文献类型：期刊文献

英文题名：Enhanced Electrochemical Performance of Hydrous RuO2/Mesoporous Carbon Nanocomposites via Nitrogen Doping

作者：Zhang, Chuanfang[1];Xie, Yingbo[3];Zhao, Mengqiang[2];Pentecost, Amanda E.[2];Ling, Zheng[2];Wang, Jitong[1];Long, Donghui[1];Ling, Licheng[1];Qiao, Wenming[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Drexel Univ, Dept Mat Sci & Engn, AJ Drexel Nanomat Inst, Philadelphia, PA 19104 USA;[3]Titan Chem Co LTD, Shanghai 200237, Peoples R China

年份：2014

卷号：6

期号：12

起止页码：9751

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20142717906183);WOS:【SCI-EXPANDED(收录号:WOS:000338184500102)】；

基金：This work was partially supported by MOST (2014CB239702) and National Science Foundation of China (nos. 51302083 and 51272077), and Program of Shanghai Subject Chief Scientist (B type, no. 13XD1424900). Electron microscopy was carried out at the Drexel Centralized Research Facilities (CRF). Professor Yury Gogotsi (Drexel University) is greatly acknowledged for helpful data discussion. K. Jost is thanked for manuscript revision. L. Kong is thanked for EDX.

语种：英文

外文关键词：pseudocapacitor; ruthenium oxide; nitrogen-enriched mesoporous carbon; high power performance; hydrothermal method

摘要：Hydrous RuO2 nanoparticles have been uniformly deposited onto nitrogen-enriched mesoporous carbons (NMCs) via a facile hydrothermal method. The nitrogen doping in the carbon framework not only provides reversible pseudocapacitance but also guides uniform deposition of RuO2 nanoparticles. As a result, an extremely high specific capacitance of 1733 F/g per RuO2, comparable to the theoretic capacitance of RuO2, is reached when 4.3 wt % of RuO2 center dot 1.25H(2)O is loaded onto the NMCs. Systematic studies show that either nitrogen-free or excess nitrogen doping result in RuO2 clusters formation and worsen the electrochemical performances. With intermediate nitrogen and RuO2 content (8.1 wt % N, 29.6 wt % of RuO2 center dot 1.25H(2)O), the composites deliver excellent power performance and high specific capacitance (402 F/g) with reversible capacitive response at 500 mV/s. The unique properties of nitrogen in textual, morphological, and electrochemical aspects may also provide further understanding about the effects of nitrogen doping and metal oxide deposition on supercapacitor performance.