Molybdenum disulfide(MoS_(2)),a typical two-dimensional transition metallic layered material,attracts tremendous attentions in the electrochemical energy storage due to its excellent physicochemical properties.However...Molybdenum disulfide(MoS_(2)),a typical two-dimensional transition metallic layered material,attracts tremendous attentions in the electrochemical energy storage due to its excellent physicochemical properties.However,with the deepening of the research and exploration of the lithium storage mechanism of these advanced MoS_(2)-based anode materials,the complex reaction process influenced by internal and external factors hinders the exhaustive understanding of the lithium storage process.To design stable anode material with high performance,it is urgent to review the mechanisms of reported anode materials and summarize the related factors that influence the reaction processes.This review aims to dissect all possible side reactions during charging and discharging process,uncover internal and external factors inducing various anode reactions and finally put forward strategies of controlling high cycling capacity and super-stable lithium storage capability of MoS_(2).This review will be helpful to the design of MoS_(2)-based lithium-ion batteries(LIBs) with excellent cycle performance to enlarge the application fields of these advanced electrochemical energy storage devices.展开更多
Owing to their advantages,such as a high energy density,low operating potential,high abundance,and low cost,rechargeable silicon(Si)anode lithium-ion batteries(LIBs)have attracted considerable interest.Significant adv...Owing to their advantages,such as a high energy density,low operating potential,high abundance,and low cost,rechargeable silicon(Si)anode lithium-ion batteries(LIBs)have attracted considerable interest.Significant advancements in Si-based LIBs have been made over the past decade.Nevertheless,because the cycle instability is a crucial factor in the half/full-battery design and significantly affects the consumption of active components and the weight of the assembled battery,it has become a concern in recent years.This paper presents a thorough analysis of the recent developments in the enhancement methods for the stability of LIBs.Comprehensive in situ and operando characterizations are performed to thoroughly evaluate the electrochemical reactions,structural evolution,and degradation processes.Approaches for enhancing the cycle stability of Si anodes are systematically divided from a design perspective into several categories,such as the structural regulation,interfacial design,binder architecture,and electrolyte additives.The advantages and disadvantages of several methods are emphasized and thoroughly evaluated,offering insightful information for the logical design and advancement of cutting-edge solutions to address the deteriorating low-cycle stability of silicon-based LIBs.Finally,the conclusions and potential future research perspectives for promoting the cycling instability of silicon-based LIBs are presented.展开更多
基金financially supported by the National Funds for Distinguished Young Scientists (No. 61825503)the National Natural Science Foundation of China (Nos. 51902101, 61775101,61804082)+3 种基金the Youth Natural Science Foundation of Hunan Province (No. 2019JJ50044)Natural Science Foundation of Jiangsu Province (No. BK20201381)Science Foundation of Nanjing University of Posts and Telecommunications (No. NY219144)China Postdoctoral Science Foundation (Nos. 2020TQ0202, 2021M692161)。
文摘Molybdenum disulfide(MoS_(2)),a typical two-dimensional transition metallic layered material,attracts tremendous attentions in the electrochemical energy storage due to its excellent physicochemical properties.However,with the deepening of the research and exploration of the lithium storage mechanism of these advanced MoS_(2)-based anode materials,the complex reaction process influenced by internal and external factors hinders the exhaustive understanding of the lithium storage process.To design stable anode material with high performance,it is urgent to review the mechanisms of reported anode materials and summarize the related factors that influence the reaction processes.This review aims to dissect all possible side reactions during charging and discharging process,uncover internal and external factors inducing various anode reactions and finally put forward strategies of controlling high cycling capacity and super-stable lithium storage capability of MoS_(2).This review will be helpful to the design of MoS_(2)-based lithium-ion batteries(LIBs) with excellent cycle performance to enlarge the application fields of these advanced electrochemical energy storage devices.
基金financially supported by the National Natural Science Foundation of China(Grant Nos.U22A20420,22078029,22208029,and 52203292)Postgraduate Research&Practice Innovation Program of Jiangsu Province(Grant No.KYCX23_3027)the“333 high-level talent training project”young and middle-aged leading talent project of Jiangsu Province.
文摘Owing to their advantages,such as a high energy density,low operating potential,high abundance,and low cost,rechargeable silicon(Si)anode lithium-ion batteries(LIBs)have attracted considerable interest.Significant advancements in Si-based LIBs have been made over the past decade.Nevertheless,because the cycle instability is a crucial factor in the half/full-battery design and significantly affects the consumption of active components and the weight of the assembled battery,it has become a concern in recent years.This paper presents a thorough analysis of the recent developments in the enhancement methods for the stability of LIBs.Comprehensive in situ and operando characterizations are performed to thoroughly evaluate the electrochemical reactions,structural evolution,and degradation processes.Approaches for enhancing the cycle stability of Si anodes are systematically divided from a design perspective into several categories,such as the structural regulation,interfacial design,binder architecture,and electrolyte additives.The advantages and disadvantages of several methods are emphasized and thoroughly evaluated,offering insightful information for the logical design and advancement of cutting-edge solutions to address the deteriorating low-cycle stability of silicon-based LIBs.Finally,the conclusions and potential future research perspectives for promoting the cycling instability of silicon-based LIBs are presented.
