材料科学
超级电容器
电容
电解质
球体
化学工程
纳米技术
氧化还原
储能
电极
光伏
比表面积
光伏系统
催化作用
量子力学
生物化学
天文
生物
物理
工程类
物理化学
功率(物理)
生态学
化学
冶金
作者
Shengjie Peng,Linlin Li,Huiteng Tan,Ren Cai,Wenhui Shi,Cheng Chao Li,Subodh G. Mhaisalkar,Madhavi Srinivasan,Seeram Ramakrishna,Qingyu Yan
标识
DOI:10.1002/adfm.201303273
摘要
We demonstrate in this paper facile synthesis of CoS 2 and NiS 2 hollow spheres with various interiors through a solution‐based route. The obtained CoS 2 microspheres constructed by nanosheets display a three‐dimensional architecture with solid, yolk‐shell, double‐shell, and hollow interiors respectively, with continuous changes in specific surface areas and pore‐size distributions. Especially, the CoS 2 hollow spheres demonstrate excellent supercapacitive performance including high specific capacitance, good charge/discharge stability and long‐term cycling life, owing to the greatly improved faradaic redox reaction and mass transfer. Furthermore, CoS 2 hollow spheres exhibit superior electrocatalytic activity for disulfide/thiolate (T 2 /T − ) redox electrolyte in dye‐sensitized solar cells (DSCs). Therefore, this work provides a promising approach for the design and synthesis of structure tunable materials with largely enhanced supercapacitor behavior, which can be potentially applied in energy storage devices.
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