Amorphous Ni–Fe–Mo Suboxides Coupled with Ni Network as Porous Nanoplate Array on Nickel Foam: A Highly Efficient and Durable Bifunctional Electrode for Overall Water Splitting
Abstract It is a great challenge to fabricate electrode with simultaneous high activity for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). Herein, a high‐performance bifunctional electrode formed by vertically depositing a porous nanoplate array on the surface of nick...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-04-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.201902034 |
| _version_ | 1819100645195513856 |
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| author | Yong‐Ke Li Geng Zhang Wang‐Ting Lu Fei‐Fei Cao |
| author_facet | Yong‐Ke Li Geng Zhang Wang‐Ting Lu Fei‐Fei Cao |
| author_sort | Yong‐Ke Li |
| collection | DOAJ |
| description | Abstract It is a great challenge to fabricate electrode with simultaneous high activity for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). Herein, a high‐performance bifunctional electrode formed by vertically depositing a porous nanoplate array on the surface of nickel foam is provided, where the nanoplate is made up by the interconnection of trinary Ni–Fe–Mo suboxides and Ni nanoparticles. The amorphous Ni–Fe–Mo suboxide and its in situ transformed amorphous Ni–Fe–Mo (oxy)hydroxide acts as the main active species for HER and OER, respectively. The conductive network built by Ni nanoparticles provides rapid electron transfer to active sites. Moreover, the hydrophilic and aerophobic electrode surface together with the hierarchical pore structure facilitate mass transfer. The corresponding water electrolyzer demonstrates low cell voltage (1.50 V @ 10 mA cm−2 and 1.63 V @ 100 mA cm−2) with high durability at 500 mA cm−2 for at least 100 h in 1 m KOH. |
| first_indexed | 2024-12-22T01:06:04Z |
| format | Article |
| id | doaj.art-0c332290c7dc40cfa97263bd301b1231 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-22T01:06:04Z |
| publishDate | 2020-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-0c332290c7dc40cfa97263bd301b12312022-12-21T18:44:04ZengWileyAdvanced Science2198-38442020-04-0177n/an/a10.1002/advs.201902034Amorphous Ni–Fe–Mo Suboxides Coupled with Ni Network as Porous Nanoplate Array on Nickel Foam: A Highly Efficient and Durable Bifunctional Electrode for Overall Water SplittingYong‐Ke Li0Geng Zhang1Wang‐Ting Lu2Fei‐Fei Cao3Department of Chemistry College of Science Huazhong Agricultural University 430070 Wuhan P. R. ChinaDepartment of Chemistry College of Science Huazhong Agricultural University 430070 Wuhan P. R. ChinaInstitute for Interdisciplinary Research Jianghan University 430056 Wuhan P. R. ChinaDepartment of Chemistry College of Science Huazhong Agricultural University 430070 Wuhan P. R. ChinaAbstract It is a great challenge to fabricate electrode with simultaneous high activity for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). Herein, a high‐performance bifunctional electrode formed by vertically depositing a porous nanoplate array on the surface of nickel foam is provided, where the nanoplate is made up by the interconnection of trinary Ni–Fe–Mo suboxides and Ni nanoparticles. The amorphous Ni–Fe–Mo suboxide and its in situ transformed amorphous Ni–Fe–Mo (oxy)hydroxide acts as the main active species for HER and OER, respectively. The conductive network built by Ni nanoparticles provides rapid electron transfer to active sites. Moreover, the hydrophilic and aerophobic electrode surface together with the hierarchical pore structure facilitate mass transfer. The corresponding water electrolyzer demonstrates low cell voltage (1.50 V @ 10 mA cm−2 and 1.63 V @ 100 mA cm−2) with high durability at 500 mA cm−2 for at least 100 h in 1 m KOH.https://doi.org/10.1002/advs.201902034hierarchical porosityhydrogen evolution reactionoxideoxygen evolution reactionoxygen vacancy |
| spellingShingle | Yong‐Ke Li Geng Zhang Wang‐Ting Lu Fei‐Fei Cao Amorphous Ni–Fe–Mo Suboxides Coupled with Ni Network as Porous Nanoplate Array on Nickel Foam: A Highly Efficient and Durable Bifunctional Electrode for Overall Water Splitting Advanced Science hierarchical porosity hydrogen evolution reaction oxide oxygen evolution reaction oxygen vacancy |
| title | Amorphous Ni–Fe–Mo Suboxides Coupled with Ni Network as Porous Nanoplate Array on Nickel Foam: A Highly Efficient and Durable Bifunctional Electrode for Overall Water Splitting |
| title_full | Amorphous Ni–Fe–Mo Suboxides Coupled with Ni Network as Porous Nanoplate Array on Nickel Foam: A Highly Efficient and Durable Bifunctional Electrode for Overall Water Splitting |
| title_fullStr | Amorphous Ni–Fe–Mo Suboxides Coupled with Ni Network as Porous Nanoplate Array on Nickel Foam: A Highly Efficient and Durable Bifunctional Electrode for Overall Water Splitting |
| title_full_unstemmed | Amorphous Ni–Fe–Mo Suboxides Coupled with Ni Network as Porous Nanoplate Array on Nickel Foam: A Highly Efficient and Durable Bifunctional Electrode for Overall Water Splitting |
| title_short | Amorphous Ni–Fe–Mo Suboxides Coupled with Ni Network as Porous Nanoplate Array on Nickel Foam: A Highly Efficient and Durable Bifunctional Electrode for Overall Water Splitting |
| title_sort | amorphous ni fe mo suboxides coupled with ni network as porous nanoplate array on nickel foam a highly efficient and durable bifunctional electrode for overall water splitting |
| topic | hierarchical porosity hydrogen evolution reaction oxide oxygen evolution reaction oxygen vacancy |
| url | https://doi.org/10.1002/advs.201902034 |
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