人工晶体学报2017，Vol.46Issue(7)：1274-1282,9.
SnO2/氮掺杂石墨烯纳米复合材料的制备及其电化学性能研究
Synthesis and Electrochemical Performance Research of SnO2/Nitrogen Doped Graphene Nanocomposites
摘要
Abstract
The SnO2/rGO and SnO2/rGO nano-composite was successfully synthesized by in-situ growing SnO2 nano-particles on GO with a mild hydrothermal method, using ammonium hydroxide as pH modifier to realize N doping of graphene, and the cell as well as catalytic performance of the two composites were investigated.The XRD and SEM results show that SnO2 particles disperse homogeneously on the surface of nitrogen doped graphene(N-rGO) and graphene(rGO) layers with the size of 50 nm and 100 nm respectively.Further TEM results indicate that the SnO2 particles are composed of smaller ones whose size range from 5 nm to 7 nm.The main half-cell test results can be concluded as follows, when the current density is 100 mA/g, the reversible capacities of SnO2/N-rGO and SnO2/rGO are 901 mAh/g and 756 mAh/g, respectively, which are 6.0 and 4.9 times higher than those of the pure SnO2 nanoparticles.The discharge capacities of SnO2/N-rGO and SnO2/rGO at 2 A/g are 619 mAh/g and 511 mAh/g, respectively, exhibiting an excellent rate performance.The electrochemical test proves that the catalytic performance for oxygen reduction reaction (ORR) of SnO2/N-rGO is significantly better than that of the SnO2/rGO and both exhibits a nearly four electron transfer process, providing a new direction for the non-platinum catalyst research.关键词
SnO2/掺氮石墨烯/二次团聚/负极材料/氧还原反应Key words
SnO2/nitrogen doped graphene/secondary aggregations/anode material/oxygen reduction reaction分类
通用工业技术引用本文复制引用
左振民,谢志勇,王乾,刘备,李向辉,黄启忠..SnO2/氮掺杂石墨烯纳米复合材料的制备及其电化学性能研究[J].人工晶体学报,2017,46(7):1274-1282,9.基金项目
国家重点研发计划(2016YFB0101310) （2016YFB0101310）
