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

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

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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.

Directional charge transferBlack phosphorusCo,N co-doped carbonHeterointerfaceElectrocatalytic water splitting

Jizhou Jiang、Yongjing Wang、Jing Wu、Hao Wang、Arramel、Yilun Zou、Jing Zou、Haitao Wang

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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

Key Laboratory of Rare Mineral,Ministry of Natural Resources,Geological Experimental Testing Center of Hubei Province,Wuhan 430034,China

Nano Center Indonesia,South Tangerang,Banten 15314,Indonesia

National Natural Science Foundation of ChinaKey R&D Program of Hubei ProvinceNatural Science Foundation of Hubei ProvinceNational Key R&D Program of ChinaInnovation Project of Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducatiOpen Research Fund of Key Laboratory of Material Chemistry for Energy Conversion and Storage(HUST)Ministry of Education14th Graduate Education Innovation Fund of Wuhan Institute of Technology14th Graduate Education Innovation Fund of Wuhan Institute of Technology

620041432022BAA0842021CFB1332022YFC3902703LCX20210032021JYBKF05CX2022564CX2022451

2024

10.1016/j.jmst.2023.09.009

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)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.178(11)
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