Homologous CoP/NiCoP Heterostructure on N‐Doped Carbon for Highly Efficient and pH‐Universal Hydrogen Evolution Electrocatalysis
Abstract
Hydrogen evolution electrocatalysts can achieve sustainable hydrogen production via electrocatalytic water splitting; however, designing highly active and stable noble‐metal‐free hydrogen evolution electrocatalysts that perform as efficiently as Pt catalysts over a wide pH range is a challenging task. Herein, a new 2D cobalt phosphide/nickelcobalt phosphide (CoP/NiCoP) hybrid nanosheet network is proposed, supported on an N‐doped carbon (NC) matrix as a highly efficient and durable pH‐universal hydrogen evolution reaction (HER) electrocatalyst. It is derived from topological transformation of corresponding layer double hydroxides and graphitic carbon nitride. This 2D CoP/NiCoP/NC catalyst exhibits versatile HER electroactivity with very low overpotentials of 75, 60, and 123 mV in 1 m KOH, 0.5 m H 2 SO 4 , and 1 m PBS electrolytes, respectively, delivering a current density of 10 mA cm −2 for HER. Such impressive HER performance of the hybrid electrocatalyst is mainly attributed to the collective effects of electronic structure engineering, strong interfacial coupling between CoP and NiCoP in heterojunction, an enlarged surface area/exposed catalytic active sites due to the 2D morphology, and conductive NC support. This method is believed to provide a basis for the development of efficient 2D electrode materials with various electrochemical applications.
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Transition metal phosphides have received considerable attention due to their intrinsic electronic structure, moderate cost and preferable catalytic activity.
“Among them, transition metal phosphides (TMPs) have received considerable attention, thanks to their intrinsic electronic structure, moderate cost and preferable catalytic activity [21,22].”
From Encapsulating hollow (Co,Fe)P nanoframes into N,P-codoped graphene aerogel for highly efficient water splitting (2020) · cites this paper as [21]
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Rational Design of Transition Metal Phosphide‐Based Electrocatalysts for Hydrogen Evolution
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- Authors
- Boppella, R., Tan, J., Yang, W., & Moon, J.
- Affiliations
- Yonsei University (KR)
- Corresponding author
- Moon, Jooho
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2018-12-13
- Volume
- 29
- Issue
- 6
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2904135604
- Cited by
- 380
- References
- 6
- Citations by year
- 2026: 8 · 2025: 36 · 2024: 53 · 2023: 60 · 2022: 61 · 2021: 73 · 2020: 66 · 2019: 23
- FWCI
- 9.34
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Advanced Functional Materials (publishedVersion)
- Funders
- National Research Foundation of Korea (2012R1A3A2026417)
- Ministry of Science ICT and Future Planning
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
- Keywords
- hydrogen evolution reaction, cobalt phosphide, nitrogen-doped carbon, heterostructures, pH-universal electrocatalysis, noble-metal-free electrocatalysts, layered double hydroxides, graphitic carbon nitride, interfacial coupling, electronic structure engineering, water splitting, electrochemical hydrogen production
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