Study of the mechanism of nitrogen doping in carbon supports on promoting electrocatalytic oxygen reduction reaction over platinum nanoparticles

SUN Xue-qin; GAO Xin-hua; WANG Ying-yong; TONG Xi-li

doi:10.1016/S1872-5813(22)60030-6

Volume 50 Issue 11

Nov. 2022

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Article Navigation > Journal of Fuel Chemistry and Technology > 2022 > 50(11): 1427-1436

SUN Xue-qin, GAO Xin-hua, WANG Ying-yong, TONG Xi-li. Study of the mechanism of nitrogen doping in carbon supports on promoting electrocatalytic oxygen reduction reaction over platinum nanoparticles[J]. Journal of Fuel Chemistry and Technology, 2022, 50(11): 1427-1436. doi: 10.1016/S1872-5813(22)60030-6

Citation:

SUN Xue-qin, GAO Xin-hua, WANG Ying-yong, TONG Xi-li. Study of the mechanism of nitrogen doping in carbon supports on promoting electrocatalytic oxygen reduction reaction over platinum nanoparticles[J]. Journal of Fuel Chemistry and Technology, 2022, 50(11): 1427-1436. doi: 10.1016/S1872-5813(22)60030-6

Citation:

SUN Xue-qin, GAO Xin-hua, WANG Ying-yong, TONG Xi-li. Study of the mechanism of nitrogen doping in carbon supports on promoting electrocatalytic oxygen reduction reaction over platinum nanoparticles[J]. Journal of Fuel Chemistry and Technology, 2022, 50(11): 1427-1436. doi: 10.1016/S1872-5813(22)60030-6

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Study of the mechanism of nitrogen doping in carbon supports on promoting electrocatalytic oxygen reduction reaction over platinum nanoparticles

doi: 10.1016/S1872-5813(22)60030-6

SUN Xue-qin^{1, 2
,},
GAO Xin-hua³,
WANG Ying-yong^{1
,
,},
TONG Xi-li^{1
,
,}

1.
State Key Laboratory of Coal Conversion, Analytical Instrumentation Center, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China

Funds: The project was supported by National Natural Science Foundation of China (U1710112) and Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (2022-K71).

More Information

Corresponding author: Tel: +86-351-4065282, wangyy79@sxicc.ac.cn; tongxili@sxicc.ac.cn
Received Date: 2022-03-10
Accepted Date: 2022-04-07
Rev Recd Date: 2022-04-07

Available Online: 2022-05-20

Publish Date: 2022-11-30

Abstract

Abstract

Nitrogen-doped carbons (Nano-NC) are often employed as functional supports for boosting oxygen reduction reaction (ORR) over Pt-based catalysts, however, the mechanism of N doping on the adsorption and activation of molecular oxygen on Pt active sites is still not clear. Herein, Nano-NCs as the supports were prepared by a facile NH₃ antipyretic method, which allowed to tune the kinds of nitrogen species in carbon matrix and their contents by adjusting the NH₃ antipyretic temperatures. With such an exquisite control, the Pt nanoparticles loaded on the as-obtained Nano-NC showed an optimal Pt particle size (2.10 nm), a higher content of Pt⁰, a large electrochemically active surface area, and fast electron transport ability. As a consequence, the Pt/Nano-NC-800 catalyst with the optimal N-doping showed an outstanding ORR performance with half-wave potential of 0.80 V vs. RHE, limit diffusion current of 5.37 mA/cm² and improved methanol/CO anti-poisoning, which is superior to the commercial Pt/C catalyst (20%, JM), and most of previously reported Pt-based catalysts. This work may pave a way for the design of the advanced supports for Pt-based catalysts for the ORR applications.
- N-doped carbon,
- nanoparticle size,
- oxygen reduction reaction,
- mechanism

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References(67)

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