FeCo<sub>2</sub>S<sub>4</sub>/Ni foam: A Bimetallic Sulfide Electrocatalyst with Efficient and Robust Behavior
The development of effective, feasible, stable, and inexpensive electrocatalysts has been a great challenge in the field of overall water splitting (WS). Herein, a bifunctional electrocatalyst (BF ECS), FeCo<sub>2</sub>S<sub>4</sub> nanowire (FCS NWs/Ni)/nickel (Ni) foam, wit...
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MDPI AG
2023-04-01
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| Online Access: | https://www.mdpi.com/2073-4352/13/5/717 |
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| author | Jiayou Tao Shuhua Liu Yanmo Liao Hui Qiao Yu Liu Hui Chen Min Teng Yong Wei Sanjie Liu Zongyi Qiu Chang Li Xiang Qi |
| author_facet | Jiayou Tao Shuhua Liu Yanmo Liao Hui Qiao Yu Liu Hui Chen Min Teng Yong Wei Sanjie Liu Zongyi Qiu Chang Li Xiang Qi |
| author_sort | Jiayou Tao |
| collection | DOAJ |
| description | The development of effective, feasible, stable, and inexpensive electrocatalysts has been a great challenge in the field of overall water splitting (WS). Herein, a bifunctional electrocatalyst (BF ECS), FeCo<sub>2</sub>S<sub>4</sub> nanowire (FCS NWs/Ni)/nickel (Ni) foam, with superior HER/OER activity and stability was designed and fabricated using a hydrothermal method. In addition, this efficient method can be used for the synthesis of other bimetallic MCo<sub>2</sub>S<sub>4</sub> sulfides (M = Cu, Zn, Mn, etc.). Electrochemical experiments showed the as-synthesized FCS NWs/Ni exhibited overpotentials of 350.5, 203.7, 115.97, and 62.6 mV (0.05, 0.1, 0.2, and 1 M KOH) at the current density of −10 mA cm<sup>−2</sup> for HER, including small overpotentials of 1.51, 1.36, 1.24, and 1.11 V (10 mA cm<sup>−2</sup>) in a 0.05, 0.1, 0.2, and 1 M KOH solution for OER. The FCS NWs/Ni has a splendid electrocatalytic performance which is related to the synergistic effect of cobalt, iron, and sulfur. Specifically, it has excellent electrical conductivity, a higher specific capacity, and a rich redox state of iron, cobalt, and sulfur elements. The results demonstrate a promising method for the design and fabrication of metal BF ECS for overall water splitting. |
| first_indexed | 2024-03-11T03:49:31Z |
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| id | doaj.art-3c6e276c3c17463a859e1ecaf549b7cf |
| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-03-11T03:49:31Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-3c6e276c3c17463a859e1ecaf549b7cf2023-11-18T00:58:51ZengMDPI AGCrystals2073-43522023-04-0113571710.3390/cryst13050717FeCo<sub>2</sub>S<sub>4</sub>/Ni foam: A Bimetallic Sulfide Electrocatalyst with Efficient and Robust BehaviorJiayou Tao0Shuhua Liu1Yanmo Liao2Hui Qiao3Yu Liu4Hui Chen5Min Teng6Yong Wei7Sanjie Liu8Zongyi Qiu9Chang Li10Xiang Qi11Key Laboratory of Hunan Province on Information Photonics and Freespace Optical Communications, School of Physics and Electrical Sciences, Hunan Institute of Science and Technology, Yueyang 414006, ChinaSchool of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, ChinaKey Laboratory of Hunan Province on Information Photonics and Freespace Optical Communications, School of Physics and Electrical Sciences, Hunan Institute of Science and Technology, Yueyang 414006, ChinaSchool of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, ChinaKey Laboratory of Hunan Province on Information Photonics and Freespace Optical Communications, School of Physics and Electrical Sciences, Hunan Institute of Science and Technology, Yueyang 414006, ChinaKey Laboratory of Hunan Province on Information Photonics and Freespace Optical Communications, School of Physics and Electrical Sciences, Hunan Institute of Science and Technology, Yueyang 414006, ChinaKey Laboratory of Hunan Province on Information Photonics and Freespace Optical Communications, School of Physics and Electrical Sciences, Hunan Institute of Science and Technology, Yueyang 414006, ChinaKey Laboratory of Hunan Province on Information Photonics and Freespace Optical Communications, School of Physics and Electrical Sciences, Hunan Institute of Science and Technology, Yueyang 414006, ChinaKey Laboratory of Hunan Province on Information Photonics and Freespace Optical Communications, School of Physics and Electrical Sciences, Hunan Institute of Science and Technology, Yueyang 414006, ChinaZhongKe (Guangdong) Refinery & Petrochemical Company Limited, Zhanjiang 524076, ChinaKey Laboratory of Hunan Province on Information Photonics and Freespace Optical Communications, School of Physics and Electrical Sciences, Hunan Institute of Science and Technology, Yueyang 414006, ChinaSchool of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, ChinaThe development of effective, feasible, stable, and inexpensive electrocatalysts has been a great challenge in the field of overall water splitting (WS). Herein, a bifunctional electrocatalyst (BF ECS), FeCo<sub>2</sub>S<sub>4</sub> nanowire (FCS NWs/Ni)/nickel (Ni) foam, with superior HER/OER activity and stability was designed and fabricated using a hydrothermal method. In addition, this efficient method can be used for the synthesis of other bimetallic MCo<sub>2</sub>S<sub>4</sub> sulfides (M = Cu, Zn, Mn, etc.). Electrochemical experiments showed the as-synthesized FCS NWs/Ni exhibited overpotentials of 350.5, 203.7, 115.97, and 62.6 mV (0.05, 0.1, 0.2, and 1 M KOH) at the current density of −10 mA cm<sup>−2</sup> for HER, including small overpotentials of 1.51, 1.36, 1.24, and 1.11 V (10 mA cm<sup>−2</sup>) in a 0.05, 0.1, 0.2, and 1 M KOH solution for OER. The FCS NWs/Ni has a splendid electrocatalytic performance which is related to the synergistic effect of cobalt, iron, and sulfur. Specifically, it has excellent electrical conductivity, a higher specific capacity, and a rich redox state of iron, cobalt, and sulfur elements. The results demonstrate a promising method for the design and fabrication of metal BF ECS for overall water splitting.https://www.mdpi.com/2073-4352/13/5/717FeCo<sub>2</sub>S<sub>4</sub>OERHERbifunctional electrocatalyst |
| spellingShingle | Jiayou Tao Shuhua Liu Yanmo Liao Hui Qiao Yu Liu Hui Chen Min Teng Yong Wei Sanjie Liu Zongyi Qiu Chang Li Xiang Qi FeCo<sub>2</sub>S<sub>4</sub>/Ni foam: A Bimetallic Sulfide Electrocatalyst with Efficient and Robust Behavior Crystals FeCo<sub>2</sub>S<sub>4</sub> OER HER bifunctional electrocatalyst |
| title | FeCo<sub>2</sub>S<sub>4</sub>/Ni foam: A Bimetallic Sulfide Electrocatalyst with Efficient and Robust Behavior |
| title_full | FeCo<sub>2</sub>S<sub>4</sub>/Ni foam: A Bimetallic Sulfide Electrocatalyst with Efficient and Robust Behavior |
| title_fullStr | FeCo<sub>2</sub>S<sub>4</sub>/Ni foam: A Bimetallic Sulfide Electrocatalyst with Efficient and Robust Behavior |
| title_full_unstemmed | FeCo<sub>2</sub>S<sub>4</sub>/Ni foam: A Bimetallic Sulfide Electrocatalyst with Efficient and Robust Behavior |
| title_short | FeCo<sub>2</sub>S<sub>4</sub>/Ni foam: A Bimetallic Sulfide Electrocatalyst with Efficient and Robust Behavior |
| title_sort | feco sub 2 sub s sub 4 sub ni foam a bimetallic sulfide electrocatalyst with efficient and robust behavior |
| topic | FeCo<sub>2</sub>S<sub>4</sub> OER HER bifunctional electrocatalyst |
| url | https://www.mdpi.com/2073-4352/13/5/717 |
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