Journal article
Carbon nanotube-linked hollow carbon nanospheres doped with iron and nitrogen as single-atom catalysts for the oxygen reduction reaction in acidic solutions
Journal of materials chemistry. A, Materials for energy and sustainability, Vol.7(24), pp.14478-14482
06/18/2019
Abstract
Non-noble metal electrocatalysts toward the oxygen reduction reaction (ORR) are highly required to substitute expensive Pt/C as the cathode of proton exchange membrane fuel cells. However, the relatively low ORR activity of Pt-free catalysts under acidic conditions is the major issue. Herein, we engineered a three-dimensional structure consisting of atomically dispersed Fe, N-doped hollow carbon nanospheres linked by carbon nanotubes as an electrocatalyst for the ORR. Benefiting from the unique structure and high-density atomic Fe-N-x sites, this new type of electrocatalyst showed an impressive ORR half-wave potential of 0.84 V and kinetic current density of 13.1 mA cm(-2) at a potential of 0.8 V in acidic media, which was even better those of commercial Pt/C.
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Details
- Title
- Carbon nanotube-linked hollow carbon nanospheres doped with iron and nitrogen as single-atom catalysts for the oxygen reduction reaction in acidic solutions
- Creators
- Jin-Cheng Li - University of Hong KongMin Cheng - Chinese Academy of SciencesTao Li - Argonne National LaboratoryLu Ma - Northern Illinois UniversityXiaofan Ruan - Washington State UniversityDong Liu - Washington State UniversityHui-Ming Cheng - Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R ChinaChang Liu - Chinese Academy of SciencesDan Du - Washington State UniversityZidong Wei - Chongqing UniversityYuehe Lin - Washington State UniversityMinhua Shao - Guangzhou HKUST Fok Ying Tung Research Institute
- Publication Details
- Journal of materials chemistry. A, Materials for energy and sustainability, Vol.7(24), pp.14478-14482
- Academic Unit
- School of Mechanical and Materials Engineering
- Publisher
- Royal Soc Chemistry
- Number of pages
- 5
- Grant note
- JCYJ20180507183818040 / Shenzhen Science and Technology Innovation Commission N_HKUST610/17 / Research Grant Council of the Hong Kong Special Administrative Region; Hong Kong Research Grants Council 2017YFB0102900 / National Key R&D Program of China NIU start-up fund DE-AC02-06CH11357 / U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE) 201704030019; 201704030065 / Guangdong Special Fund for Science and Technology Development (Hong Kong Technology Cooperation Funding Scheme)
- Identifiers
- 99901227839501842
- Language
- English
- Resource Type
- Journal article