Ion‐Exchange‐Assisted Synthesis of Pt‐VC Nanoparticles Loaded on Graphitized Carbon: A High‐Performance Nanocomposite Electrocatalyst for Oxygen‐Reduction Reactions |
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| Authors: | Guoqiang He Zaoxue Yan Dr Mei Cai Prof?Dr Pei Kang Shen Dr Min‐Rui Gao Dr Hong‐Bin Yao Prof?Dr Shu‐Hong Yu |
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| Institution: | 1. State Key Laboratory of Optoelectronic Materials and Technologies, and the Key Laboratory of Low‐Carbon, Chemistry & Energy Conservation of Guangdong Province, School of Physics and Engineering, Sun Yat‐sen University, 135 Xingang Road, Guangzhou, 510275 (P.R. China);2. General Motors Research and Development Center, Warren, Michigan, 48090‐9055 (USA);3. Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026 (P.R. China), Fax: (+86)?551‐3603040 |
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| Abstract: | Carbide‐based electrocatalysts are superior to traditional carbon‐based electrocatalysts, such as the commercial Pt/C electrocatalysts, in terms of their mass activity and stability. Herein, we report a general approach for the preparation of a nanocomposite electrocatalyst of platinum and vanadium carbide nanoparticles that are loaded onto graphitized carbon. The nanocomposite, which was prepared in a localized and controlled fashion by using an ion‐exchange process, was an effective electrocatalyst for the oxygen‐reduction reaction (ORR). Both the stability and the durability of the Pt‐VC/GC nanocomposite catalyst could be enhanced compared with the state‐of‐the‐art Pt/C. This approach can be extended to the synthesis of other metal‐carbide‐based nanocatalysts. Moreover, this straightforward synthesis of high‐performance composite nanocatalysts can be scaled up to meet the requirements for mass production. |
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| Keywords: | electrochemistry ion exchange microwave chemistry nanoparticles oxygen‐reduction reaction |
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