Kraft lignin derived molybdenum carbide/nitrogen-doped carbon composite for efficient hydrogen evolution reaction

Na Yeong Oh; Geon Hee Lee; Hyung Mo Jeong; Yong Sik Kim; Duck Hyun Youn

doi:10.1149/1945-7111/ac1eba

Kraft lignin derived molybdenum carbide/nitrogen-doped carbon composite for efficient hydrogen evolution reaction

Na Yeong Oh, Geon Hee Lee, Hyung Mo Jeong, Yong Sik Kim, Duck Hyun Youn

Department of Mechanical Engineering

Kangwon National University

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

8 Scopus citations

Abstract

This paper reports a simple, unique, and eco-friendly fabrication method for composites of molybdenum carbide nanoparticles dispersed on nitrogen-doped carbon supports (Mo₂C/NC) by annealing of MoCl₅, kraft lignin, urea at 750 °C under N₂ flow in one pot. Kraft lignin, a by-product from the pulping industry, acted as carbon source for formation of Mo₂C and carbon support and a cheap urea provided a nitrogen source for nitrogen-doping to carbon supports. The resultant Mo₂C/NC catalysts exhibited high activity with small overpotential (131 mV at 10 mA cm^-2) and excellent stability over 3000 potential cycles for hydrogen evolution reaction (HER) in alkaline media. Enhanced HER activity of Mo₂C/NC catalyst was attributed to highly active Mo₂C nanoparticles and nitrogen-doped carbon (N-doped carbon) providing large surface area and high electrical conductivity.

Original language	English
Article number	084511
Journal	Journal of the Electrochemical Society
Volume	168
Issue number	8
DOIs	https://doi.org/10.1149/1945-7111/ac1eba
State	Published - Aug 2021

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title = "Kraft lignin derived molybdenum carbide/nitrogen-doped carbon composite for efficient hydrogen evolution reaction",

abstract = "This paper reports a simple, unique, and eco-friendly fabrication method for composites of molybdenum carbide nanoparticles dispersed on nitrogen-doped carbon supports (Mo2C/NC) by annealing of MoCl5, kraft lignin, urea at 750 °C under N2 flow in one pot. Kraft lignin, a by-product from the pulping industry, acted as carbon source for formation of Mo2C and carbon support and a cheap urea provided a nitrogen source for nitrogen-doping to carbon supports. The resultant Mo2C/NC catalysts exhibited high activity with small overpotential (131 mV at 10 mA cm-2) and excellent stability over 3000 potential cycles for hydrogen evolution reaction (HER) in alkaline media. Enhanced HER activity of Mo2C/NC catalyst was attributed to highly active Mo2C nanoparticles and nitrogen-doped carbon (N-doped carbon) providing large surface area and high electrical conductivity.",

author = "Oh, \{Na Yeong\} and Lee, \{Geon Hee\} and Jeong, \{Hyung Mo\} and Kim, \{Yong Sik\} and Youn, \{Duck Hyun\}",

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doi = "10.1149/1945-7111/ac1eba",

language = "English",

volume = "168",

journal = "Journal of the Electrochemical Society",

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T1 - Kraft lignin derived molybdenum carbide/nitrogen-doped carbon composite for efficient hydrogen evolution reaction

AU - Oh, Na Yeong

AU - Lee, Geon Hee

AU - Jeong, Hyung Mo

AU - Kim, Yong Sik

AU - Youn, Duck Hyun

PY - 2021/8

Y1 - 2021/8

N2 - This paper reports a simple, unique, and eco-friendly fabrication method for composites of molybdenum carbide nanoparticles dispersed on nitrogen-doped carbon supports (Mo2C/NC) by annealing of MoCl5, kraft lignin, urea at 750 °C under N2 flow in one pot. Kraft lignin, a by-product from the pulping industry, acted as carbon source for formation of Mo2C and carbon support and a cheap urea provided a nitrogen source for nitrogen-doping to carbon supports. The resultant Mo2C/NC catalysts exhibited high activity with small overpotential (131 mV at 10 mA cm-2) and excellent stability over 3000 potential cycles for hydrogen evolution reaction (HER) in alkaline media. Enhanced HER activity of Mo2C/NC catalyst was attributed to highly active Mo2C nanoparticles and nitrogen-doped carbon (N-doped carbon) providing large surface area and high electrical conductivity.

AB - This paper reports a simple, unique, and eco-friendly fabrication method for composites of molybdenum carbide nanoparticles dispersed on nitrogen-doped carbon supports (Mo2C/NC) by annealing of MoCl5, kraft lignin, urea at 750 °C under N2 flow in one pot. Kraft lignin, a by-product from the pulping industry, acted as carbon source for formation of Mo2C and carbon support and a cheap urea provided a nitrogen source for nitrogen-doping to carbon supports. The resultant Mo2C/NC catalysts exhibited high activity with small overpotential (131 mV at 10 mA cm-2) and excellent stability over 3000 potential cycles for hydrogen evolution reaction (HER) in alkaline media. Enhanced HER activity of Mo2C/NC catalyst was attributed to highly active Mo2C nanoparticles and nitrogen-doped carbon (N-doped carbon) providing large surface area and high electrical conductivity.

UR - https://www.scopus.com/pages/publications/85114391273

U2 - 10.1149/1945-7111/ac1eba

DO - 10.1149/1945-7111/ac1eba

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SN - 0013-4651

VL - 168

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

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M1 - 084511

ER -

Kraft lignin derived molybdenum carbide/nitrogen-doped carbon composite for efficient hydrogen evolution reaction

Abstract

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