文献类型：期刊文献

英文题名：Hierarchical self-assembly of ultrathin nickel hydroxide nanoflakes for high-performance supercapacitors

作者：Jiang, Hao[1,2,3];Zhao, Ting[3];Li, Chunzhong[1];Ma, Jan[2,3]

机构：[1]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Nanyang Technol Univ, Temasek Labs, Singapore 637553, Singapore;[3]Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

年份：2011

卷号：21

期号：11

起止页码：3818

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY

收录：;EI(收录号：20111013725440);WOS:【SCI-EXPANDED(收录号:WOS:000287970500044)】；

基金：This work was supported by the National Natural Science Foundation of China (20925621), the Program of Shanghai Subject Chief Scientist (08XD1401500), the Shanghai Shuguang Scholars Tracking Program (08GG09).

语种：英文

外文关键词：Capacitance - Supercapacitor - Nanostructures - Potential energy - Self assembly

摘要：Uniform Ni(OH)(2) hierarchical nanostructures, assembled from ultrathin nanoflakes with thickness of only similar to 7.4 nm, are designed and investigated as electrochemical pseudo-capacitor materials for potential energy storage applications. The ultrathin nanostructures exhibit a highest specific capacitance of 1715 F g(-1) at a scan rate of 5 mV s(-1) within the potential range of 0.6 V with high rate capability and good cycling stability. The high specific capacitance and remarkable rate capability are promising for supercapacitor applications. To understand the effect of the microstructure on the properties, we also synthesized uniformly stacked Ni(OH)(2) nanoplatelets (thickness of similar to 22 nm) and randomly arranged hexagonal nanosheets (thickness of similar to 140 nm). Both of the latter configurations exhibited good performance despite showing inferior properties compared to the uniform ultrathin Ni(OH)(2) nanostructures. These results suggest the importance of rational design and synthesis of ultrathin nanomaterials for high-performance energy applications.