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

10 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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This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy
SDG 9 Industry, Innovation, and Infrastructure

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10.1149/1945-7111/ac1eba

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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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year = "2021",

month = aug,

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

language = "English",

volume = "168",

journal = "Journal of the Electrochemical Society",

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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

M3 - Article

AN - SCOPUS:85114391273

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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