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Li R, Zhang C, Li S, Du Y. Experimental and theoretical investigations into propane dehydrogenation over MIL-101(Cr/Al) derived catalysts. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2022.112894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Li Q, Zhang K, Wang H, Zhang J, Shao G, Zhu J, Liu W, Fan B, Xu H, Lu H, Zhou Y, Zhang R, Wang Z. A highly durable CoO x/N-doped graphitized-nano-diamond electrocatalyst for oxygen reduction reaction. NANOTECHNOLOGY 2021; 32:355708. [PMID: 33984850 DOI: 10.1088/1361-6528/ac00e1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 05/13/2021] [Indexed: 06/12/2023]
Abstract
Oxygen reduction reaction (ORR) occupies a pivotal position in fuel cell applications, and it is a challenge to obtain highly durable ORR catalysts. Herein, porous cobalt oxide microsphere growing at the surface of on nitrogen-doped graphitized-nano-diamond (CoOx/N-GND) was prepared using hydrothermal and subsequent heat treatment process. Porous cobalt oxide of high specific surface area could expose more surface Co2+that act as active sites than bulk one does. The doping of nitrogen also promotes the catalytic activity. Besides, nano-diamond (ND) ofsp3hybrid structure was used as an electronic conduction carriers of ultrahigh stability to improve the durability of catalytic composite. Prepared CoOx/N-GND shows a satisfactory half-wave potential of 0.82 V (versus RHE), which is close to that of Pt/C (0.85 V), an excellent methanol tolerance and a lower activity loss after 5000 cycles. These merits inspire the application of CoOx/N-GND as the cathode of Zn-air battery and the battery performance was evaluated in this work. In general, this work highlights an innovate approach to design and prepare highly durable catalyst.
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Affiliation(s)
- Qiang Li
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Kehao Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Hailong Wang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Jianan Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Gang Shao
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Jinpeng Zhu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Wen Liu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Bingbing Fan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Hongliang Xu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Hongxia Lu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Yanchun Zhou
- Science and Technology on Advanced Functional Composite Laboratory, Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, People's Republic of China
| | - Rui Zhang
- Zhengzhou University of Aeronautics, Zhengzhou 450046, People's Republic of China
| | - Zhiqiang Wang
- Henan Functional Diamond Material Innovation Center, Zhengzhou 450001, People's Republic of China
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