Facile Construction of Three-Dimensional Heterostructured CuCo<sub>2</sub>S<sub>4</sub> Bifunctional Catalyst for Alkaline Water Electrolysis
Developing an efficient multi-functional electrocatalyst with high efficiency and low cost to replace noble metals is significantly crucial for the industrial water electrolysis process and for producing sustainable green hydrogen (H<sub>2</sub>) fuel. Herein, ultrathin CuCo<sub>2&...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-05-01
|
| Series: | Catalysts |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4344/13/5/881 |
| _version_ | 1797600734980603904 |
|---|---|
| author | Shengnan Li Pengli Ma Jishuang Yang Srinivasan Krishnan Kannan S. Kesavan Ruimin Xing Shanhu Liu |
| author_facet | Shengnan Li Pengli Ma Jishuang Yang Srinivasan Krishnan Kannan S. Kesavan Ruimin Xing Shanhu Liu |
| author_sort | Shengnan Li |
| collection | DOAJ |
| description | Developing an efficient multi-functional electrocatalyst with high efficiency and low cost to replace noble metals is significantly crucial for the industrial water electrolysis process and for producing sustainable green hydrogen (H<sub>2</sub>) fuel. Herein, ultrathin CuCo<sub>2</sub>S<sub>4</sub> nanosheets assembled into highly open three-dimensional (3D) nanospheres of CuCo<sub>2</sub>S<sub>4</sub> (Cu/Co = 33:67) were prepared by a facile one-pot solvothermal approach and utilized as a bifunctional electrocatalyst for efficient overall water splitting. The as-prepared CuCo<sub>2</sub>S<sub>4</sub> is characterized structurally and morphologically; the BET surface area of the CuCo<sub>2</sub>S<sub>4</sub> (Cu/Co = 33:67) catalyst was found to have a larger specific surface area (21.783 m<sup>2</sup>g<sup>−1</sup>) than that of other catalysts with a Cu/Co ratio of 67:33, 50:50, and 20:80. Benefiting from a highly open structure and ultrathin nanosheets with excellent exposure to catalytically active sites, CuCo<sub>2</sub>S<sub>4</sub> (Cu/Co = 33:67) is identified as an efficient catalyst for the proton reduction and oxygen evolution reactions in 1 M KOH with an overpotential of 182 and 274 mV at 10 mA cm<sup>−2</sup>, respectively. As expected, a low cell voltage of 1.68 V delivers a current density of 10 mA cm<sup>−2</sup>. Stability and durability are also greatly enhanced under harsh alkaline conditions. Therefore, this work provides a simple strategy for the rational design of spinel-based transition metal sulfide catalysts for electrocatalysis. |
| first_indexed | 2024-03-11T03:52:04Z |
| format | Article |
| id | doaj.art-cbe7ea043e55494c91ca2a3b53c2d002 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-11T03:52:04Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-cbe7ea043e55494c91ca2a3b53c2d0022023-11-18T00:51:38ZengMDPI AGCatalysts2073-43442023-05-0113588110.3390/catal13050881Facile Construction of Three-Dimensional Heterostructured CuCo<sub>2</sub>S<sub>4</sub> Bifunctional Catalyst for Alkaline Water ElectrolysisShengnan Li0Pengli Ma1Jishuang Yang2Srinivasan Krishnan3Kannan S. Kesavan4Ruimin Xing5Shanhu Liu6Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, ChinaHenan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, ChinaHenan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, ChinaHenan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, ChinaHenan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, ChinaHenan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, ChinaHenan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, ChinaDeveloping an efficient multi-functional electrocatalyst with high efficiency and low cost to replace noble metals is significantly crucial for the industrial water electrolysis process and for producing sustainable green hydrogen (H<sub>2</sub>) fuel. Herein, ultrathin CuCo<sub>2</sub>S<sub>4</sub> nanosheets assembled into highly open three-dimensional (3D) nanospheres of CuCo<sub>2</sub>S<sub>4</sub> (Cu/Co = 33:67) were prepared by a facile one-pot solvothermal approach and utilized as a bifunctional electrocatalyst for efficient overall water splitting. The as-prepared CuCo<sub>2</sub>S<sub>4</sub> is characterized structurally and morphologically; the BET surface area of the CuCo<sub>2</sub>S<sub>4</sub> (Cu/Co = 33:67) catalyst was found to have a larger specific surface area (21.783 m<sup>2</sup>g<sup>−1</sup>) than that of other catalysts with a Cu/Co ratio of 67:33, 50:50, and 20:80. Benefiting from a highly open structure and ultrathin nanosheets with excellent exposure to catalytically active sites, CuCo<sub>2</sub>S<sub>4</sub> (Cu/Co = 33:67) is identified as an efficient catalyst for the proton reduction and oxygen evolution reactions in 1 M KOH with an overpotential of 182 and 274 mV at 10 mA cm<sup>−2</sup>, respectively. As expected, a low cell voltage of 1.68 V delivers a current density of 10 mA cm<sup>−2</sup>. Stability and durability are also greatly enhanced under harsh alkaline conditions. Therefore, this work provides a simple strategy for the rational design of spinel-based transition metal sulfide catalysts for electrocatalysis.https://www.mdpi.com/2073-4344/13/5/881alkaline water electrolysissolvothermalCuCo<sub>2</sub>S<sub>4</sub>electrocatalysthydrogen evolution reactionoxygen evolution reaction |
| spellingShingle | Shengnan Li Pengli Ma Jishuang Yang Srinivasan Krishnan Kannan S. Kesavan Ruimin Xing Shanhu Liu Facile Construction of Three-Dimensional Heterostructured CuCo<sub>2</sub>S<sub>4</sub> Bifunctional Catalyst for Alkaline Water Electrolysis Catalysts alkaline water electrolysis solvothermal CuCo<sub>2</sub>S<sub>4</sub> electrocatalyst hydrogen evolution reaction oxygen evolution reaction |
| title | Facile Construction of Three-Dimensional Heterostructured CuCo<sub>2</sub>S<sub>4</sub> Bifunctional Catalyst for Alkaline Water Electrolysis |
| title_full | Facile Construction of Three-Dimensional Heterostructured CuCo<sub>2</sub>S<sub>4</sub> Bifunctional Catalyst for Alkaline Water Electrolysis |
| title_fullStr | Facile Construction of Three-Dimensional Heterostructured CuCo<sub>2</sub>S<sub>4</sub> Bifunctional Catalyst for Alkaline Water Electrolysis |
| title_full_unstemmed | Facile Construction of Three-Dimensional Heterostructured CuCo<sub>2</sub>S<sub>4</sub> Bifunctional Catalyst for Alkaline Water Electrolysis |
| title_short | Facile Construction of Three-Dimensional Heterostructured CuCo<sub>2</sub>S<sub>4</sub> Bifunctional Catalyst for Alkaline Water Electrolysis |
| title_sort | facile construction of three dimensional heterostructured cuco sub 2 sub s sub 4 sub bifunctional catalyst for alkaline water electrolysis |
| topic | alkaline water electrolysis solvothermal CuCo<sub>2</sub>S<sub>4</sub> electrocatalyst hydrogen evolution reaction oxygen evolution reaction |
| url | https://www.mdpi.com/2073-4344/13/5/881 |
| work_keys_str_mv | AT shengnanli facileconstructionofthreedimensionalheterostructuredcucosub2subssub4subbifunctionalcatalystforalkalinewaterelectrolysis AT penglima facileconstructionofthreedimensionalheterostructuredcucosub2subssub4subbifunctionalcatalystforalkalinewaterelectrolysis AT jishuangyang facileconstructionofthreedimensionalheterostructuredcucosub2subssub4subbifunctionalcatalystforalkalinewaterelectrolysis AT srinivasankrishnan facileconstructionofthreedimensionalheterostructuredcucosub2subssub4subbifunctionalcatalystforalkalinewaterelectrolysis AT kannanskesavan facileconstructionofthreedimensionalheterostructuredcucosub2subssub4subbifunctionalcatalystforalkalinewaterelectrolysis AT ruiminxing facileconstructionofthreedimensionalheterostructuredcucosub2subssub4subbifunctionalcatalystforalkalinewaterelectrolysis AT shanhuliu facileconstructionofthreedimensionalheterostructuredcucosub2subssub4subbifunctionalcatalystforalkalinewaterelectrolysis |