Hybrid pseudocapacitance/co-intercalation mechanisms of TiO_(2)/graphite anodes for rapid sodium-ion storage  

作　　者：Ze-Rui Yan Da-Fu Tang Bin-Hao Wang Xiao-Juan Huang Xia Zou Si-Cheng Fan Yan Wu Tong Shu Qiu-Long Wei 

机构地区：[1]Department of Materials Science and Engineering,College of Materials,Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials,Xiamen University,Xiamen 361005,China

出　　处：《Rare Metals》2024年第10期5427-5434,共8页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.22179113);the Fundamental Research Funds for the Central Universities(Nos.20720230028 and 20720210045);the Science and Technology Projects of Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM)(No.HRTP-2022-19);the XMU Training Program of Innovation and Entrepreneurship for Undergraduates(No.2021Y1089)。

摘　　要：Developing anode materials with high specific/volumetric capacities,high-rate capability,long-term cycles and low cost is significant for advanced sodium-ion storage.Herein,we report the hybrid TiO_(2)/graphite(TiO_(2)/G)anodes for fast(dis)charging sodium-ion storage.Taking advantage of the rapid pseudocapacitive surface-redox on anatase TiO_(2)nanoparticles(NPs)and fast[Na(diglyme)_(x)]^(+)co-intercalation into graphite,the hybrid anodes display excellent rate capabilities.Additionally,the TiO_(2)NPs are able to fill into the interspaces among graphite flakes and the graphite provides continuous electron pathways,which largely boosts the volumetric capacities and rate performance.

关 键 词：BOOST INTERCALATION CAPACITANCE 

分 类 号：TB332[一般工业技术—材料科学与工程] TM91[电气工程—电力电子与电力传动]