Sulfur enriched cobalt-based layered double hydroxides for oxygen evolution reactions

Sajid Ullah; Umair Shamraiz; Elizbit; Amin Badshah; Bareera Raza; Ahmad Salam Farooqi; Hafiz Muhammad Tofil; Muhammad Adnan Zeb; Akram Alfantazi

doi:10.1016/j.ijhydene.2021.09.201

Sulfur enriched cobalt-based layered double hydroxides for oxygen evolution reactions

Sajid Ullah
, Umair Shamraiz^*
, Elizbit
, Amin Badshah^*
, Bareera Raza
, Ahmad Salam Farooqi
, Hafiz Muhammad Tofil
, Muhammad Adnan Zeb
, Akram Alfantazi

^*Corresponding author for this work

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

19 Scopus citations

Abstract

Sulfur and zinc substituted Co(OH)₂ is synthesized by a simple co-precipitation one-step method followed by solvothermal treatment for oxygen evolution reaction. The high-resolution X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HRTEM) demonstrates that the Zn and S substitution significantly stabilizes the layered structure and causes an increase in the electron density around the Co center. The role of both cation and anion substitution is evaluated to enhance the oxygen evolution reactions. This enhanced activity is due to the in-situ oxidation of divalent Co into trivalent Co, and partially due to the stabilization of the layered structure, as highlighted by PXRD and TEM analysis, the gap between the layers is slightly reduced from 7.8 Å to 7.5 Å, for S–Zn–Co(OH)₂. The in-situ conversion of Co²⁺ to Co³⁺ during electrocatalysis improved the OER electrocatalysis. The structural and physical characterizations are performed via XRD, EDX, SEM, TEM, XPS, AFM and BET.

Original language	English
Pages (from-to)	30799-30809
Number of pages	11
Journal	International Journal of Hydrogen Energy
Volume	47
Issue number	72
DOIs	https://doi.org/10.1016/j.ijhydene.2021.09.201
State	Published - 22 Aug 2022
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021 Hydrogen Energy Publications LLC

UN SDGs

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

SDG 7 Affordable and Clean Energy
SDG 13 Climate Action

Keywords

Cation and anion substitution
Cobalt hydroxide
High current density
Oxygen evolution reaction
Water oxidation

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

Access to Document

10.1016/j.ijhydene.2021.09.201

Cite this

@article{883575f633fc49e0bbd1e74703b807ad,

title = "Sulfur enriched cobalt-based layered double hydroxides for oxygen evolution reactions",

abstract = "Sulfur and zinc substituted Co(OH)2 is synthesized by a simple co-precipitation one-step method followed by solvothermal treatment for oxygen evolution reaction. The high-resolution X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HRTEM) demonstrates that the Zn and S substitution significantly stabilizes the layered structure and causes an increase in the electron density around the Co center. The role of both cation and anion substitution is evaluated to enhance the oxygen evolution reactions. This enhanced activity is due to the in-situ oxidation of divalent Co into trivalent Co, and partially due to the stabilization of the layered structure, as highlighted by PXRD and TEM analysis, the gap between the layers is slightly reduced from 7.8 {\AA} to 7.5 {\AA}, for S–Zn–Co(OH)2. The in-situ conversion of Co2+ to Co3+ during electrocatalysis improved the OER electrocatalysis. The structural and physical characterizations are performed via XRD, EDX, SEM, TEM, XPS, AFM and BET.",

keywords = "Cation and anion substitution, Cobalt hydroxide, High current density, Oxygen evolution reaction, Water oxidation",

author = "Sajid Ullah and Umair Shamraiz and Elizbit and Amin Badshah and Bareera Raza and Farooqi, \{Ahmad Salam\} and Tofil, \{Hafiz Muhammad\} and Zeb, \{Muhammad Adnan\} and Akram Alfantazi",

note = "Publisher Copyright: {\textcopyright} 2021 Hydrogen Energy Publications LLC",

year = "2022",

month = aug,

day = "22",

doi = "10.1016/j.ijhydene.2021.09.201",

language = "English",

volume = "47",

pages = "30799--30809",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Ltd.",

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}

TY - JOUR

T1 - Sulfur enriched cobalt-based layered double hydroxides for oxygen evolution reactions

AU - Ullah, Sajid

AU - Shamraiz, Umair

AU - Elizbit,

AU - Badshah, Amin

AU - Raza, Bareera

AU - Farooqi, Ahmad Salam

AU - Tofil, Hafiz Muhammad

AU - Zeb, Muhammad Adnan

AU - Alfantazi, Akram

PY - 2022/8/22

Y1 - 2022/8/22

N2 - Sulfur and zinc substituted Co(OH)2 is synthesized by a simple co-precipitation one-step method followed by solvothermal treatment for oxygen evolution reaction. The high-resolution X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HRTEM) demonstrates that the Zn and S substitution significantly stabilizes the layered structure and causes an increase in the electron density around the Co center. The role of both cation and anion substitution is evaluated to enhance the oxygen evolution reactions. This enhanced activity is due to the in-situ oxidation of divalent Co into trivalent Co, and partially due to the stabilization of the layered structure, as highlighted by PXRD and TEM analysis, the gap between the layers is slightly reduced from 7.8 Å to 7.5 Å, for S–Zn–Co(OH)2. The in-situ conversion of Co2+ to Co3+ during electrocatalysis improved the OER electrocatalysis. The structural and physical characterizations are performed via XRD, EDX, SEM, TEM, XPS, AFM and BET.

AB - Sulfur and zinc substituted Co(OH)2 is synthesized by a simple co-precipitation one-step method followed by solvothermal treatment for oxygen evolution reaction. The high-resolution X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HRTEM) demonstrates that the Zn and S substitution significantly stabilizes the layered structure and causes an increase in the electron density around the Co center. The role of both cation and anion substitution is evaluated to enhance the oxygen evolution reactions. This enhanced activity is due to the in-situ oxidation of divalent Co into trivalent Co, and partially due to the stabilization of the layered structure, as highlighted by PXRD and TEM analysis, the gap between the layers is slightly reduced from 7.8 Å to 7.5 Å, for S–Zn–Co(OH)2. The in-situ conversion of Co2+ to Co3+ during electrocatalysis improved the OER electrocatalysis. The structural and physical characterizations are performed via XRD, EDX, SEM, TEM, XPS, AFM and BET.

KW - Cation and anion substitution

KW - Cobalt hydroxide

KW - High current density

KW - Oxygen evolution reaction

KW - Water oxidation

UR - https://www.scopus.com/pages/publications/85116910891

U2 - 10.1016/j.ijhydene.2021.09.201

DO - 10.1016/j.ijhydene.2021.09.201

M3 - Article

AN - SCOPUS:85116910891

SN - 0360-3199

VL - 47

SP - 30799

EP - 30809

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 72

ER -

Sulfur enriched cobalt-based layered double hydroxides for oxygen evolution reactions

Abstract

Bibliographical note

UN SDGs

Keywords

ASJC Scopus subject areas

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