Journal article
Enhanced Electrochemical Performance of Hydrous RuO2/Mesoporous Carbon Nanocomposites via Nitrogen Doping
ACS applied materials & interfaces, v 6(12), pp 9751-9759
25 Jun 2014
PMID: 24847730
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
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.
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Details
- Title
- Enhanced Electrochemical Performance of Hydrous RuO2/Mesoporous Carbon Nanocomposites via Nitrogen Doping
- Creators
- Chuanfang Zhang - E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R ChinaYingbo Xie - Titan Chem Co., LTD, Shanghai 200237, ChinaMengqiang Zhao - Drexel Univ, Dept Mat Sci & Engn, AJ Drexel Nanomat Inst, Philadelphia, PA 19104 USAAmanda E. Pentecost - Drexel UniversityZheng Ling - Drexel UniversityJitong Wang - East China University of Science and TechnologyDonghui Long - East China University of Science and TechnologyLicheng Ling - East China University of Science and TechnologyWenming Qiao - East China University of Science and TechnologySarah S Long - Pediatrics
- Publication Details
- ACS applied materials & interfaces, v 6(12), pp 9751-9759
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 9
- Grant note
- 51302083; 51272077 / National Science Foundation of China; National Natural Science Foundation of China (NSFC) 2014CB239702 / MOST 13XD1424900 / Program of Shanghai Subject Chief Scientist (B type)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Pediatrics
- Web of Science ID
- WOS:000338184500102
- Scopus ID
- 2-s2.0-84903516961
- Other Identifier
- 991019353724404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology