Synergized Ni/NiOx heterojunction encapsulated by N-doped graphitized carbon core@shell electrocatalyst for efficient hydrogen production

Mengxue Liu; Jiajia Zhang; Fang Cui; Yuqi Yan; Tieyu Cui

doi:10.1016/j.matlet.2022.133043

Synergized Ni/NiO_x heterojunction encapsulated by N-doped graphitized carbon core@shell electrocatalyst for efficient hydrogen production

Mengxue Liu
, Jiajia Zhang
, Fang Cui^*
, Yuqi Yan
, Tieyu Cui

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology

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

4 Scopus citations

Abstract

In this paper, based on the self-assembly of nickel glycinate, the Ni/NiO_x heterojunction encapsulated by nitrogen-doped graphitized carbon shells (Ni/NiO_x@NC) was prepared via two facile steps for hydrogen production. Attributed to the synergistic catalysis of the well-proportioned Ni/NiO_x heterojunction, the accelerated electron transport and the protective effect of the NC layers, the prepared Ni/NiO_x@NC catalysts exhibited good electrocatalytic performance, with a minimum overpotential of 173 mV (vs RHE) at the current density of 10 mA cm⁻² in 1 M KOH and the slight performance degradation after continuous cyclic voltammetry sweeps for 6000 cycles.

Original language	English
Article number	133043
Journal	Materials Letters
Volume	327
DOIs	https://doi.org/10.1016/j.matlet.2022.133043
State	Published - 15 Nov 2022
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Energy storage and conversion
Hydrogen evolution reaction
Nanocomposites
Ni/NiO heterojunction

Access to Document

10.1016/j.matlet.2022.133043

Cite this

@article{87331faaa4994fe5844bc34daee098dc,

title = "Synergized Ni/NiOx heterojunction encapsulated by N-doped graphitized carbon core@shell electrocatalyst for efficient hydrogen production",

abstract = "In this paper, based on the self-assembly of nickel glycinate, the Ni/NiOx heterojunction encapsulated by nitrogen-doped graphitized carbon shells (Ni/NiOx@NC) was prepared via two facile steps for hydrogen production. Attributed to the synergistic catalysis of the well-proportioned Ni/NiOx heterojunction, the accelerated electron transport and the protective effect of the NC layers, the prepared Ni/NiOx@NC catalysts exhibited good electrocatalytic performance, with a minimum overpotential of 173 mV (vs RHE) at the current density of 10 mA cm−2 in 1 M KOH and the slight performance degradation after continuous cyclic voltammetry sweeps for 6000 cycles.",

keywords = "Energy storage and conversion, Hydrogen evolution reaction, Nanocomposites, Ni/NiO heterojunction",

author = "Mengxue Liu and Jiajia Zhang and Fang Cui and Yuqi Yan and Tieyu Cui",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = nov,

day = "15",

doi = "10.1016/j.matlet.2022.133043",

language = "英语",

volume = "327",

journal = "Materials Letters",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Synergized Ni/NiOx heterojunction encapsulated by N-doped graphitized carbon core@shell electrocatalyst for efficient hydrogen production

AU - Liu, Mengxue

AU - Zhang, Jiajia

AU - Cui, Fang

AU - Yan, Yuqi

AU - Cui, Tieyu

PY - 2022/11/15

Y1 - 2022/11/15

N2 - In this paper, based on the self-assembly of nickel glycinate, the Ni/NiOx heterojunction encapsulated by nitrogen-doped graphitized carbon shells (Ni/NiOx@NC) was prepared via two facile steps for hydrogen production. Attributed to the synergistic catalysis of the well-proportioned Ni/NiOx heterojunction, the accelerated electron transport and the protective effect of the NC layers, the prepared Ni/NiOx@NC catalysts exhibited good electrocatalytic performance, with a minimum overpotential of 173 mV (vs RHE) at the current density of 10 mA cm−2 in 1 M KOH and the slight performance degradation after continuous cyclic voltammetry sweeps for 6000 cycles.

AB - In this paper, based on the self-assembly of nickel glycinate, the Ni/NiOx heterojunction encapsulated by nitrogen-doped graphitized carbon shells (Ni/NiOx@NC) was prepared via two facile steps for hydrogen production. Attributed to the synergistic catalysis of the well-proportioned Ni/NiOx heterojunction, the accelerated electron transport and the protective effect of the NC layers, the prepared Ni/NiOx@NC catalysts exhibited good electrocatalytic performance, with a minimum overpotential of 173 mV (vs RHE) at the current density of 10 mA cm−2 in 1 M KOH and the slight performance degradation after continuous cyclic voltammetry sweeps for 6000 cycles.

KW - Energy storage and conversion

KW - Hydrogen evolution reaction

KW - Nanocomposites

KW - Ni/NiO heterojunction

UR - https://www.scopus.com/pages/publications/85136537027

U2 - 10.1016/j.matlet.2022.133043

DO - 10.1016/j.matlet.2022.133043

M3 - 文章

AN - SCOPUS:85136537027

SN - 0167-577X

VL - 327

JO - Materials Letters

JF - Materials Letters

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