Application prospects of high-voltage cathode materials in all-solid-state lithium-ion batteries  

作　　者：Jun Tian Yi Jin Yibiao Guan Yuefeng Su Liying Bao Shi Chen Feng Wu 

机构地区：[1]Beijing Key Laboratory of Environmental Science and Engineering,School of Chemical Engineering and the Environment,Beijing Institute of Technology [2]China Electric Power Research Institute [3]National Development Center of High Technology Green Materials

出　　处：《Chinese Science Bulletin》2014年第17期1950-1963,共14页

基　　金：supported by the National Basic Research Program of China (2009CB220100);the National Natural Science Foundation of China (51102018,21103011);the National High Technology Research and Development Program of China (2011AA11A235,SQ2010AA1123116001);the Science and Technology Project of State Grid Corporation (DG71-13-033)

摘　　要：All-solid-state lithium-ion batteries are lithiumion batteries with solid-state electrolytes instead of liquid electrolytes.They are hopeful in solving the safety problems of lithium-ion batteries,once their large capacity and long life are achieved,they will have broad application prospects in the field of electric vehicles and large-scale energy storage.The working potential window of solid electrolytes is wider than that of liquid electrolytes,so high-voltage cathode materials could be used in all-solidstate lithium-ion batteries to get higher energy density and larger capacity by elevating the working voltage of the batteries.The spinel LiNi0.5Mn1.5O4material,layered Li–Ni–Co–Mn–O cathode materials and lithium-rich cathode materials can be expected to be applied to all-solid-state lithium-ion batteries as cathode materials due to their highvoltage platforms.In this review,the electrochemical properties and structures of spinel LiNi0.5Mn1.5O4material,layered Li–Ni–Co–Mn–O cathode materials and lithiumrich cathode materials are introduced.More attentions are paid on recent research progress of conductivity and interface stability of these materials,in order to improve their compatibility with solid electrolytes as cathode materials in all-solid-state lithium-ion batteries and fully improve the properties of all-solid-state batteries.Finally,the existing problems of their application in all-solid-state lithium-ion batteries are summarized,the main research directions are put forward and their application prospects in all-solid-state lithium-ion batteries are discussed.All-solid-state lithium-ion batteries are lithium- ion batteries with solid-state electrolytes instead of liquid electrolytes. They are hopeful in solving the safety prob- lems of lithium-ion batteries, once their large capacity and long life are achieved, they will have broad application prospects in the field of electric vehicles and large-scale energy storage. The working potential window of solid electrolytes is wider than that of liquid electrolytes, so high-voltage cathode materials could be used in all-solid- state lithium-ion batteries to get higher energy density and larger capacity by elevating the working voltage of the batteries. The spinel LiNi0.5Mn1.5O4 material, layered Li- Ni-Co-Mn-O cathode materials and lithium-rich cathode materials can be expected to be applied to all-solid-state lithium-ion batteries as cathode materials due to their high- voltage platforms. In this review, the electrochemical properties and structures of spinel LiNi0.5Mn1.5O4 material, layered Li-Ni-Co-Mn-O cathode materials and lithium- rich cathode materials are introduced. More attentions are paid on recent research progress of conductivity and interface stability of these materials, in order to improve their compatibility with solid electrolytes as cathode materials in all-solid-state lithium-ion batteries and fullyimprove the properties of all-solid-state batteries. Finally, the existing problems of their application in all-solid-state lithium-ion batteries are summarized, the main research directions are put forward and their application prospects in all-solid-state lithium-ion batteries are discussed.

关 键 词：高电压阴极材料 锂离子电池 全固态电池 正极材料 应用 液体电解质 固体电解质 电化学性能 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ174.758[化学工程—陶瓷工业]