Boron and nitrogen co-doped carbon dots for boosting electrocatalytic oxygen reduction

LIU Hui; LIU Zi-hui; ZHANG Jin-qiang; ZHI Lin-jie; WU Ming-bo

doi:10.1016/S1872-5805(21)60043-4

Volume 36 Issue 3

Jun. 2021

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Article Navigation > New Carbon Mater. > 2021 > 36(3): 585-593

LIU Hui, LIU Zi-hui, ZHANG Jin-qiang, ZHI Lin-jie, WU Ming-bo. Boron and nitrogen co-doped carbon dots for boosting electrocatalytic oxygen reduction. New Carbon Mater., 2021, 36(3): 585-593. doi: 10.1016/S1872-5805(21)60043-4

Citation:

LIU Hui, LIU Zi-hui, ZHANG Jin-qiang, ZHI Lin-jie, WU Ming-bo. Boron and nitrogen co-doped carbon dots for boosting electrocatalytic oxygen reduction. New Carbon Mater., 2021, 36(3): 585-593. doi: 10.1016/S1872-5805(21)60043-4

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Boron and nitrogen co-doped carbon dots for boosting electrocatalytic oxygen reduction

doi: 10.1016/S1872-5805(21)60043-4

1.
State Key Laboratory of Heavy Oil Processing, College of New Energy, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
2.
School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia
3.
College of New Energy, China University of Petroleum (East China), Qingdao 266580, China

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Author Bio:
刘　卉，博士研究生. E-mail：liuhui9104@163.com
Corresponding author: WU Ming-bo, Professor. E-mail: wumb@upc.edu.cn
Received Date: 2021-05-06
Rev Recd Date: 2021-05-14

Available Online: 2021-05-31

Publish Date: 2021-06-01

Abstract

Abstract

Carbon dots (CDs) have become an emerging carbon nanomaterial for use in energy-conversion systems because of their large surface area and rapid electron transfer. Carbon dots (BN-CDs) doped with both boron and nitrogen were synthesized by a simple one-step electrochemical etching approach using low-cost petroleum coke as precursor. Compared with CDs doped with only B or N, BN-CDs showed an excellent four-electron oxygen reduction reaction (ORR) activity with a positive onset potential of 0.958 V and a large diffusion-limited current density of −4.32 mA cm⁻². Furthermore, the long-term stability and methanol tolerance of BN-CDs were better than those of a commercial Pt/C catalyst. It was found by density functional theory (DFT) calculation that the co-doping of N and B promoted the adsorption of O₂ molecules in the ORR process. This work provides new insight into the rational design of carbon nanomaterials and their use in energy conversion.
- Carbon dots,
- Boron doping,
- Nitrogen doping,
- Oxygen reduction reaction

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References(33)

References

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