Improving the Efficiencies of Water Splitting and CO2 Electrolysis by Anodic O2 Bubble Management

Shusheng,Wan1; Huanlei,Zhang2; Ke,Ye3; Jieyang,Li2; Yucheng,He3; Xiaolin,Ge4; Tongwen,Xu4; Wen-Bin,Cai1; Meng,Lin2; Kun,Jiang1,3

2023-12-06

10.1021/acs.jpclett.3c02902

The Journal of Physical Chemistry Letters   影响因子和分区

1948-7185

1948-7185

This study systematically explores the impact of the anodic flow field design on the transport of O bubble and subsequent energy efficiency in electrolysis devices. Two distinct configurations, namely a conventional serpentine flow panel and an interdigitated flow panel, are integrated at the anode side of the electrolyzer. The interdigitated flow field exhibits superior performance in both alkaline water splitting and CO reduction despite the experience of an increased pressure drop. Numerical simulations reveal that the enhanced convective flow of the O bubbles induced by a forced anolyte flow through the porous electrode within the interdigitated panel design resulted in a 3 orders of magnitude increase in the level of the O bubble transport compared to the serpentine configuration. These findings not only underscore the significance of flow field design on bubble management but also provide a basis for advancing the electrolysis efficiency at industrial-level current densities.

SCI ; EI

英语

NI论文

共同第一 ; 通讯

American Chemical Society (ACS)

20235115251789

Carbon dioxide ; Electrodes ; Electrolytic cells ; Energy efficiency ; Flow fields ; Serpentine

Minerals:482.2 ; Energy Conservation:525.2 ; Fluid Flow, General:631.1 ; Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Inorganic Compounds:804.2

2-s2.0-85180005544

人工提交

1.Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China.
2.Department of Mechanical and Energy Engineering, SUSTech Energy Institute for Carbon Neutrality, Southern University of Science and Technology, Shenzhen 518055, China.
3.Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
4.Key Laboratory of Precision and Intelligent Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, China

Shusheng,Wan,Huanlei,Zhang,Ke,Ye,et al. Improving the Efficiencies of Water Splitting and CO2 Electrolysis by Anodic O2 Bubble Management[J]. The Journal of Physical Chemistry Letters,2023,14(49):11217-11223.

Shusheng,Wan.,Huanlei,Zhang.,Ke,Ye.,Jieyang,Li.,Yucheng,He.,...&Kun,Jiang.(2023).Improving the Efficiencies of Water Splitting and CO2 Electrolysis by Anodic O2 Bubble Management.The Journal of Physical Chemistry Letters,14(49),11217-11223.

Shusheng,Wan,et al."Improving the Efficiencies of Water Splitting and CO2 Electrolysis by Anodic O2 Bubble Management".The Journal of Physical Chemistry Letters 14.49(2023):11217-11223.