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Salt-Templated Nanoarchitectonics of CoSe(2)-NC Nanosheets as an Efficient Bifunctional Oxygen Electrocatalyst for Water Splitting

Recently, the extensive research of efficient bifunctional electrocatalysts (oxygen evolution reaction (OER) and hydrogen evolution reaction (HER)) on water splitting has drawn increasing attention. Herein, a salt-template strategy is prepared to synthesize nitrogen-doped carbon nanosheets encapsula...

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Autores principales: Cao, Hong, Li, Hailong, Liu, Linhao, Xue, Kangning, Niu, Xinkai, Hou, Juan, Chen, Long
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9099664/
https://www.ncbi.nlm.nih.gov/pubmed/35563630
http://dx.doi.org/10.3390/ijms23095239
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author Cao, Hong
Li, Hailong
Liu, Linhao
Xue, Kangning
Niu, Xinkai
Hou, Juan
Chen, Long
author_facet Cao, Hong
Li, Hailong
Liu, Linhao
Xue, Kangning
Niu, Xinkai
Hou, Juan
Chen, Long
author_sort Cao, Hong
collection PubMed
description Recently, the extensive research of efficient bifunctional electrocatalysts (oxygen evolution reaction (OER) and hydrogen evolution reaction (HER)) on water splitting has drawn increasing attention. Herein, a salt-template strategy is prepared to synthesize nitrogen-doped carbon nanosheets encapsulated with dispersed CoSe(2) nanoparticles (CoSe(2)-NC NSs), while the thickness of CoSe(2)-NC NSs is only about 3.6 nm. Profiting from the ultrathin morphology, large surface area, and promising electrical conductivity, the CoSe(2)-NC NSs exhibited excellent electrocatalytic of 10 mA·cm(−2) current density at small overpotentials of 247 mV for OER and 75 mV for HER. Not only does the nitrogen-doped carbon matrix effectively avoid self-aggregation of CoSe(2) nanoparticles, but it also prevents the corrosion of CoSe(2) from electrolytes and shows favorable durability after long-term stability tests. Furthermore, an overall water-splitting system delivers a current density of 10 mA·cm(−2) at a voltage of 1.54 V with resultants being both the cathode and anode catalyst in alkaline solutions. This work provides a new way to synthesize efficient and nonprecious bifunctional electrocatalysts for water splitting.
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spelling pubmed-90996642022-05-14 Salt-Templated Nanoarchitectonics of CoSe(2)-NC Nanosheets as an Efficient Bifunctional Oxygen Electrocatalyst for Water Splitting Cao, Hong Li, Hailong Liu, Linhao Xue, Kangning Niu, Xinkai Hou, Juan Chen, Long Int J Mol Sci Article Recently, the extensive research of efficient bifunctional electrocatalysts (oxygen evolution reaction (OER) and hydrogen evolution reaction (HER)) on water splitting has drawn increasing attention. Herein, a salt-template strategy is prepared to synthesize nitrogen-doped carbon nanosheets encapsulated with dispersed CoSe(2) nanoparticles (CoSe(2)-NC NSs), while the thickness of CoSe(2)-NC NSs is only about 3.6 nm. Profiting from the ultrathin morphology, large surface area, and promising electrical conductivity, the CoSe(2)-NC NSs exhibited excellent electrocatalytic of 10 mA·cm(−2) current density at small overpotentials of 247 mV for OER and 75 mV for HER. Not only does the nitrogen-doped carbon matrix effectively avoid self-aggregation of CoSe(2) nanoparticles, but it also prevents the corrosion of CoSe(2) from electrolytes and shows favorable durability after long-term stability tests. Furthermore, an overall water-splitting system delivers a current density of 10 mA·cm(−2) at a voltage of 1.54 V with resultants being both the cathode and anode catalyst in alkaline solutions. This work provides a new way to synthesize efficient and nonprecious bifunctional electrocatalysts for water splitting. MDPI 2022-05-07 /pmc/articles/PMC9099664/ /pubmed/35563630 http://dx.doi.org/10.3390/ijms23095239 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Cao, Hong
Li, Hailong
Liu, Linhao
Xue, Kangning
Niu, Xinkai
Hou, Juan
Chen, Long
Salt-Templated Nanoarchitectonics of CoSe(2)-NC Nanosheets as an Efficient Bifunctional Oxygen Electrocatalyst for Water Splitting
title Salt-Templated Nanoarchitectonics of CoSe(2)-NC Nanosheets as an Efficient Bifunctional Oxygen Electrocatalyst for Water Splitting
title_full Salt-Templated Nanoarchitectonics of CoSe(2)-NC Nanosheets as an Efficient Bifunctional Oxygen Electrocatalyst for Water Splitting
title_fullStr Salt-Templated Nanoarchitectonics of CoSe(2)-NC Nanosheets as an Efficient Bifunctional Oxygen Electrocatalyst for Water Splitting
title_full_unstemmed Salt-Templated Nanoarchitectonics of CoSe(2)-NC Nanosheets as an Efficient Bifunctional Oxygen Electrocatalyst for Water Splitting
title_short Salt-Templated Nanoarchitectonics of CoSe(2)-NC Nanosheets as an Efficient Bifunctional Oxygen Electrocatalyst for Water Splitting
title_sort salt-templated nanoarchitectonics of cose(2)-nc nanosheets as an efficient bifunctional oxygen electrocatalyst for water splitting
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9099664/
https://www.ncbi.nlm.nih.gov/pubmed/35563630
http://dx.doi.org/10.3390/ijms23095239
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