Construction of Multifunctional Conductive Carbon-Based Cathode Additives for Boosting Li_(6)PS_(5)Cl-Based All-Solid-State Lithium Batteries  

作　　者：Xin Gao Ya Chen Zheng Zhen Lifeng Cui Ling Huang Xiao Chen Jiayi Chen Xiaodong Chen Duu-Jong Lee Guoxiu Wang 

机构地区：[1]College of Smart Energy,Shanghai Jiao Tong University,Shanghai 200240,People’s Republic of China [2]Smart Materials for Architecture Research Lab,Innovation Center of Yangtze River Delta,Zhejiang University,Jiashan 314100,People’s Republic of China [3]Department of Mechanical Engineering,City University of Hong Kong,Tat Chee Avenue,Kowloon 999077,People’s Republic of China [4]Centre for Clean Energy Technology,School of Mathematical and Physical Science,Faculty of Science,University of Technology Sydney,Sydney 2007,Australia [5]School of Physical Science and Technology,Shanghai Tech University,Shanghai 201210,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第6期332-348,共17页纳微快报(英文版)

基　　金：support provided by the National Natural Science Foundation of China(Grant No.21804008,52102209);the International Technological Collaboration Project of Shanghai(Grant No.17520710300).

摘　　要：The electrochemical performance of all-solid-state lithium batteries(ASSLBs)can be prominently enhanced by minimizing the detrimental degradation of solid electrolytes through their undesirable side reactions with the conductive carbon additives(CCAs)inside the composite cathodes.Herein,the well-defined Mo_(3)Ni_(3)N nanosheets embedded onto the N-doped porous carbons(NPCs)substrate are successfully synthesized(Mo-Ni@NPCs)as CCAs inside LiCoO_(2)for Li_(6)PSC_5)Cl(LPSCl)-based ASSLBs.This nano-composite not only makes it difficult for hydroxide groups(-OH)to survive on the surface but also allows the in situ surface reconstruction to generate the ultra-stable MoS_(2)-Mo_(3)Ni_(3)N heterostructures after the initial cycling stage.These can effectively prevent the occurrence of OH-induced LPSC decomposition reaction from producing harmful insulating sulfates,as well as simultaneously constructing the highly-efficient electrons/ions dual-migration pathways at the cathode interfaces to facilitate the improvement of both electrons and Li+ions conductivities in ASSLBs.With this approach,fine-tuned Mo-Ni@NPCs can deliver extremely outstanding performance,including an ultra-high first discharge-specific capacity of 148.61 mAh g^(-1)(0.1C),a high Coulombic efficiency(94.01%),and a capacity retention rate after 1000 cycles still attain as high as 90.62%.This work provides a brand-new approach of“conversionprotection”strategy to overcome the drawbacks of composite cathodes interfaces instability and further promotes the commercialization of ASSLBs.

关 键 词：Multifunctional conductive-carbon additives Mo-Ni@NPCs Sulfide solid electrolytes Cathodes interfaces stabilities All-solid-state lithium batteries 

分 类 号：TM9[电气工程—电力电子与电力传动]