期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 7, 期 3, 页码 3434-3442出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b05654
关键词
Graphene; Doping; Oxygen reduction reaction; Electrocatalysis
资金
- State Key Laboratory of Organic Inorganic Composites [oic-201503005]
- Fundamental Research Funds for the Central Universities [buctrc201525]
- Beijing Municipal Natural Science Foundation [2192039]
- Beijing National Laboratory for Molecular Sciences [BNLMS20160133]
- State Key Laboratory of Separation Membranes and Membrane Processes (Tianjin Polytechnic University) [M2-201704]
- Royal Society
- The World Academy of Sciences (TWAS) [16-072RG/CHE/AF/AC_I_FR3240293327]
Development of naturally abundant, low cost, and energy-efficient electrocatalysts for the oxygen reduction reaction (ORR) is essential for commercialization of fuel cells. In this work, we report simple ultrasonication assisted synthesis of nitrogen and boron dual-doped graphene oxide (NB/GO) and demonstrate its application as an effective ORR catalyst realizing predominantly 4e(-) reduction of O-2 to OH- in 0.1 M KOH. Enhanced ORR electrocatalysis of the dual B and N codoped GO as opposed to GO singly doped with B or N arises from the synergistic interaction of the boron and nitrogen species. The content and configuration of both N and B dopants can be readily tailored by controlling the ultrasonic conditions, thereby permitting tuning of the ORR activity. Furthermore, the developed NB/GO metal-free catalyst exhibited very promising long-term durability and resistance to methanol poisoning compared to the state-of the art Pt/C catalyst.
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