Charge transfer interfaces across black phosphorus/Co,N Co-doped carbon heterojunction for enhanced electrocatalytic water splitting

Jizhou Jiang ¹Yongjing Wang ¹Jing Wu ²Hao Wang ¹Arramel ³Yilun Zou ¹Jing Zou ¹Haitao Wang¹

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作者信息

1. School of Environmental Ecology and Biological Engineering,School of Chemistry and Environmental Engineering,Key Laboratory of Green Chemical Engineering Process of Ministry of Education,Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education,Novel Catalytic Materials of Hubei Engineering Research Center,Wuhan Institute of Technology,Wuhan 430205,China
2. Key Laboratory of Rare Mineral,Ministry of Natural Resources,Geological Experimental Testing Center of Hubei Province,Wuhan 430034,China
3. Nano Center Indonesia,South Tangerang,Banten 15314,Indonesia
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Abstract

The practicality of electrochemical water-splitting technology relies on the development of novel and efficient bifunctional electrocatalysts capable of facilitating both the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER).Black phosphorus(BP)holds tremendous promise for HER and OER electrocatalysis owing to its fully exposed atoms and high carrier mobility.However,the elec-trocatalytic performance of BP is still much lower than the expected theoretical limit,presenting an exciting challenge for further advancements.Herein,we embed electrochemically exfoliated few-layer BP nanosheets in higher Fermi level(EF)of cobalt,nitrogen co-doped carbons to form a new heterojunction(CoNC-BP),as efficient bifunctional electrocatalysts toward HER and OER for the advancement overall water splitting applications.A directed interfacial electron transfer is realized from CoNC to BP,facilitated by the lowering Fermi level(EF).This interfacial electron transfer plays a crucial role in optimizing the adsorption and desorption of active intermediates,while also introducing an abundance of hypervalent Co sites.These factors collectively contribute to the remarkable electrocatalytic activities of HER and OER performance,leading to the efficient performance of the developed CoNC-BP heterojunction in water-splitting applications.This work demonstrates a promising breakthrough that can inspire the design of high-efficiency catalysts.

Key words

Directional charge transfer/Black phosphorus/Co,N co-doped carbon/Heterointerface/Electrocatalytic water splitting

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基金项目

National Natural Science Foundation of China(62004143)

Key R&D Program of Hubei Province(2022BAA084)

Natural Science Foundation of Hubei Province(2021CFB133)

National Key R&D Program of China(2022YFC3902703)

Innovation Project of Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Educati(LCX2021003)

Open Research Fund of Key Laboratory of Material Chemistry for Energy Conversion and Storage(HUST)()

Ministry of Education(2021JYBKF05)

14th Graduate Education Innovation Fund of Wuhan Institute of Technology(CX2022564)

14th Graduate Education Innovation Fund of Wuhan Institute of Technology(CX2022451)

出版年

2024

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCD

影响因子：0.657

ISSN：1005-0302

参考文献量46

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