Journal
FRONTIERS IN CHEMISTRY
Volume 9, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fchem.2021.787787
Keywords
alkaline water electrolysis; hydrogen evolution reaction; electrode; complex structured material; nickel woven mesh; nickel expanded mesh
Categories
Funding
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea [20173010140890, 2019281010007A, 20203030040030, 20218520040040]
- Hydrogen Energy Innovation Technology Development Program of the National Research Foundation of Korea (NRF)
- Korean government (Ministry of Science and ICT(MSIT)) [NRF-2019M3E6A1064020]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20173010140890, 20203030040030] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Korea Institute of Energy Technology Evaluation & Planning (KETEP) [20218520040040] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
This study introduces a new parameter to determine the structural effect of mesh on HER performance, and finds that woven mesh and expanded mesh each have their advantages in terms of overpotential.
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available