Chemical and structural engineering of transition metal boride towards excellent and sustainable hydrogen evolution reaction

Soumen Dutta, Hyuk Su Han, Minyeong Je, Heechae Choi, Jiseok Kwon, Keemin Park, Arindam Indra, Kang Min Kim, Ungyu Paik, Taeseup Song

Research output: Contribution to journalArticle

Abstract

Herein, holey, thin, conductive nickel substituted cobalt molybdenum boride (Ni-CMB) nanosheets have been designed to obtain superior electrochemical HER performance with small overpotential of 69 mV at 10 mA cm-2 current density and lower Tafel slope of 76.3 mV dec-1 in alkaline medium. Incorporation of Ni leads to improved conductivity and favorable hydrogen adsorption on Mo sites, which collectively yield efficient electrocatalytic H2 production from Ni-CMB catalyst. The ultrathin nature (thickness = 5.0 nm) of the designed material expectedly helps to attain high exposure of active sites and facile charge transportation through the nanosheets. Additionally, the decorated mesopores (average size = 3.86 nm) on nanosheets have benefitted towards faster electrolyte diffusion, easy gas escape from catalyst surface to support high electrocatalytic performance. Finally, well-maintained morphology of the sample and evolution of HER active sites in the material have guaranteed long-term, sustainable hydrogen production even at high current densities, which clearly demonstrate its superiority over an expensive electrolyzer (Pt-C) in alkaline water.

Original languageEnglish
Article number104245
JournalNano Energy
Volume67
DOIs
StatePublished - 2020 Jan

Fingerprint

Boron Compounds
Borides
Nanosheets
Chemical engineering
Structural design
Transition metals
Hydrogen
Cobalt
Nickel
Molybdenum
Current density
Transportation charges
Catalysts
Diffusion in gases
Hydrogen production
Catalyst supports
Electrolytes
Adsorption
Water
molybdenum boride

Keywords

  • Durability
  • Holey nanosheets
  • Hydrogen evolution reaction
  • Lower overpotential
  • Metal boride

Cite this

Dutta, Soumen ; Han, Hyuk Su ; Je, Minyeong ; Choi, Heechae ; Kwon, Jiseok ; Park, Keemin ; Indra, Arindam ; Kim, Kang Min ; Paik, Ungyu ; Song, Taeseup. / Chemical and structural engineering of transition metal boride towards excellent and sustainable hydrogen evolution reaction. In: Nano Energy. 2020 ; Vol. 67.
@article{4f604520c30740cd9bb627ec80055765,
title = "Chemical and structural engineering of transition metal boride towards excellent and sustainable hydrogen evolution reaction",
abstract = "Herein, holey, thin, conductive nickel substituted cobalt molybdenum boride (Ni-CMB) nanosheets have been designed to obtain superior electrochemical HER performance with small overpotential of 69 mV at 10 mA cm-2 current density and lower Tafel slope of 76.3 mV dec-1 in alkaline medium. Incorporation of Ni leads to improved conductivity and favorable hydrogen adsorption on Mo sites, which collectively yield efficient electrocatalytic H2 production from Ni-CMB catalyst. The ultrathin nature (thickness = 5.0 nm) of the designed material expectedly helps to attain high exposure of active sites and facile charge transportation through the nanosheets. Additionally, the decorated mesopores (average size = 3.86 nm) on nanosheets have benefitted towards faster electrolyte diffusion, easy gas escape from catalyst surface to support high electrocatalytic performance. Finally, well-maintained morphology of the sample and evolution of HER active sites in the material have guaranteed long-term, sustainable hydrogen production even at high current densities, which clearly demonstrate its superiority over an expensive electrolyzer (Pt-C) in alkaline water.",
keywords = "Durability, Holey nanosheets, Hydrogen evolution reaction, Lower overpotential, Metal boride",
author = "Soumen Dutta and Han, {Hyuk Su} and Minyeong Je and Heechae Choi and Jiseok Kwon and Keemin Park and Arindam Indra and Kim, {Kang Min} and Ungyu Paik and Taeseup Song",
year = "2020",
month = "1",
doi = "10.1016/j.nanoen.2019.104245",
language = "English",
volume = "67",
journal = "Nano Energy",
issn = "2211-2855",

}

Chemical and structural engineering of transition metal boride towards excellent and sustainable hydrogen evolution reaction. / Dutta, Soumen; Han, Hyuk Su; Je, Minyeong; Choi, Heechae; Kwon, Jiseok; Park, Keemin; Indra, Arindam; Kim, Kang Min; Paik, Ungyu; Song, Taeseup.

In: Nano Energy, Vol. 67, 104245, 01.2020.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Chemical and structural engineering of transition metal boride towards excellent and sustainable hydrogen evolution reaction

AU - Dutta, Soumen

AU - Han, Hyuk Su

AU - Je, Minyeong

AU - Choi, Heechae

AU - Kwon, Jiseok

AU - Park, Keemin

AU - Indra, Arindam

AU - Kim, Kang Min

AU - Paik, Ungyu

AU - Song, Taeseup

PY - 2020/1

Y1 - 2020/1

N2 - Herein, holey, thin, conductive nickel substituted cobalt molybdenum boride (Ni-CMB) nanosheets have been designed to obtain superior electrochemical HER performance with small overpotential of 69 mV at 10 mA cm-2 current density and lower Tafel slope of 76.3 mV dec-1 in alkaline medium. Incorporation of Ni leads to improved conductivity and favorable hydrogen adsorption on Mo sites, which collectively yield efficient electrocatalytic H2 production from Ni-CMB catalyst. The ultrathin nature (thickness = 5.0 nm) of the designed material expectedly helps to attain high exposure of active sites and facile charge transportation through the nanosheets. Additionally, the decorated mesopores (average size = 3.86 nm) on nanosheets have benefitted towards faster electrolyte diffusion, easy gas escape from catalyst surface to support high electrocatalytic performance. Finally, well-maintained morphology of the sample and evolution of HER active sites in the material have guaranteed long-term, sustainable hydrogen production even at high current densities, which clearly demonstrate its superiority over an expensive electrolyzer (Pt-C) in alkaline water.

AB - Herein, holey, thin, conductive nickel substituted cobalt molybdenum boride (Ni-CMB) nanosheets have been designed to obtain superior electrochemical HER performance with small overpotential of 69 mV at 10 mA cm-2 current density and lower Tafel slope of 76.3 mV dec-1 in alkaline medium. Incorporation of Ni leads to improved conductivity and favorable hydrogen adsorption on Mo sites, which collectively yield efficient electrocatalytic H2 production from Ni-CMB catalyst. The ultrathin nature (thickness = 5.0 nm) of the designed material expectedly helps to attain high exposure of active sites and facile charge transportation through the nanosheets. Additionally, the decorated mesopores (average size = 3.86 nm) on nanosheets have benefitted towards faster electrolyte diffusion, easy gas escape from catalyst surface to support high electrocatalytic performance. Finally, well-maintained morphology of the sample and evolution of HER active sites in the material have guaranteed long-term, sustainable hydrogen production even at high current densities, which clearly demonstrate its superiority over an expensive electrolyzer (Pt-C) in alkaline water.

KW - Durability

KW - Holey nanosheets

KW - Hydrogen evolution reaction

KW - Lower overpotential

KW - Metal boride

UR - http://www.scopus.com/inward/record.url?scp=85075364649&partnerID=8YFLogxK

U2 - 10.1016/j.nanoen.2019.104245

DO - 10.1016/j.nanoen.2019.104245

M3 - Article

AN - SCOPUS:85075364649

VL - 67

JO - Nano Energy

JF - Nano Energy

SN - 2211-2855

M1 - 104245

ER -