Highly Desirable Platform for Efficient Hydrogen Generation: Electrodeposited CoP on N-Doped Vertical Graphene

Sanjib Baran Roy; Linh Truong; Jae Ho Jeon; Sunghun Lee; Sahng Kyoon Jerng; Euigeol Jung; Seong Chan Jun; Seung Hyun Chun

doi:10.1021/acsaem.1c00551

Highly Desirable Platform for Efficient Hydrogen Generation: Electrodeposited CoP on N-Doped Vertical Graphene

Sanjib Baran Roy, Linh Truong, Jae Ho Jeon, Sunghun Lee, Sahng Kyoon Jerng, Euigeol Jung, Seong Chan Jun, Seung Hyun Chun

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Vertically oriented graphene nanohills (VGNHs) have been used to boost the hydrogen evolution reaction (HER) activities of various catalysts. To further enhance the HER efficiency, a chemical modification was applied to VGNHs, and a significant improvement was observed in this work. Specifically, the catalytic performances of electrodeposited CoP on as-grown VGNHs (CoP@VGNHs) and on HNO3-treated VGNHs (CoP@N-VGNHs) were compared. The HER performances of the CoP@N-VGNH hybrid were even superior to those of noble metals, manifesting low overpotentials (η10 = 30 mV in acid and η10 = 87 mV in alkali), fast electron transfer, and durability in both acidic and alkaline electrolytes. This emphasizes the potential of physically and chemically modified graphene in the realm of water electrolysis.

Original language	English
Journal	ACS Applied Energy Materials
DOIs	https://doi.org/10.1021/acsaem.1c00551
Publication status	Published - 2021

Bibliographical note

Funding Information:
This work supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT and Ministry of Education (nos. 2016R1E1A1A01942649, 2018R1A5A6075964, 2018K1A4A3A01064272, 2018R1D1A1B07048109, and 2021R1A2C2004324).

Publisher Copyright:
© 2021 American Chemical Society.

All Science Journal Classification (ASJC) codes

Chemical Engineering (miscellaneous)
Energy Engineering and Power Technology
Materials Chemistry
Electrical and Electronic Engineering
Electrochemistry

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10.1021/acsaem.1c00551

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title = "Highly Desirable Platform for Efficient Hydrogen Generation: Electrodeposited CoP on N-Doped Vertical Graphene",

abstract = "Vertically oriented graphene nanohills (VGNHs) have been used to boost the hydrogen evolution reaction (HER) activities of various catalysts. To further enhance the HER efficiency, a chemical modification was applied to VGNHs, and a significant improvement was observed in this work. Specifically, the catalytic performances of electrodeposited CoP on as-grown VGNHs (CoP@VGNHs) and on HNO3-treated VGNHs (CoP@N-VGNHs) were compared. The HER performances of the CoP@N-VGNH hybrid were even superior to those of noble metals, manifesting low overpotentials (η10 = 30 mV in acid and η10 = 87 mV in alkali), fast electron transfer, and durability in both acidic and alkaline electrolytes. This emphasizes the potential of physically and chemically modified graphene in the realm of water electrolysis.",

author = "Roy, {Sanjib Baran} and Linh Truong and Jeon, {Jae Ho} and Sunghun Lee and Jerng, {Sahng Kyoon} and Euigeol Jung and {Chan Jun}, Seong and Chun, {Seung Hyun}",

note = "Funding Information: This work supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT and Ministry of Education (nos. 2016R1E1A1A01942649, 2018R1A5A6075964, 2018K1A4A3A01064272, 2018R1D1A1B07048109, and 2021R1A2C2004324). Publisher Copyright: {\textcopyright} 2021 American Chemical Society.",

year = "2021",

doi = "10.1021/acsaem.1c00551",

language = "English",

journal = "ACS Applied Energy Materials",

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publisher = "American Chemical Society",

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TY - JOUR

T1 - Highly Desirable Platform for Efficient Hydrogen Generation

T2 - Electrodeposited CoP on N-Doped Vertical Graphene

AU - Roy, Sanjib Baran

AU - Truong, Linh

AU - Jeon, Jae Ho

AU - Lee, Sunghun

AU - Jerng, Sahng Kyoon

AU - Jung, Euigeol

AU - Chan Jun, Seong

AU - Chun, Seung Hyun

N1 - Funding Information: This work supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT and Ministry of Education (nos. 2016R1E1A1A01942649, 2018R1A5A6075964, 2018K1A4A3A01064272, 2018R1D1A1B07048109, and 2021R1A2C2004324). Publisher Copyright: © 2021 American Chemical Society.

PY - 2021

Y1 - 2021

N2 - Vertically oriented graphene nanohills (VGNHs) have been used to boost the hydrogen evolution reaction (HER) activities of various catalysts. To further enhance the HER efficiency, a chemical modification was applied to VGNHs, and a significant improvement was observed in this work. Specifically, the catalytic performances of electrodeposited CoP on as-grown VGNHs (CoP@VGNHs) and on HNO3-treated VGNHs (CoP@N-VGNHs) were compared. The HER performances of the CoP@N-VGNH hybrid were even superior to those of noble metals, manifesting low overpotentials (η10 = 30 mV in acid and η10 = 87 mV in alkali), fast electron transfer, and durability in both acidic and alkaline electrolytes. This emphasizes the potential of physically and chemically modified graphene in the realm of water electrolysis.

AB - Vertically oriented graphene nanohills (VGNHs) have been used to boost the hydrogen evolution reaction (HER) activities of various catalysts. To further enhance the HER efficiency, a chemical modification was applied to VGNHs, and a significant improvement was observed in this work. Specifically, the catalytic performances of electrodeposited CoP on as-grown VGNHs (CoP@VGNHs) and on HNO3-treated VGNHs (CoP@N-VGNHs) were compared. The HER performances of the CoP@N-VGNH hybrid were even superior to those of noble metals, manifesting low overpotentials (η10 = 30 mV in acid and η10 = 87 mV in alkali), fast electron transfer, and durability in both acidic and alkaline electrolytes. This emphasizes the potential of physically and chemically modified graphene in the realm of water electrolysis.

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Highly Desirable Platform for Efficient Hydrogen Generation: Electrodeposited CoP on N-Doped Vertical Graphene

Abstract

Bibliographical note

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