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Synergistic Effect of Nitrogen in Cobalt Nitride and Nitrogen-Doped Hollow Carbon Spheres for the Oxygen Reduction Reaction
Zhong, Xing; Liu, Lin; Jiang, Yu; Wang, Xinde; Wang, Lei; Zhuang, Guilin; Li, Xiaonian; Mei, Donghai; Wang, Jian-guo; Su, Dang Sheng; jgw@zjut.edu.cn; dssu@imr.ac.cn
2015
Source PublicationCHEMCATCHEM
ISSN1867-3880
Volume7Issue:12Pages:1826-1832
AbstractThe need for inexpensive and high-activity oxygen-reduction-reaction (ORR) electrocatalysts has attracted considerable research interest over the past years. Herein, we report a novel hybrid that contains cobalt nitride/nitrogen-rich hollow carbon spheres (CoxN/NHCS) as a high-performance catalyst for ORR. The CoxN nanoparticles were uniformly dispersed and confined in the hollow NHCS shell. The performance of the resulting CoxN/NHCS hybrid was comparable with that of a commercial Pt/C at the same catalyst loading toward ORR, but the mass activity of the former was 5.7times better than that of the latter. The nitrogen in both CoxN and NHCS, especially CoxN, could weaken the adsorption of reaction intermediates (O and OOH), which follows the favorable reaction pathway on CoxN/NHCS according to the DFT-calculated Gibbs free-energy diagrams. Our results demonstrated a new strategy for the design and development of inexpensive, nonprecious-metal electrocatalysts for next-generation fuels.
description.department[zhong, xing ; liu, lin ; jiang, yu ; wang, xinde ; wang, lei ; zhuang, guilin ; li, xiaonian ; wang, jian-guo] zhejiang univ technol, coll chem engn & mat sci, hangzhou 310032, zhejiang, peoples r china ; [su, dang sheng] chinese acad sci shenyang, shenyang natl lab mat sci, inst met res, liaoning 110016, peoples r china ; [su, dang sheng] max planck gesell, fritz haber inst, d-14195 berlin, germany ; [mei, donghai] pacific nw natl lab, inst integrated catalysis, richland, wa 99352 usa
KeywordCobalt Nitride Electrocatalysis Fuel Cells Hollow Carbon Spheres Oxygen Reduction
Funding OrganizationNational Basic Research Program (973 program) [2013CB733501]; National Natural Science Foundation of China [21306169, 21101137, 21136001, 21176221, 91334013]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75160
Collection中国科学院金属研究所
Corresponding Authorjgw@zjut.edu.cn; dssu@imr.ac.cn
Recommended Citation
GB/T 7714
Zhong, Xing,Liu, Lin,Jiang, Yu,et al. Synergistic Effect of Nitrogen in Cobalt Nitride and Nitrogen-Doped Hollow Carbon Spheres for the Oxygen Reduction Reaction[J]. CHEMCATCHEM,2015,7(12):1826-1832.
APA Zhong, Xing.,Liu, Lin.,Jiang, Yu.,Wang, Xinde.,Wang, Lei.,...&dssu@imr.ac.cn.(2015).Synergistic Effect of Nitrogen in Cobalt Nitride and Nitrogen-Doped Hollow Carbon Spheres for the Oxygen Reduction Reaction.CHEMCATCHEM,7(12),1826-1832.
MLA Zhong, Xing,et al."Synergistic Effect of Nitrogen in Cobalt Nitride and Nitrogen-Doped Hollow Carbon Spheres for the Oxygen Reduction Reaction".CHEMCATCHEM 7.12(2015):1826-1832.
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