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作者:

Zu, Guannan (Zu, Guannan.) | Yang, Yunfei (Yang, Yunfei.) | Li, Hongyi (Li, Hongyi.) (学者:李洪义) | Wang, Juan (Wang, Juan.) | Fu, Yonghong (Fu, Yonghong.) | Wang, Xinxin (Wang, Xinxin.) | Zhou, Wenyuan (Zhou, Wenyuan.) | Wang, Jinshu (Wang, Jinshu.)

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EI Scopus SCIE

摘要:

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.

关键词:

lithium-ion batteries Stable cycling Compactness design Film-type anodes 2H phase molybdenum disulfide

作者机构:

  • [ 1 ] [Zu, Guannan]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat Educ Minist China, Beijing 100124, Peoples R China
  • [ 2 ] [Yang, Yunfei]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat Educ Minist China, Beijing 100124, Peoples R China
  • [ 3 ] [Li, Hongyi]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat Educ Minist China, Beijing 100124, Peoples R China
  • [ 4 ] [Wang, Xinxin]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat Educ Minist China, Beijing 100124, Peoples R China
  • [ 5 ] [Zhou, Wenyuan]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat Educ Minist China, Beijing 100124, Peoples R China
  • [ 6 ] [Wang, Jinshu]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat Educ Minist China, Beijing 100124, Peoples R China
  • [ 7 ] [Zu, Guannan]Xian Univ Architecture & Technol, Sch Mech & Elect Engn, Xian Key Lab Clean Energy, Shaanxi Key Lab Nanomat & Nanotechnol, Xian 710055, Peoples R China
  • [ 8 ] [Wang, Juan]Xian Univ Architecture & Technol, Sch Mech & Elect Engn, Xian Key Lab Clean Energy, Shaanxi Key Lab Nanomat & Nanotechnol, Xian 710055, Peoples R China
  • [ 9 ] [Fu, Yonghong]Xian Univ Architecture & Technol, Sch Mech & Elect Engn, Xian Key Lab Clean Energy, Shaanxi Key Lab Nanomat & Nanotechnol, Xian 710055, Peoples R China

通讯作者信息:

  • [Li, Hongyi]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat Educ Minist China, Beijing 100124, Peoples R China;;[Wang, Jinshu]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat Educ Minist China, Beijing 100124, Peoples R China;;

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来源 :

MATERIALS CHARACTERIZATION

ISSN: 1044-5803

年份: 2022

卷: 196

4 . 7

JCR@2022

4 . 7 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:66

JCR分区:1

中科院分区:1

被引次数:

WoS核心集被引频次: 4

SCOPUS被引频次: 5

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 7

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