A Nickel Coated Copper Substrate as a Hydrogen Evolution Catalyst

Poshan Kumar Reddy Kuppam; K. M.M.D.K. Kimbulapitiya; Srikanth Vuppala; Kuangye Wang; G. Phaneendra Reddy; Krishna P. Pande; Po Tsung Lee; Yun Lun Chueh

doi:10.3390/catal12010058

A Nickel Coated Copper Substrate as a Hydrogen Evolution Catalyst

Poshan Kumar Reddy Kuppam, K. M.M.D.K. Kimbulapitiya, Srikanth Vuppala^*, Kuangye Wang, G. Phaneendra Reddy, Krishna P. Pande^*, Po Tsung Lee^*, Yun Lun Chueh

^*Corresponding author for this work

Department of Photonics

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

5 Scopus citations

Abstract

Replacing precious metals with low-cost metals is the best solution for large scale pro-duction. Copper is known for its excellent conductivity and thermal management applications. When it comes to hydrogen evolution reaction, it is highly unstable, especially in KOH solution. In this paper, we approached a simple method to reduce corrosion and improve the performance by depositing nickel-molybdenum oxide and nickel on copper substrates and the achieved tafel slopes of 115 mV/dec and 117 mV/dec at 10 mA/cm². While at first, molybdenum oxide coated samples showed better performance after 100 cycles of stability tests, the onset potential rapidly changed. Cu–Ni, which was deposited using the electron gun evaporation (e-gun), has shown better performance with 0.28 V at 10 mA/cm² and led to stability after 100 cycles. Our results show that when copper is alloyed with nickel, it acts as a promising hydrogen evolution reaction (HER) catalyst.

Original language	English
Article number	58
Journal	Catalysts
Volume	12
Issue number	1
DOIs	https://doi.org/10.3390/catal12010058
State	Published - Jan 2022

Keywords

Coating
Copper
Hydrogen evolution
Nickel

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10.3390/catal12010058

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title = "A Nickel Coated Copper Substrate as a Hydrogen Evolution Catalyst",

abstract = "Replacing precious metals with low-cost metals is the best solution for large scale pro-duction. Copper is known for its excellent conductivity and thermal management applications. When it comes to hydrogen evolution reaction, it is highly unstable, especially in KOH solution. In this paper, we approached a simple method to reduce corrosion and improve the performance by depositing nickel-molybdenum oxide and nickel on copper substrates and the achieved tafel slopes of 115 mV/dec and 117 mV/dec at 10 mA/cm2. While at first, molybdenum oxide coated samples showed better performance after 100 cycles of stability tests, the onset potential rapidly changed. Cu–Ni, which was deposited using the electron gun evaporation (e-gun), has shown better performance with 0.28 V at 10 mA/cm2 and led to stability after 100 cycles. Our results show that when copper is alloyed with nickel, it acts as a promising hydrogen evolution reaction (HER) catalyst.",

keywords = "Coating, Copper, Hydrogen evolution, Nickel",

author = "Kuppam, {Poshan Kumar Reddy} and Kimbulapitiya, {K. M.M.D.K.} and Srikanth Vuppala and Kuangye Wang and Reddy, {G. Phaneendra} and Pande, {Krishna P.} and Lee, {Po Tsung} and Chueh, {Yun Lun}",

note = "Publisher Copyright: {\textcopyright} 2022 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2022",

month = jan,

doi = "10.3390/catal12010058",

language = "English",

volume = "12",

journal = "Catalysts",

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T1 - A Nickel Coated Copper Substrate as a Hydrogen Evolution Catalyst

AU - Kuppam, Poshan Kumar Reddy

AU - Kimbulapitiya, K. M.M.D.K.

AU - Vuppala, Srikanth

AU - Wang, Kuangye

AU - Reddy, G. Phaneendra

AU - Pande, Krishna P.

AU - Lee, Po Tsung

AU - Chueh, Yun Lun

PY - 2022/1

Y1 - 2022/1

N2 - Replacing precious metals with low-cost metals is the best solution for large scale pro-duction. Copper is known for its excellent conductivity and thermal management applications. When it comes to hydrogen evolution reaction, it is highly unstable, especially in KOH solution. In this paper, we approached a simple method to reduce corrosion and improve the performance by depositing nickel-molybdenum oxide and nickel on copper substrates and the achieved tafel slopes of 115 mV/dec and 117 mV/dec at 10 mA/cm2. While at first, molybdenum oxide coated samples showed better performance after 100 cycles of stability tests, the onset potential rapidly changed. Cu–Ni, which was deposited using the electron gun evaporation (e-gun), has shown better performance with 0.28 V at 10 mA/cm2 and led to stability after 100 cycles. Our results show that when copper is alloyed with nickel, it acts as a promising hydrogen evolution reaction (HER) catalyst.

AB - Replacing precious metals with low-cost metals is the best solution for large scale pro-duction. Copper is known for its excellent conductivity and thermal management applications. When it comes to hydrogen evolution reaction, it is highly unstable, especially in KOH solution. In this paper, we approached a simple method to reduce corrosion and improve the performance by depositing nickel-molybdenum oxide and nickel on copper substrates and the achieved tafel slopes of 115 mV/dec and 117 mV/dec at 10 mA/cm2. While at first, molybdenum oxide coated samples showed better performance after 100 cycles of stability tests, the onset potential rapidly changed. Cu–Ni, which was deposited using the electron gun evaporation (e-gun), has shown better performance with 0.28 V at 10 mA/cm2 and led to stability after 100 cycles. Our results show that when copper is alloyed with nickel, it acts as a promising hydrogen evolution reaction (HER) catalyst.

KW - Coating

KW - Copper

KW - Hydrogen evolution

KW - Nickel

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VL - 12

JO - Catalysts

JF - Catalysts

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ER -

A Nickel Coated Copper Substrate as a Hydrogen Evolution Catalyst

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Keywords

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