Cargando…
MoO(2) nanosheets anchored with Co nanoparticles as a bifunctional electrocatalytic platform for overall water splitting
Electrochemical water splitting is one of the potential commercial techniques to produce clean hydrogen energy because of the high efficiency and environmental friendliness. However, development of low-cost bifunctional electrocatalysts that can replace Pt-based catalysts for the hydrogen evolution...
Autores principales: | , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9721104/ https://www.ncbi.nlm.nih.gov/pubmed/36545597 http://dx.doi.org/10.1039/d2ra06117a |
_version_ | 1784843697948459008 |
---|---|
author | Xia, Lu Li, Yanjun Song, Hao Li, Xingxing Gong, Wenjie Jiang, Xinyu Javanbakht, Mehran Zhang, Xuming Gao, Biao Chu, Paul K. |
author_facet | Xia, Lu Li, Yanjun Song, Hao Li, Xingxing Gong, Wenjie Jiang, Xinyu Javanbakht, Mehran Zhang, Xuming Gao, Biao Chu, Paul K. |
author_sort | Xia, Lu |
collection | PubMed |
description | Electrochemical water splitting is one of the potential commercial techniques to produce clean hydrogen energy because of the high efficiency and environmental friendliness. However, development of low-cost bifunctional electrocatalysts that can replace Pt-based catalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is challenging. Herein, Co nanoparticles (NPs) are anchored on MoO(2) nanosheets (Co/MoO(2)) by thermal reduction of the CoMoO(4) nanosheet array in Ar/H(2). The uniformly distributed Co NPs improve the electron transfer capability and modulate the surface states of the MoO(2) nanosheets to enhance hydrogen desorption and HER kinetics. Moreover, the Co/MoO(2) composite is beneficial to the interfacial structure and the MoO(2) nanosheets prevent aggregation of Co NPs to improve the intrinsic OER characteristics in the alkaline electrolyte. As a result, the Co/MoO(2) electrocatalyst shows low HER and OER overpotentials of 178 and 318 mV at a current density of 10 mA cm(−2) in 1 M KOH. The electrolytic cell consisting of the bifunctional Co/MoO(2) electrodes shows a small voltage of 1.72 V for a current density of 10 mA cm(−2) in overall water splitting. |
format | Online Article Text |
id | pubmed-9721104 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-97211042022-12-20 MoO(2) nanosheets anchored with Co nanoparticles as a bifunctional electrocatalytic platform for overall water splitting Xia, Lu Li, Yanjun Song, Hao Li, Xingxing Gong, Wenjie Jiang, Xinyu Javanbakht, Mehran Zhang, Xuming Gao, Biao Chu, Paul K. RSC Adv Chemistry Electrochemical water splitting is one of the potential commercial techniques to produce clean hydrogen energy because of the high efficiency and environmental friendliness. However, development of low-cost bifunctional electrocatalysts that can replace Pt-based catalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is challenging. Herein, Co nanoparticles (NPs) are anchored on MoO(2) nanosheets (Co/MoO(2)) by thermal reduction of the CoMoO(4) nanosheet array in Ar/H(2). The uniformly distributed Co NPs improve the electron transfer capability and modulate the surface states of the MoO(2) nanosheets to enhance hydrogen desorption and HER kinetics. Moreover, the Co/MoO(2) composite is beneficial to the interfacial structure and the MoO(2) nanosheets prevent aggregation of Co NPs to improve the intrinsic OER characteristics in the alkaline electrolyte. As a result, the Co/MoO(2) electrocatalyst shows low HER and OER overpotentials of 178 and 318 mV at a current density of 10 mA cm(−2) in 1 M KOH. The electrolytic cell consisting of the bifunctional Co/MoO(2) electrodes shows a small voltage of 1.72 V for a current density of 10 mA cm(−2) in overall water splitting. The Royal Society of Chemistry 2022-12-05 /pmc/articles/PMC9721104/ /pubmed/36545597 http://dx.doi.org/10.1039/d2ra06117a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Xia, Lu Li, Yanjun Song, Hao Li, Xingxing Gong, Wenjie Jiang, Xinyu Javanbakht, Mehran Zhang, Xuming Gao, Biao Chu, Paul K. MoO(2) nanosheets anchored with Co nanoparticles as a bifunctional electrocatalytic platform for overall water splitting |
title | MoO(2) nanosheets anchored with Co nanoparticles as a bifunctional electrocatalytic platform for overall water splitting |
title_full | MoO(2) nanosheets anchored with Co nanoparticles as a bifunctional electrocatalytic platform for overall water splitting |
title_fullStr | MoO(2) nanosheets anchored with Co nanoparticles as a bifunctional electrocatalytic platform for overall water splitting |
title_full_unstemmed | MoO(2) nanosheets anchored with Co nanoparticles as a bifunctional electrocatalytic platform for overall water splitting |
title_short | MoO(2) nanosheets anchored with Co nanoparticles as a bifunctional electrocatalytic platform for overall water splitting |
title_sort | moo(2) nanosheets anchored with co nanoparticles as a bifunctional electrocatalytic platform for overall water splitting |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9721104/ https://www.ncbi.nlm.nih.gov/pubmed/36545597 http://dx.doi.org/10.1039/d2ra06117a |
work_keys_str_mv | AT xialu moo2nanosheetsanchoredwithconanoparticlesasabifunctionalelectrocatalyticplatformforoverallwatersplitting AT liyanjun moo2nanosheetsanchoredwithconanoparticlesasabifunctionalelectrocatalyticplatformforoverallwatersplitting AT songhao moo2nanosheetsanchoredwithconanoparticlesasabifunctionalelectrocatalyticplatformforoverallwatersplitting AT lixingxing moo2nanosheetsanchoredwithconanoparticlesasabifunctionalelectrocatalyticplatformforoverallwatersplitting AT gongwenjie moo2nanosheetsanchoredwithconanoparticlesasabifunctionalelectrocatalyticplatformforoverallwatersplitting AT jiangxinyu moo2nanosheetsanchoredwithconanoparticlesasabifunctionalelectrocatalyticplatformforoverallwatersplitting AT javanbakhtmehran moo2nanosheetsanchoredwithconanoparticlesasabifunctionalelectrocatalyticplatformforoverallwatersplitting AT zhangxuming moo2nanosheetsanchoredwithconanoparticlesasabifunctionalelectrocatalyticplatformforoverallwatersplitting AT gaobiao moo2nanosheetsanchoredwithconanoparticlesasabifunctionalelectrocatalyticplatformforoverallwatersplitting AT chupaulk moo2nanosheetsanchoredwithconanoparticlesasabifunctionalelectrocatalyticplatformforoverallwatersplitting |