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学者姓名：李洪义
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Abstract ：
In order to enhance the conductivity and catalytic efficiency of non-noble electrocatalyst, an electrocatalysts consisting of ZnCo metallic double oxide with S doping embedded on V2C MXene for oxygen evolution reaction (OER) is synthesized. Cobalt serves as the primary active site, while zinc contributes to improve conductivity owing to its high electronegativity. Sulfur doping plays a crucial role in reducing the energy barrier of rate determining step of OER. The V2C MXene as a substrate can promote conductivity as well, resulting in synergistic effect. The electrocatalyst exhibits a low overpotential of 240 mV at 10 mA cm(-2) in alkaline electrolyte, surpassing that of IrO2 commercial electrocatalyst. The potential shows only a minimal similar to 5 mV day after 72-h stability test at 20 mA cm(-2). The current density at 1.6 V vs RHE is 2 times that of commercial IrO2. Both theoretical calculation and experimental result demonstrate the advantage brought by the incorporation of zinc and sulfur. This work introduces a new idea of synergetic effect in non-noble metallic electrocatalysis.
Keyword ：
V- 2 C MXene V- 2 C MXene Sulfur doping Sulfur doping Non -noble metal Non -noble metal Oxygen evolution reaction Oxygen evolution reaction Synergetic effect Synergetic effect
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| GB/T 7714 | Yang, Zicong , Chen, Yanhui , Chang, Yukun et al. Synergetic effect of both cation and anion doping cobalt oxides on V2C MXene boosting oxygen evolution reaction [J]. | JOURNAL OF POWER SOURCES , 2024 , 604 . |
| MLA | Yang, Zicong et al. "Synergetic effect of both cation and anion doping cobalt oxides on V2C MXene boosting oxygen evolution reaction" . | JOURNAL OF POWER SOURCES 604 (2024) . |
| APA | Yang, Zicong , Chen, Yanhui , Chang, Yukun , Song, Xiangxian , Wang, Jinshu , Li, Hongyi . Synergetic effect of both cation and anion doping cobalt oxides on V2C MXene boosting oxygen evolution reaction . | JOURNAL OF POWER SOURCES , 2024 , 604 . |
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Abstract ：
Designing low-cost catalysts that offer both high mass activity and high cycling stability is crucial. Herein, a binder -free 3D self-supporting electrode composed of carbo-nitride tungsten supporting Pt nanoparticles (Pt@3DP-WN x C 1- x /W) has been successfully synthesized for hydrogen evolution reaction in acid electrolyte. The tungsten carbo-nitride synthesized via a one-step heat treatment exhibits enhanced conductivity as a result of the carbonization process and optimizes the adsorption and desorption properties of WC towards H atoms through the incorporation of N atoms, thereby achieving an effective balance. Simultaneously, the N -Pt bond enhances electron transfer efficiency. This electrode exhibits outstanding electrochemical performance with a 219 mV overpotential at a current density of -300 mA cm - 2 . Its current density and mass activity is up to 75 mA cm -2 and 7.5 A & sdot;mg Pt- 1 at an overpotential of 100 mV, respectively, which are both 2.6 times higher than those of the 40% Pt/C electrode. In addition, it reveals a low Tafel slope of 38.3 mV dec - 1 indicating rapid kinetics. Furthermore, the electrocatalyst shows only 3 mV day at -100 mA cm -2 after 10,000 cycles. Both theoretical calculation and experimental results show the promotion of catalytic efficiency of Pt@3DP-WN x C 1-x /W brought by carbo-nitrition. This study offers a novel, efficient, and stable electrode design strategy.
Keyword ：
Hydrogen evolution reaction Hydrogen evolution reaction Tungsten Tungsten Self-supporting Self-supporting Electrodeposition Electrodeposition Carbonitriding Carbonitriding
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| GB/T 7714 | Song, Xiangxian , Yang, Zicong , Wu, Yahang et al. Porous tungsten carbo-nitride supported Pt nanoparticles with high conductivity for efficient and stable hydrogen evolution reaction [J]. | JOURNAL OF POWER SOURCES , 2024 , 604 . |
| MLA | Song, Xiangxian et al. "Porous tungsten carbo-nitride supported Pt nanoparticles with high conductivity for efficient and stable hydrogen evolution reaction" . | JOURNAL OF POWER SOURCES 604 (2024) . |
| APA | Song, Xiangxian , Yang, Zicong , Wu, Yahang , Chang, Yukun , Song, Hui , Zhou, Wenyuan et al. Porous tungsten carbo-nitride supported Pt nanoparticles with high conductivity for efficient and stable hydrogen evolution reaction . | JOURNAL OF POWER SOURCES , 2024 , 604 . |
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Abstract ：
The electrolysis of water requires excess energy in the form of overpotential to overcome activation barriers due to the sluggish kinetics of both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). As an inexpensive bifunctional catalyst with noble-metal-like electrocatalytic properties, two-dimensional layered double hydroxides (LDHs) have received considerable attention. Here, a simple electrodeposition method is proposed to synthesize a La-doped NiFe LDH (NiFeLa LDH) on a nickel foam. NiFeLa LDH exhibits excellent water splitting performance due to the synergistic effect of La and laminate metal, with the best overpotential of 399 mV for OER and 223 mV for HER at a current density of 50 mA cm(-2), along with excellent durability in alkaline solution tests for 24 h. The electrochemical performance analysis and other characterization results confirm that La doping can change the electronic structure of LDH laminates. According to density functional theory calculations, the remarkably enhanced catalytic performance of NiFeLa LDH is ascribed to the decrease in the activation energy of adsorbed oxygen due to the adsorption of hydroxide, making the transformation from *OH to *O the rate-determining step of the OER process with a four-electron mechanism. Additionally, the electrolyzer with NiFeLa LDH as both anode and cathode provides good stability as well as a reduced cell voltage of 1.921 V to provide a current density of 50 mA cm(-2). Overall, this study offers a simple, convenient, rapid, and environmentally friendly method for fabricating high-performance water splitting catalysts.
Keyword ：
electrodeposition electrodeposition transition-metalhydroxides transition-metalhydroxides overall watersplitting overall watersplitting La-doped LDH La-doped LDH bifunctional electrocatalyst bifunctional electrocatalyst
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| GB/T 7714 | Xu, Rou , Wang, Xinxin , Yang, Zicong et al. Electrodeposition Fabrication of La-Doped NiFe Layered Double Hydroxide to Improve Conductivity for Efficient Overall Water Splitting [J]. | ACS APPLIED ENERGY MATERIALS , 2024 , 7 (9) : 3866-3875 . |
| MLA | Xu, Rou et al. "Electrodeposition Fabrication of La-Doped NiFe Layered Double Hydroxide to Improve Conductivity for Efficient Overall Water Splitting" . | ACS APPLIED ENERGY MATERIALS 7 . 9 (2024) : 3866-3875 . |
| APA | Xu, Rou , Wang, Xinxin , Yang, Zicong , Chang, Yukun , Chen, Xiaowen , Wang, Jinshu et al. Electrodeposition Fabrication of La-Doped NiFe Layered Double Hydroxide to Improve Conductivity for Efficient Overall Water Splitting . | ACS APPLIED ENERGY MATERIALS , 2024 , 7 (9) , 3866-3875 . |
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Abstract ：
To reduce platinum usage, ultrathin MXene sheets with little restacking effect were prepared. The ultrathin MXene was prepared by a two-step etching process, which showed high specific surface area with low charge transfer resistance. The sample showed a double layer capacity of 64.98 mF cm(-2), which is 14 times as large as that of ordinary HF prepared MXene, indicating a larger electrochemically active surface area. It showed a much better HER performance of similar to 190 mV at 10 mA cm(-2). The better performance attributes to 0.4 wt% Pt loaded. The Pt loaded MXene exhibited a better HER performance of similar to 75 mV at 10 mA cm(-2) and a Tafel slope of 61.7 mV center dot dec(-1) close to 40 wt% commercial Pt/C. The sample performed better than Pt/C in a 3 h chronopotentiometry test and hardly changed in ECSA after the cyclic experiment. With more Pt loading, the sample delivered better HER performance than Pt/C in the LSV test (similar to 51 mV at 10 mA cm(-2)). This work provides an effective route for the preparation of ultrathin MXene sheets with larger electrochemically active area and more active sites for Pt loading, leading to superior HER performance.
Keyword ：
Hydrogen evolution reaction Hydrogen evolution reaction Electrochemically active area Electrochemically active area Little restacking Little restacking Ultrathin MXene Ultrathin MXene
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| GB/T 7714 | Yang, Zicong , Chen, Yanhui , Chen, Ge et al. Ultrathin Ti3C2Tx MXene sheets with high electrochemically active area anchored Pt boosting hydrogen evolution [J]. | HELIYON , 2023 , 9 (9) . |
| MLA | Yang, Zicong et al. "Ultrathin Ti3C2Tx MXene sheets with high electrochemically active area anchored Pt boosting hydrogen evolution" . | HELIYON 9 . 9 (2023) . |
| APA | Yang, Zicong , Chen, Yanhui , Chen, Ge , Wang, Jinshu , Li, Hongyi . Ultrathin Ti3C2Tx MXene sheets with high electrochemically active area anchored Pt boosting hydrogen evolution . | HELIYON , 2023 , 9 (9) . |
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Abstract ：
Designing highly efficient and durable electrode for methanol oxidation reaction (MOR) is crucial to commercializing direct methanol fuel cells (DMFCs). However, traditional Pt/C catalysts usually suffer from CO poisoning, and agglomeration of powder catalyst, which leads to rapid activity degradation. Herein, we have successfully fabricated self-supported Pt3Cu@3DP-WO3/W electrode via a facile and effective synthesis approach by combining anodic oxidation and electrodeposition method. Benefitting from the three dimensional nanoporous of WO3 with more surface area and strong adhesion, and Pt3Cu alloy synergism induced the lattice compressive strain, the Pt3Cu@3DP-WO3/W electrode achieved 2.77-fold and 4.8-fold enhancement in specific activity (2.15 mA cm-2) and mass activity (853 mA$mgPt-1) for MOR relative to Pt/C catalysts, respectively. Moreover, both the experiments and theoretical calculations revealed that the doping of Cu element weakened the chemisorption of CO-like intermediates by lowering the Pt d-band center through compressive lattice strain, which resulting in excellent catalytic stability. This binder-free self-supported electrode is a viable alternative for commercial application of DMFCs.(c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Keyword ：
Lattice compression strain Lattice compression strain Platinum-copper alloy Platinum-copper alloy Cyclic voltammetry co-deposition Cyclic voltammetry co-deposition Methanol oxidation reaction Methanol oxidation reaction Self-supported electrode Self-supported electrode
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| GB/T 7714 | Chen, Yanhui , Wu, Yahang , Chang, Yukun et al. Pt3Cu alloy anchored on nanoporous WO3 with high activity and stability in methanol oxidation [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2023 , 50 : 1441-1449 . |
| MLA | Chen, Yanhui et al. "Pt3Cu alloy anchored on nanoporous WO3 with high activity and stability in methanol oxidation" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 50 (2023) : 1441-1449 . |
| APA | Chen, Yanhui , Wu, Yahang , Chang, Yukun , Yang, Zicong , Song, Xiangxian , Zhou, Wenyuan et al. Pt3Cu alloy anchored on nanoporous WO3 with high activity and stability in methanol oxidation . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2023 , 50 , 1441-1449 . |
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Abstract ：
Highly active, stable, economic friendly electrocatalysts play a crucial role for the commercialization of direct methanol fuel cells (DMFCs). One kind of flower-like PtNi bimetallic particle anchored on TiO2 na-notube arrays (PtNi/TNTs/Ti) had been synthesized by one-step electrochemical synthesis as anode catalysts for methanol oxidation reaction (MOR) in this study. The PtNi/TNTs/Ti electrode demonstrated high elec-trocatalytic activity and durability significantly for MOR. In addition, PtNi100/TNTs/Ti possessed a mass activity of 409.8 mA/mgpt, which was four times greater than that of Pt100/TNTs/Ti electrodes. According to further structure analysis, the improvement in catalytic activity was attributed to lattice compression when Ni atoms entered the Pt lattice accompanied by a 1.02 eV positive shift in Pt 4 f7/2 binding energy, and density functional theory (DFT) calculations indicated that the remarkably enhanced catalytic performance on PtNi through lattice compression arising from the enhanced OH adsorption. It appears promising that this simple method could be adopted to prepare an integrated electrode used as energy and environmental applications. (c) 2023 Published by Elsevier B.V.
Keyword ：
TiO2 nanotubes TiO2 nanotubes PtNi bimetallic catalyst PtNi bimetallic catalyst Methanol oxidation reaction Methanol oxidation reaction Lattice compression Lattice compression
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| GB/T 7714 | Chang, Yukun , Chen, Yanhui , Wu, Yahang et al. One-step synthesis of PtNi anchored on TiO2 nanotube arrays for methanol oxidation [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 943 . |
| MLA | Chang, Yukun et al. "One-step synthesis of PtNi anchored on TiO2 nanotube arrays for methanol oxidation" . | JOURNAL OF ALLOYS AND COMPOUNDS 943 (2023) . |
| APA | Chang, Yukun , Chen, Yanhui , Wu, Yahang , Yang, Zicong , Wang, Jinshu , Wang, Xinxin et al. One-step synthesis of PtNi anchored on TiO2 nanotube arrays for methanol oxidation . | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 943 . |
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Abstract ：
Exploring highly efficient, CO-tolerant and stability catalyst, such as Pt-based bimetallic catalyst for methanol oxidation reaction (MOR) is pressingly demanded towards commercialization of direct methanol fuel cells (DMFCs). Herein, the PtCo nanoparticles are encapsulated in bamboo-like highly ordered TiO2 nanotubes (PtCo/ TNTs/Ti) by a facile electrochemical method. The obtained PtCo/TNTs/Ti electrode exhibits a large electro-chemical active area of 1220.4 cm2/mgpt. Its mass activity reaches to 1148 mA/mgPt, which is 3.6 times and 7.5 times than that of Pt/TNTs/Ti and PtC, respectively. The lattice spacing of (111) and (200) faces are respectively reduced by 3.5% and 7.1%, caused by Co incorporated into Pt lattice. The lattice strain is an important reason for improving catalytic performance. In addition, an insight into growth mechanism is proposed according to the first-principle calculations. Co atoms that alloyed with Pt on the surface provide active sites for the following reduction of Pt, promoting the deposition efficiency. The obtained PtCo/TNTs/Ti is expected as the candidate electrode to output high power density in DMFCs.
Keyword ：
TiO2 nanotubes arrays TiO2 nanotubes arrays Lattice compression Lattice compression PtCo catalyst PtCo catalyst Growth mechanism Growth mechanism Integrated electrode Integrated electrode
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| GB/T 7714 | Chang, Yukun , Chen, Yanhui , Yang, Zicong et al. Lattice distortion of PtCo nanoparticles encapsulated in TiO2 nanotubes boosts methanol oxidation [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 968 . |
| MLA | Chang, Yukun et al. "Lattice distortion of PtCo nanoparticles encapsulated in TiO2 nanotubes boosts methanol oxidation" . | JOURNAL OF ALLOYS AND COMPOUNDS 968 (2023) . |
| APA | Chang, Yukun , Chen, Yanhui , Yang, Zicong , Wang, Jinshu , Li, Hongyi . Lattice distortion of PtCo nanoparticles encapsulated in TiO2 nanotubes boosts methanol oxidation . | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 968 . |
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Abstract ：
An innovative method is created for transforming iron-rich RO phase (MgO0.239FeO0.761) on steel slag surface into nanostructured Mg0.04Fe2.96O4 layer. The phase change process is investigated, and it is found that salicylic acid modification and alkaline roasting procedures remarkably increase the specific surface area from 0.46 m2/g (raw steel slag) to 69.5 m2/g (Mg0.04Fe2.96O4), and the generation of Mg0.04Fe2.96O4 enhances the absorption of visible light and Cr(VI) conversion with 2-times increasement than raw steel slag. Surface complexation between H2C2O4 ligands and Fe metal moiety on Mg0.04Fe2.96O4 induces the intramolecular electron transfer under visible light irradiation based on a ligand-to-metal charge transfer mechanism, thus resulting in Cr(VI) photoreduction, and the catalytic efficiency is above 90% for Cr(VI) (40 mg/L) under inherent pH= 5.5 conditions. Moreover, recyclability tests based on magnetic separation show that the photoreactivity is closely related to Mg content of Mg0.04Fe2.96O4 layer where Mg leaching occurs and finally generates cubic spinel configuration Fe3O4. This work highlights the importance of surface functionalization in post-use phases of steel slag in which surface reactivity and application potential can be greatly altered by chemical exposure history and surface transformations. It also provides valuable references for studying the metastable state mechanism of magnesium ferrite photocatalysts.
Keyword ：
Cr(VI) reduction Cr(VI) reduction Steel Slag Steel Slag Magnesium ferrite Magnesium ferrite
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| GB/T 7714 | Sun, Lingmin , Wu, Junshu , Wang, Jinshu et al. In-situ constructing nanostructured magnesium ferrite on steel slag for Cr (VI) photoreduction [J]. | JOURNAL OF HAZARDOUS MATERIALS , 2022 , 422 . |
| MLA | Sun, Lingmin et al. "In-situ constructing nanostructured magnesium ferrite on steel slag for Cr (VI) photoreduction" . | JOURNAL OF HAZARDOUS MATERIALS 422 (2022) . |
| APA | Sun, Lingmin , Wu, Junshu , Wang, Jinshu , Yang, Yilong , Xu, Meng , Liu, Jingchao et al. In-situ constructing nanostructured magnesium ferrite on steel slag for Cr (VI) photoreduction . | JOURNAL OF HAZARDOUS MATERIALS , 2022 , 422 . |
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Abstract ：
Wearable flexible devices require advanced lithium-ion batteries (LIBs) for energy supply, thus promotes the development of self-assembled, binder-free, film-type anodes with the advantage of no additives, strong binding force and low contact resistance. Among many potential candidates, 2H phase molybdenum disulfide (2H-MoS2) has been attracting much attention due to its high practical capacity and graphene-like structure. However, few interests are paid to the compactness design inside the in-situ grown MoS2 film on bendable matrices, leading to poor structure stability and low volumetric capacity. Herein, film compactness is carefully modulated by controlling the sputtering parameters, then the cross-section microstructure and electrochemical property are systematically investigated. Among them, the dendritic-arranged, middle porosity MoS2 (MP-MoS2) offers abundant Li-ion migration channels, delivering an enhanced charge-discharge capacity of 1136 and 1157 mAh center dot g(-1) (similar to 3.7 Ah.cm(-3)) after 300 cycles at 1C. MP-MoS2 (2 h) with the same structure and increased mass loading can also stably operate for 400 cycles without decay. Notably, it remains stable cycling on titanium and stainless-steel matrices, but the sharp decay often occurs within tens of cycles towards common copper foil due to Cu diffusion and film orientation alteration, implying that low-melting-point flexible matrices are not suitable for in-situ 2H-MoS2 assembling at high temperature. This work provides a practical analyzation strategy for designing film-type 2H-MoS2 anode material used as flexible LIBs.
Keyword ：
lithium-ion batteries lithium-ion batteries Stable cycling Stable cycling Compactness design Compactness design Film-type anodes Film-type anodes 2H phase molybdenum disulfide 2H phase molybdenum disulfide
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| GB/T 7714 | Zu, Guannan , Yang, Yunfei , Li, Hongyi et al. The compactness of 2H-MoS2 thin films determines their performance on lithium storage ability [J]. | MATERIALS CHARACTERIZATION , 2022 , 196 . |
| MLA | Zu, Guannan et al. "The compactness of 2H-MoS2 thin films determines their performance on lithium storage ability" . | MATERIALS CHARACTERIZATION 196 (2022) . |
| APA | Zu, Guannan , Yang, Yunfei , Li, Hongyi , Wang, Juan , Fu, Yonghong , Wang, Xinxin et al. The compactness of 2H-MoS2 thin films determines their performance on lithium storage ability . | MATERIALS CHARACTERIZATION , 2022 , 196 . |
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Abstract ：
一种电沉积制备钴原子诱导合金催化剂晶格畸变提升甲醇电催化性能的方法，属于光电催化技术领域。采用阳极氧化法在钛片上制备出垂直取向排列规整的竹节状二氧化钛纳米管阵列，然后采用循环伏安电沉积的方法在二氧化钛纳米管阵列中共沉积PtCo纳米合金颗粒，制备得到一种二氧化钛纳米管担载的钴原子诱导晶格畸变的合金催化剂作为甲醇燃料电池的一体式自支撑膜电极。本发明制备的电催化剂，其合成方法操作简单、反应效率高，PtCo合金纳米颗粒分散均匀、稳定性高，制备得到的电极能明显提高甲醇的电催化活性，降低催化剂的中毒性，具有广泛的应用前景。
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| GB/T 7714 | 李洪义 , 常玉昆 , 陈言慧 et al. 一种电沉积制备钴原子诱导合金催化剂晶格畸变提升甲醇电催化性能的方法 : CN202210019511.2[P]. | 2022-01-07 . |
| MLA | 李洪义 et al. "一种电沉积制备钴原子诱导合金催化剂晶格畸变提升甲醇电催化性能的方法" : CN202210019511.2. | 2022-01-07 . |
| APA | 李洪义 , 常玉昆 , 陈言慧 , 许世宇 , 吴亚航 , 王越 et al. 一种电沉积制备钴原子诱导合金催化剂晶格畸变提升甲醇电催化性能的方法 : CN202210019511.2. | 2022-01-07 . |
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