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...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.展开更多
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)+1 种基金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)。
文摘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.
