The Structural Effect of Electrode Mesh on Hydrogen Evolution Reaction Performance for Alkaline Water Electrolysis
Alkaline water electrolysis (AWE) is a mature water electrolysis technology that can produce green hydrogen most economically. This is mainly attributed to the use of Ni-based materials that are easy to process and inexpensive. The nickel-based meshes with various structures such as woven mesh and e...
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2021
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oai:doaj.org-article:307a6b8577274a808c762cca19f06c622021-11-19T05:59:10ZThe Structural Effect of Electrode Mesh on Hydrogen Evolution Reaction Performance for Alkaline Water Electrolysis2296-264610.3389/fchem.2021.787787https://doaj.org/article/307a6b8577274a808c762cca19f06c622021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fchem.2021.787787/fullhttps://doaj.org/toc/2296-2646Alkaline water electrolysis (AWE) is a mature water electrolysis technology that can produce green hydrogen most economically. This is mainly attributed to the use of Ni-based materials that are easy to process and inexpensive. The nickel-based meshes with various structures such as woven mesh and expanded mesh are widely used as electrode in the AWE due to its common availability and easy fabrication. However, the morphological effect of meshes on hydrogen evolution reaction (HER) performance has not been studied. Here a new parameter to determine the structural effect of mesh on HER performance was first proposed. The key factors of the parameter were found to be the strand width, pore width and the strand surface area. The woven mesh with the ratio of pore width to strand width that converges to 1 showed the lowest the overpotential. The expanded mesh with the higher the structural surface area exhibited the lowest the overpotential. This study will help to choose an optimal structure for the mesh with the HER electrode.Hae In LeeHae In LeeHyun-Seok ChoMinJoong KimJae Hun LeeChangSoo LeeSechan LeeSang-Kyung KimSang-Kyung KimChang-Hee KimKwang Bok YiKwang Bok YiWon-Chul ChoWon-Chul ChoFrontiers Media S.A.articlealkaline water electrolysishydrogen evolution reactionelectrodecomplex structured materialnickel woven meshnickel expanded meshChemistryQD1-999ENFrontiers in Chemistry, Vol 9 (2021) |
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alkaline water electrolysis hydrogen evolution reaction electrode complex structured material nickel woven mesh nickel expanded mesh Chemistry QD1-999 |
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alkaline water electrolysis hydrogen evolution reaction electrode complex structured material nickel woven mesh nickel expanded mesh Chemistry QD1-999 Hae In Lee Hae In Lee Hyun-Seok Cho MinJoong Kim Jae Hun Lee ChangSoo Lee Sechan Lee Sang-Kyung Kim Sang-Kyung Kim Chang-Hee Kim Kwang Bok Yi Kwang Bok Yi Won-Chul Cho Won-Chul Cho The Structural Effect of Electrode Mesh on Hydrogen Evolution Reaction Performance for Alkaline Water Electrolysis |
| description |
Alkaline water electrolysis (AWE) is a mature water electrolysis technology that can produce green hydrogen most economically. This is mainly attributed to the use of Ni-based materials that are easy to process and inexpensive. The nickel-based meshes with various structures such as woven mesh and expanded mesh are widely used as electrode in the AWE due to its common availability and easy fabrication. However, the morphological effect of meshes on hydrogen evolution reaction (HER) performance has not been studied. Here a new parameter to determine the structural effect of mesh on HER performance was first proposed. The key factors of the parameter were found to be the strand width, pore width and the strand surface area. The woven mesh with the ratio of pore width to strand width that converges to 1 showed the lowest the overpotential. The expanded mesh with the higher the structural surface area exhibited the lowest the overpotential. This study will help to choose an optimal structure for the mesh with the HER electrode. |
| format |
article |
| author |
Hae In Lee Hae In Lee Hyun-Seok Cho MinJoong Kim Jae Hun Lee ChangSoo Lee Sechan Lee Sang-Kyung Kim Sang-Kyung Kim Chang-Hee Kim Kwang Bok Yi Kwang Bok Yi Won-Chul Cho Won-Chul Cho |
| author_facet |
Hae In Lee Hae In Lee Hyun-Seok Cho MinJoong Kim Jae Hun Lee ChangSoo Lee Sechan Lee Sang-Kyung Kim Sang-Kyung Kim Chang-Hee Kim Kwang Bok Yi Kwang Bok Yi Won-Chul Cho Won-Chul Cho |
| author_sort |
Hae In Lee |
| title |
The Structural Effect of Electrode Mesh on Hydrogen Evolution Reaction Performance for Alkaline Water Electrolysis |
| title_short |
The Structural Effect of Electrode Mesh on Hydrogen Evolution Reaction Performance for Alkaline Water Electrolysis |
| title_full |
The Structural Effect of Electrode Mesh on Hydrogen Evolution Reaction Performance for Alkaline Water Electrolysis |
| title_fullStr |
The Structural Effect of Electrode Mesh on Hydrogen Evolution Reaction Performance for Alkaline Water Electrolysis |
| title_full_unstemmed |
The Structural Effect of Electrode Mesh on Hydrogen Evolution Reaction Performance for Alkaline Water Electrolysis |
| title_sort |
structural effect of electrode mesh on hydrogen evolution reaction performance for alkaline water electrolysis |
| publisher |
Frontiers Media S.A. |
| publishDate |
2021 |
| url |
https://doaj.org/article/307a6b8577274a808c762cca19f06c62 |
| work_keys_str_mv |
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