Surface modulated Fe doping of β-Ni(OH)2 nanosheets for highly promoted oxygen evolution electrocatalysis

Shuisheng Hu; Yong Li; Daekyu Kim; Mengjie Liu; Lawrence Yoon Suk Lee; Kwok-Yin Wong

doi:10.1002/eom2.12256

Surface modulated Fe doping of β-Ni(OH)2 nanosheets for highly promoted oxygen evolution electrocatalysis

Shuisheng Hu, Yong Li, Daekyu Kim, Mengjie Liu, Lawrence Yoon Suk Lee, Kwok-Yin Wong

Research output: Journal article publication › Journal article › Academic research › peer-review

26 Citations (Scopus)

Abstract

Active yet low-cost electrocatalysts for water oxidation are crucial for the development of hydrogen energy economy. The Fe doping into Ni(OH) ₂ dramatically enhances catalytic activity toward oxygen evolution reaction (OER) but fabricating Ni(OH) ₂ of high Fe loading is still challenging. Herein, we report a one-pot strategy to prepare disordered β-Ni(OH) ₂ nanosheets with a high Fe doping level (9.9 at%, D-Fe-Ni(OH) ₂). By engaging 1,4-phenylenediphosphonic acid (BDPA), Fe _xBDPA _y precursors are in situ generated in a growth solution containing Fe ³⁺ ions, which decrease the reaction kinetics of Ni ²⁺ and Fe ³⁺ ions at the surface of Ni foam. This prevents the deconstructive hydrolysis by Fe ³⁺ ions and enables a high Fe-doping in D-Fe-Ni(OH) ₂. The as-prepared D-Fe-Ni(OH) ₂ affords 10 mA cm ⁻² at an ultralow OER overpotential of 194 mV in alkaline media. This work offers a promising strategy of engaging organic ligands to achieve high-doping levels for the construction of efficient electrocatalysts. (Figure presented.).

Original language	English
Article number	e12256
Pages (from-to)	e12256
Number of pages	11
Journal	EcoMat
Volume	4
Issue number	6
Early online date	5 Jul 2022
DOIs	https://doi.org/10.1002/eom2.12256
Publication status	Published - Nov 2022

Keywords

electrocatalysis
high Fe doping
in situ Raman spectroscopy
nickel–iron hydroxide
oxygen evolution reaction

More information

10.1002/eom2.12256

Cite this

@article{7f4622ac3917484dafe207b418ac86ac,

title = "Surface modulated Fe doping of β-Ni(OH)2 nanosheets for highly promoted oxygen evolution electrocatalysis",

abstract = "Active yet low-cost electrocatalysts for water oxidation are crucial for the development of hydrogen energy economy. The Fe doping into Ni(OH) 2 dramatically enhances catalytic activity toward oxygen evolution reaction (OER) but fabricating Ni(OH) 2 of high Fe loading is still challenging. Herein, we report a one-pot strategy to prepare disordered β-Ni(OH) 2 nanosheets with a high Fe doping level (9.9 at%, D-Fe-Ni(OH) 2). By engaging 1,4-phenylenediphosphonic acid (BDPA), Fe xBDPA y precursors are in situ generated in a growth solution containing Fe 3+ ions, which decrease the reaction kinetics of Ni 2+ and Fe 3+ ions at the surface of Ni foam. This prevents the deconstructive hydrolysis by Fe 3+ ions and enables a high Fe-doping in D-Fe-Ni(OH) 2. The as-prepared D-Fe-Ni(OH) 2 affords 10 mA cm −2 at an ultralow OER overpotential of 194 mV in alkaline media. This work offers a promising strategy of engaging organic ligands to achieve high-doping levels for the construction of efficient electrocatalysts. (Figure presented.).",

keywords = "electrocatalysis, high Fe doping, in situ Raman spectroscopy, nickel–iron hydroxide, oxygen evolution reaction",

author = "Shuisheng Hu and Yong Li and Daekyu Kim and Mengjie Liu and Lee, {Lawrence Yoon Suk} and Kwok-Yin Wong",

note = "Funding Information: We acknowledge the support from the Innovation and Technology Commission and The Hong Kong Polytechnic University. L. Y. S. Lee acknowledges the support from the Research Institute for Smart Energy of the Hong Kong Polytechnic University (Q‐CDA3). K.‐Y. Wong acknowledges the support from the Patrick S. C. Poon Endowed Professorship. D. Kim acknowledges the award of the Hong Kong PhD Fellowship. S. Hu and Y. Li contributed equally to this work. Publisher Copyright: {\textcopyright} 2022 The Authors. EcoMat published by The Hong Kong Polytechnic University and John Wiley & Sons Australia, Ltd.",

year = "2022",

month = nov,

doi = "10.1002/eom2.12256",

language = "English",

volume = "4",

pages = "e12256",

journal = "EcoMat",

issn = "2567-3173",

publisher = "John Wiley & Sons, Ltd",

number = "6",

}

TY - JOUR

T1 - Surface modulated Fe doping of β-Ni(OH)2 nanosheets for highly promoted oxygen evolution electrocatalysis

AU - Hu, Shuisheng

AU - Li, Yong

AU - Kim, Daekyu

AU - Liu, Mengjie

AU - Lee, Lawrence Yoon Suk

AU - Wong, Kwok-Yin

N1 - Funding Information: We acknowledge the support from the Innovation and Technology Commission and The Hong Kong Polytechnic University. L. Y. S. Lee acknowledges the support from the Research Institute for Smart Energy of the Hong Kong Polytechnic University (Q‐CDA3). K.‐Y. Wong acknowledges the support from the Patrick S. C. Poon Endowed Professorship. D. Kim acknowledges the award of the Hong Kong PhD Fellowship. S. Hu and Y. Li contributed equally to this work. Publisher Copyright: © 2022 The Authors. EcoMat published by The Hong Kong Polytechnic University and John Wiley & Sons Australia, Ltd.

PY - 2022/11

Y1 - 2022/11

N2 - Active yet low-cost electrocatalysts for water oxidation are crucial for the development of hydrogen energy economy. The Fe doping into Ni(OH) 2 dramatically enhances catalytic activity toward oxygen evolution reaction (OER) but fabricating Ni(OH) 2 of high Fe loading is still challenging. Herein, we report a one-pot strategy to prepare disordered β-Ni(OH) 2 nanosheets with a high Fe doping level (9.9 at%, D-Fe-Ni(OH) 2). By engaging 1,4-phenylenediphosphonic acid (BDPA), Fe xBDPA y precursors are in situ generated in a growth solution containing Fe 3+ ions, which decrease the reaction kinetics of Ni 2+ and Fe 3+ ions at the surface of Ni foam. This prevents the deconstructive hydrolysis by Fe 3+ ions and enables a high Fe-doping in D-Fe-Ni(OH) 2. The as-prepared D-Fe-Ni(OH) 2 affords 10 mA cm −2 at an ultralow OER overpotential of 194 mV in alkaline media. This work offers a promising strategy of engaging organic ligands to achieve high-doping levels for the construction of efficient electrocatalysts. (Figure presented.).

AB - Active yet low-cost electrocatalysts for water oxidation are crucial for the development of hydrogen energy economy. The Fe doping into Ni(OH) 2 dramatically enhances catalytic activity toward oxygen evolution reaction (OER) but fabricating Ni(OH) 2 of high Fe loading is still challenging. Herein, we report a one-pot strategy to prepare disordered β-Ni(OH) 2 nanosheets with a high Fe doping level (9.9 at%, D-Fe-Ni(OH) 2). By engaging 1,4-phenylenediphosphonic acid (BDPA), Fe xBDPA y precursors are in situ generated in a growth solution containing Fe 3+ ions, which decrease the reaction kinetics of Ni 2+ and Fe 3+ ions at the surface of Ni foam. This prevents the deconstructive hydrolysis by Fe 3+ ions and enables a high Fe-doping in D-Fe-Ni(OH) 2. The as-prepared D-Fe-Ni(OH) 2 affords 10 mA cm −2 at an ultralow OER overpotential of 194 mV in alkaline media. This work offers a promising strategy of engaging organic ligands to achieve high-doping levels for the construction of efficient electrocatalysts. (Figure presented.).

KW - electrocatalysis

KW - high Fe doping

KW - in situ Raman spectroscopy

KW - nickel–iron hydroxide

KW - oxygen evolution reaction

UR - http://www.scopus.com/inward/record.url?scp=85136025608&partnerID=8YFLogxK

U2 - 10.1002/eom2.12256

DO - 10.1002/eom2.12256

M3 - Journal article

SN - 2567-3173

VL - 4

SP - e12256

JO - EcoMat

JF - EcoMat

IS - 6

M1 - e12256

ER -

Surface modulated Fe doping of β-Ni(OH)2 nanosheets for highly promoted oxygen evolution electrocatalysis

Abstract

Keywords

More information

Other files and links

Fingerprint

Cite this