Yang Shuhua, Song Xuefeng, Zhang Peng, Gao Lian
State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, China.
ACS Appl Mater Interfaces. 2015 Jan 14;7(1):75-9. doi: 10.1021/am507910f. Epub 2014 Dec 24.
Porous α-Fe2O3/graphene composites (S-PIGCs) have been synthesized by a simple hydrothermal method combined with a slow annealing route. The S-PIGCs as a supercapacitors electrode material exhibit an ultrahigh specific capacitance of 343.7 F g(-1) at a current density of 3 A g(-1), good rate capability, and excellent cycling stability. The enhanced electrochemical performances are attributed to the combined contribution from the optimally architecture of the porous α-Fe2O3, as a result of a slow annealing, and the extraordinary electrical conductivity of the graphene sheets.
通过简单的水热法结合缓慢退火路线合成了多孔α-Fe2O3/石墨烯复合材料（S-PIGCs）。S-PIGCs作为超级电容器电极材料，在3 A g(-1)的电流密度下表现出343.7 F g(-1)的超高比电容、良好的倍率性能和优异的循环稳定性。电化学性能的增强归因于缓慢退火导致的多孔α-Fe2O3的优化结构以及石墨烯片优异的导电性的共同贡献。
