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作者:

Zhao, Jingteng (Zhao, Jingteng.) | Liang, Yuan (Liang, Yuan.) | Zhang, Xu (Zhang, Xu.) | Zhang, Zihe (Zhang, Zihe.) | Wang, Errui (Wang, Errui.) | He, Shiman (He, Shiman.) | Wang, Boya (Wang, Boya.) | Han, Zhijie (Han, Zhijie.) | Lu, Jun (Lu, Jun.) | Amine, Khalil (Amine, Khalil.) | Yu, Haijun (Yu, Haijun.) (学者:尉海军)

收录:

EI Scopus SCIE

摘要:

High-energy-density Li-rich layered oxides (LLOs) as promising cathodes for Li-ion batteries suffer from the dissolution of transition metals (especially manganese) and severe side reactions in conventional electrolytes, which greatly deteriorate their electrochemical performance. Herein, an in situ "anchoring + pouring" synergistic cathode-electrolyte interphase (CEI) construction is realized by using 1,3,6-hexanetricarbonitrile (HTCN) and tris(trimethylsilyl) phosphate (TMSP) electrolyte additives to alleviate the challenges of an LLO (Li1.13Mn0.517Ni0.256Co0.097O2). HTCN with three nitrile groups can tightly anchor transition metals by coordinative interaction to form the CEI framework, and TMSP will electrochemically decompose to reshape the CEI layer. The uniform and robust in situ constructed CEI layer can suppress the transition metal dissolution, shield the cathode against diverse side reactions, and significantly improve the overall electrochemical performance of the cathod with a discharge voltage decay of only 0.5 mV cycle(-1). Further investigations based on a series of experimental techniques and theoretical calculations have revealed the composition of in situ constructed CEI layers and their distribution, including the enhanced HTCN anchoring effect after lattice densification of LLOs. This study provides insights into the in situ CEI construction for enhancing the performance of high-energy and high-voltage cathode materials through effective, convenient, and economical electrolyte approaches.

关键词:

in situ construction voltage decay ion batteries rich layered oxides electrolyte interphase cathode&#8211 Li&#8208 lithium&#8208

作者机构:

  • [ 1 ] [Zhao, Jingteng]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 2 ] [Liang, Yuan]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 3 ] [Zhang, Xu]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 4 ] [Zhang, Zihe]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 5 ] [Wang, Errui]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 6 ] [He, Shiman]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 7 ] [Wang, Boya]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 8 ] [Han, Zhijie]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 9 ] [Yu, Haijun]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 10 ] [Lu, Jun]Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA
  • [ 11 ] [Amine, Khalil]Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA
  • [ 12 ] [Amine, Khalil]Stanford Univ, Mat Sci & Engn, Stanford, CA 94305 USA
  • [ 13 ] [Amine, Khalil]Imam Abdulrahman Bin Faisal Univ, Inst Res & Med Consultat, Dammam 34212, Saudi Arabia

通讯作者信息:

  • 尉海军

    [Yu, Haijun]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China;;[Amine, Khalil]Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA;;[Amine, Khalil]Stanford Univ, Mat Sci & Engn, Stanford, CA 94305 USA;;[Amine, Khalil]Imam Abdulrahman Bin Faisal Univ, Inst Res & Med Consultat, Dammam 34212, Saudi Arabia

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来源 :

ADVANCED FUNCTIONAL MATERIALS

ISSN: 1616-301X

年份: 2020

期: 8

卷: 31

1 9 . 0 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:169

被引次数:

WoS核心集被引频次: 122

SCOPUS被引频次:

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

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