• 文献标题:   SnO2 nano-particles imbedded in graphene bulk as anode material for lithium-ion batteries
  • 文献类型:   Article
  • 作  者:   HUA XY, SHEN YW, SHI SJ
  • 作者关键词:   tin oxide, graphene, hierarchical structure, stirring solvothermal reaction, lithiumion battery
  • 出版物名称:   IONICS
  • ISSN:   0947-7047 EI 1862-0760
  • 通讯作者地址:   Changshu Inst Technol
  • 被引频次:   2
  • DOI:   10.1007/s11581-019-03131-0
  • 出版年:   2019

▎ 摘  要

SnO2 is recently considered as one of the most promising candidates for anode material of lithium-ion batteries(LIBs). However, its poor electronic conductivity and serious volume effect limit its application. Here, SnO2 nano-particles are imbedded in porous graphene bulk through destabilized solvothermal reaction. High weight loading of SnO2 (91.5 wt%) and larger surface area of 202.1 m(2) g(-1) are obtained to ensure high specific capacities. Thus, high reversible discharge/charge capacities of 1361/1341 mAh g(-1) remained after 100 cycles at 0.2 A g(-1). Even at 2.0 A g(-1), SnO2/graphene still delivers high reversible discharge/charge capacities of 1010/1002 mAh g(-1) with a capacity retention of 91% after 300 cycles. Such excellent property is ascribed to special hierarchical structure, which not only offers a rapid electron transfer meshwork but also plays as an efficient buffer to release the serious inner stress from the volumetric effect.