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学者姓名：尉海军
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摘要 ：
Aluminium-sulfur (Al-S) batteries possess high research merits and application prospects owing to their high theoretical energy density, high safety and low cost. However, the deficiency of outstanding cathodes severely limits their electrochemical performance. Herein, a N-doped hierarchical porous carbon material with a surface area of 2513 m(2) g(-1) has been developed by a soft-template method. The hierarchical pores can provide effective electrolyte transport channels and stably accommodate S nanoparticles, while the N-doped carbon can facilitate charge transfer and anchor aluminium sulfides to improve the electrochemical stability of the cathode. Coupling the S composite cathode with a low-cost AlCl3/acetamide electrolyte, the Al-S battery can deliver a capacity above 1027 mA h g(-1) at 0.2 A g(-1) for 50 cycles and an excellent cyclability above 483/405 mA h g(-1) at 1 A g(-1) for 500/700 cycles. In situ Raman spectroscopy and ex situ solid-state nuclear magnetic resonance have been used to monitor the reversible reactions of S and identify the configuration of sulfides, showing that alpha-type Al2S3 with a tetra-coordinated configuration is the dominant final discharge product. This work sheds light on the design of S composite cathodes and understanding of reaction mechanisms for the fabrication of high-reversibility, high-capacity and low-cost Al-S batteries.
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| GB/T 7714 | Zhang, Dian , Zhang, Xu , Wang, Boya et al. Highly reversible aluminium-sulfur batteries obtained through effective sulfur confinement with hierarchical porous carbon dagger [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2021 , 9 (14) : 8966-8974 . |
| MLA | Zhang, Dian et al. "Highly reversible aluminium-sulfur batteries obtained through effective sulfur confinement with hierarchical porous carbon dagger" . | JOURNAL OF MATERIALS CHEMISTRY A 9 . 14 (2021) : 8966-8974 . |
| APA | Zhang, Dian , Zhang, Xu , Wang, Boya , He, Shiman , Liu, Shiqi , Tang, Mingxue et al. Highly reversible aluminium-sulfur batteries obtained through effective sulfur confinement with hierarchical porous carbon dagger . | JOURNAL OF MATERIALS CHEMISTRY A , 2021 , 9 (14) , 8966-8974 . |
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| GB/T 7714 | Liu, Shiqi , Yu, Haijun . Toward functional units constructing Mn-based oxide cathodes for rechargeable batteries [J]. | SCIENCE BULLETIN , 2021 , 66 (13) : 1260-1262 . |
| MLA | Liu, Shiqi et al. "Toward functional units constructing Mn-based oxide cathodes for rechargeable batteries" . | SCIENCE BULLETIN 66 . 13 (2021) : 1260-1262 . |
| APA | Liu, Shiqi , Yu, Haijun . Toward functional units constructing Mn-based oxide cathodes for rechargeable batteries . | SCIENCE BULLETIN , 2021 , 66 (13) , 1260-1262 . |
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摘要 ：
电动汽车续航里程的提升主要依赖于锂离子电池的能量密度,其中发展高容量的正极材料成为关键。富锂锰基层状氧化物(LLOs)和高镍三元层状氧化物(NCM,Ni≥80%)等高容量正极材料成为了研究热点,其前体的开发对正极材料电化学性能的发挥有重要的影响。本文从工业化的角度对共沉淀法制备LLOs和NCM正极材料前体的反应过程和影响因素进行了介绍,分析了球形团聚体、单晶和浓度梯度等正极材料的结构和性能,并详细阐述了正极材料中晶面取向调控、掺杂及表界面处理等改性策略的原理及优缺点。文章指出,综合来看单晶材料表现出较好的循环稳定性和热稳定性,但倍率性能有待进一步提升。浓度梯度正极材料不仅保持了高容量特性,还兼...
关键词 ：
共沉淀 共沉淀 前体 前体 锂离子电池 锂离子电池 高容量正极材料 高容量正极材料
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| GB/T 7714 | 王策 , 王国庆 , 王二锐 et al. 锂离子电池正极材料合成及改性 [J]. | 化工进展 , 2021 , 40 (09) : 4998-5011 . |
| MLA | 王策 et al. "锂离子电池正极材料合成及改性" . | 化工进展 40 . 09 (2021) : 4998-5011 . |
| APA | 王策 , 王国庆 , 王二锐 , 吴天昊 , 尉海军 . 锂离子电池正极材料合成及改性 . | 化工进展 , 2021 , 40 (09) , 4998-5011 . |
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摘要 ：
锂离子电池高电压正极材料高浓度电解液，属于电化学储能技术领域。该电解液含有锂盐、溶剂及添加剂，锂盐浓度范围在1.0‑5.0mol/L，优选1.2‑5.0mol/L。本发明的电解液可应用在锂离子电池、锂金属电池等领域，可以显著提升电解液的电化学稳定窗口，抑制过渡金属的溶出，组装成的锂离子电池首圈库伦效率高、容量高、循环稳定性好。
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| GB/T 7714 | 尉海军 , 韩志杰 , 梁媛 et al. 锂离子电池高电压正极材料高浓度电解液 : CN202110058937.4[P]. | 2021-01-17 . |
| MLA | 尉海军 et al. "锂离子电池高电压正极材料高浓度电解液" : CN202110058937.4. | 2021-01-17 . |
| APA | 尉海军 , 韩志杰 , 梁媛 , 赵景腾 , 郭现伟 , 张旭 . 锂离子电池高电压正极材料高浓度电解液 : CN202110058937.4. | 2021-01-17 . |
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摘要 ：
Lithium-ion batteries (LIBs) are considered to be indispensable in modern society. Major advances in LIBs depend on the development of new high-performance electrode materials, which requires a fundamental understanding of their properties. First-principles calculations have become a powerful technique in developing new electrode materials for high-energy-density LIBs in terms of predicting and interpreting the characteristics and behaviors of electrode materials, understanding the charge/discharge mechanisms at the atomic scale, delivering rational design strategies for electrode materials, etc. In this review, we present an overview of first-principles calculation methods and highlight their valuable role in contemporary research on LIB cathode materials. This overview focuses on three LIB cathode scenarios, which are divided by their cationic/anionic redox mechanisms. Then, representative examples of rational cathode design based on theoretical predictions are presented. Finally, we present a personal perspective on the current challenges and future directions of first-principles calculations in LIBs.
关键词 ：
Anionic redox Anionic redox Cathode materials Cathode materials Cationic redox Cationic redox First-principles calculations First-principles calculations Lithium-ion batteries Lithium-ion batteries
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| GB/T 7714 | Zhao, Shu , Wang, Boya , Zhang, Zihe et al. First-principles computational insights into lithium battery cathode materials [J]. | ELECTROCHEMICAL ENERGY REVIEWS , 2021 . |
| MLA | Zhao, Shu et al. "First-principles computational insights into lithium battery cathode materials" . | ELECTROCHEMICAL ENERGY REVIEWS (2021) . |
| APA | Zhao, Shu , Wang, Boya , Zhang, Zihe , Zhang, Xu , He, Shiman , Yu, Haijun . First-principles computational insights into lithium battery cathode materials . | ELECTROCHEMICAL ENERGY REVIEWS , 2021 . |
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摘要 ：
To boost the use of electronic devices and driving mileage of electric vehicles, it is urgent to develop lithium-ion batteries (LIBs) with higher energy density and longer life. High-voltage and high-capacity cathode materials, such as LiCoO2, LiNi0.5Mn1.5O4, Ni-rich layered oxides, and lithium-rich layered oxides, are critically important for LIBs to obtain high energy density. Among various forms of these materials, 'single-crystal'cathodes (SCCs) have shown many advantages over other forms for industrial applications, including good crystallinity, high mechanical strength, high reaction homogeneity, small specific surface area, excellent structural stability, and high thermal stability, which can noticeably improve the cycling performance and safety of SCC-based batteries. Therefore, SCCs have received wide attention from academic to industrial communities and have been applied to the liquid-based and solid-state batteries in recent years. In this paper, the advantages, progress, and challenges of SCCs for high-voltage cathode materials are reviewed. Moreover, we summarize the efforts for improving the electrochemical performance of SCCs, intending to provide insights into the development of high-performance cathodes for practical LIBs. © 2021 American Chemical Society. All rights reserved.
关键词 ：
Accident prevention Accident prevention Cathode materials Cathode materials Cathodes Cathodes Crystallinity Crystallinity Lithium compounds Lithium compounds Lithium-ion batteries Lithium-ion batteries Nickel oxide Nickel oxide Single crystals Single crystals Solid-State Batteries Solid-State Batteries Solid state devices Solid state devices Stability Stability
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| GB/T 7714 | Wang, Yinzhong , Wang, Errui , Zhang, Xu et al. High-Voltage 'single-Crystal' Cathode Materials for Lithium-Ion Batteries [J]. | Energy and Fuels , 2021 , 35 (3) : 1918-1932 . |
| MLA | Wang, Yinzhong et al. "High-Voltage 'single-Crystal' Cathode Materials for Lithium-Ion Batteries" . | Energy and Fuels 35 . 3 (2021) : 1918-1932 . |
| APA | Wang, Yinzhong , Wang, Errui , Zhang, Xu , Yu, Haijun . High-Voltage 'single-Crystal' Cathode Materials for Lithium-Ion Batteries . | Energy and Fuels , 2021 , 35 (3) , 1918-1932 . |
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摘要 ：
In the past several decades, the research communities have witnessed the explosive development of lithium-ion batteries, largely based on the diverse landmark cathode materials, among which the application of manganese has been intensively considered due to the economic rationale and impressive properties. Lithium-manganese-based layered oxides (LMLOs) are one of the most promising cathode material families based on an overall theoretical evaluation covering the energy density, cost, eco-friendship, etc. Unfortunately, the Mn3+ cation introduces severe Jahn–Teller (J–T) effect, which profoundly distorts the localized lattice structure and reduces the electrochemical stability. This perspective presents the principal comprehensions of the J–T effect in LMLOs and offers an outline picture of material design to suppress it. We outline the history of material design and further assess available approaches to address the J–T effect. Finally, we tentatively propose promising design trends with eliminated J–T effect to revive this important cathode material family toward practical applications. © 2021 Elsevier Inc.
关键词 ：
Cathode materials Cathode materials Cathodes Cathodes Lithium compounds Lithium compounds Lithium-ion batteries Lithium-ion batteries
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| GB/T 7714 | Liu, Shiqi , Wang, Boya , Zhang, Xu et al. Reviving the lithium-manganese-based layered oxide cathodes for lithium-ion batteries [J]. | Matter , 2021 , 4 (5) : 1511-1527 . |
| MLA | Liu, Shiqi et al. "Reviving the lithium-manganese-based layered oxide cathodes for lithium-ion batteries" . | Matter 4 . 5 (2021) : 1511-1527 . |
| APA | Liu, Shiqi , Wang, Boya , Zhang, Xu , Zhao, Shu , Zhang, Zihe , Yu, Haijun . Reviving the lithium-manganese-based layered oxide cathodes for lithium-ion batteries . | Matter , 2021 , 4 (5) , 1511-1527 . |
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摘要 ：
The rapidly growing electric vehicle market as well as large-scale electric grid application harshly enforces the progress of high-energy Li-ion batteries (LIBs), and arouses the urgent renovation of high-capacity cathode materials. To this end, oxygen anionic redox (OAR), the electrochemical conversions between different oxygen states in oxides to compensate charges during the extraction/insertion process of alkali metal ions, has served as a new design paradigm to produce "extra" capacities for cathodes. By balancing the metal cationic redox (MCR) and OAR, a variety of high-energy cathodes, especially Li-rich layered oxides (LLOs), have been developed and extensively studied on issues such as material design, reaction mechanism, and performance enhancement, making LLOs one of the most appealing candidates for practical high-energy LIBs in the near future. On the other hand, the employment of pure OAR triggers the emerging lithia-based sealed batteries with great long-term potentials, although diverse fundamental issues require urgent elucidation. This review paper provides an overview of OAR and OAR-activated cathodes ranging from transition metal oxides to lithia-based composites, followed by a personnel perspective with a hope to promote the development of high-energy cathodes for more advanced batteries. (C) 2021 Elsevier B.V. All rights reserved.
关键词 ：
Cathode materials Cathode materials Lithia-based composites Lithia-based composites Lithium-ion batteries Lithium-ion batteries Lithium-rich layered oxides Lithium-rich layered oxides Metal cationic redox Metal cationic redox Oxygen anionic redox Oxygen anionic redox
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| GB/T 7714 | Zhang, Xu , Wang, Boya , Zhao, Shu et al. Oxygen anionic redox activated high-energy cathodes: Status and prospects [J]. | ETRANSPORTATION , 2021 , 8 . |
| MLA | Zhang, Xu et al. "Oxygen anionic redox activated high-energy cathodes: Status and prospects" . | ETRANSPORTATION 8 (2021) . |
| APA | Zhang, Xu , Wang, Boya , Zhao, Shu , Li, Hong , Yu, Haijun . Oxygen anionic redox activated high-energy cathodes: Status and prospects . | ETRANSPORTATION , 2021 , 8 . |
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摘要 ：
Layered transition-metal oxides have attracted intensive interest for cathode materials of sodium-ion batteries. However, they are hindered by the limited capacity and inferior phase transition due to the gliding of transition-metal layers upon Na+ extraction and insertion in the cathode materials. Here, we report that the large-sized K+ is riveted in the prismatic Na+ sites of P2-Na0.612K0.056MnO2 to enable more thermodynamically favorable Na+ vacancies. The Mn-O bonds are reinforced to reduce phase transition during charge and discharge. 0.901 Na+ per formula are reversibly extracted and inserted, in which only the two-phase transition of P2 ↔ P'2 occurs at low voltages. It exhibits the highest specific capacity of 240.5 mAh g-1 and energy density of 654 Wh kg-1 based on the redox of Mn3+/Mn4+, and a capacity retention of 98.2% after 100 cycles. This investigation will shed lights on the tuneable chemical environments of transition-metal oxides for advanced cathode materials and promote the development of sodium-ion batteries.
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| GB/T 7714 | Wang Chenchen , Liu Luojia , Zhao Shuo et al. Tuning local chemistry of P2 layered-oxide cathode for high energy and long cycles of sodium-ion battery. [J]. | Nature communications , 2021 , 12 (1) : 2256 . |
| MLA | Wang Chenchen et al. "Tuning local chemistry of P2 layered-oxide cathode for high energy and long cycles of sodium-ion battery." . | Nature communications 12 . 1 (2021) : 2256 . |
| APA | Wang Chenchen , Liu Luojia , Zhao Shuo , Liu Yanchen , Yang Yubo , Yu Haijun et al. Tuning local chemistry of P2 layered-oxide cathode for high energy and long cycles of sodium-ion battery. . | Nature communications , 2021 , 12 (1) , 2256 . |
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摘要 ：
Lithium-rich layered oxides (LLOs) are fascinating high-energy-density cathode materials for next-generation lithium-ion batteries (LIBs). However, the high voltage causes severe decomposition of conventional carbonate-based electrolytes at LLOs' surfaces, often producing a non-uniform, unstable, and non-protective cathode-electrolyte interphase (CEI), hindering the Li+ diffusion and reducing the electrochemical efficiency. Various side reactions, such as the release of lattice oxygen, dissolution of transition metals (especially manganese), and irreversible structural transformations, also occur and severely attenuate the electrochemical performance. Electrolyte additives provide a facile and effective approach to optimize the battery performance by in situ regulating the physical/chemical structures/properties of CEI. This paper reviews the research progress in functional electrolyte additives for LLOs and discusses the mechanisms of CEI construction with diverse functions. Finally, we tentatively propose suggestions to construct CEI by screening and customizing electrolyte additives to promote the large-scale application of LLOs for LIBs.
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| GB/T 7714 | Zhao, Jingteng , Zhang, Xu , Liang, Yuan et al. Interphase Engineering by Electrolyte Additives for Lithium-Rich Layered Oxides: Advances and Perspectives [J]. | ACS ENERGY LETTERS , 2021 , 6 (7) : 2552-2564 . |
| MLA | Zhao, Jingteng et al. "Interphase Engineering by Electrolyte Additives for Lithium-Rich Layered Oxides: Advances and Perspectives" . | ACS ENERGY LETTERS 6 . 7 (2021) : 2552-2564 . |
| APA | Zhao, Jingteng , Zhang, Xu , Liang, Yuan , Han, Zhijie , Liu, Shiqi , Chu, Weiqin et al. Interphase Engineering by Electrolyte Additives for Lithium-Rich Layered Oxides: Advances and Perspectives . | ACS ENERGY LETTERS , 2021 , 6 (7) , 2552-2564 . |
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