Porous Bilayer Electrode‐Guided Gas Diffusion for Enhanced CO2 Electrochemical Reduction
Comparing with the massive efforts in developing innovative catalyst materials system and technologies, structural design of cells has attracted less attention on the road toward high‐performance electrochemical CO2 reduction reaction (eCO2RR). Herein, a hybrid gas diffusion electrode‐based reaction...
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Wiley-VCH
2021
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oai:doaj.org-article:aefa9f7739e64f2c96db4cbc7436bd562021-11-04T09:03:08ZPorous Bilayer Electrode‐Guided Gas Diffusion for Enhanced CO2 Electrochemical Reduction2699-941210.1002/aesr.202100083https://doaj.org/article/aefa9f7739e64f2c96db4cbc7436bd562021-11-01T00:00:00Zhttps://doi.org/10.1002/aesr.202100083https://doaj.org/toc/2699-9412Comparing with the massive efforts in developing innovative catalyst materials system and technologies, structural design of cells has attracted less attention on the road toward high‐performance electrochemical CO2 reduction reaction (eCO2RR). Herein, a hybrid gas diffusion electrode‐based reaction cell is proposed using highly porous carbon paper (CP) and graphene aerogels (GAs), which is expected to offer directional diffusion of gas molecules onto the catalyst bed, to sustain a high performance in CO2 conversion. The above‐mentioned hypothesis is supported by the experimental and simulation results, which show that the CP + GA combined configuration increases the Faraday efficiency (FE) from ≈60% to over 94% toward carbon monoxide (CO) and formate production compared with a CP only cell with Cu2O as the catalyst. It also suppresses the undesirable side reaction–hydrogen evolution over 65 times than the conventional H‐type cell (H‐cell). By combining with advanced catalysts with high selectivity, a 100% FE of the cell with a high current density can be realized. The described strategy sheds an extra light on future development of eCO2RR with a structural design of cell‐enabled high CO2 conversion.Yucheng WangHanhui LeiHang XiangYongqing FuChenxi XuYinzhu JiangBen Bin XuEileen Hao YuChao GaoTerence Xiaoteng LiuWiley-VCHarticleCO2 reduction reactiongas diffusion electrodesgraphene aerogelsmass transferEnvironmental technology. Sanitary engineeringTD1-1066Renewable energy sourcesTJ807-830ENAdvanced Energy & Sustainability Research, Vol 2, Iss 11, Pp n/a-n/a (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
CO2 reduction reaction gas diffusion electrodes graphene aerogels mass transfer Environmental technology. Sanitary engineering TD1-1066 Renewable energy sources TJ807-830 |
| spellingShingle |
CO2 reduction reaction gas diffusion electrodes graphene aerogels mass transfer Environmental technology. Sanitary engineering TD1-1066 Renewable energy sources TJ807-830 Yucheng Wang Hanhui Lei Hang Xiang Yongqing Fu Chenxi Xu Yinzhu Jiang Ben Bin Xu Eileen Hao Yu Chao Gao Terence Xiaoteng Liu Porous Bilayer Electrode‐Guided Gas Diffusion for Enhanced CO2 Electrochemical Reduction |
| description |
Comparing with the massive efforts in developing innovative catalyst materials system and technologies, structural design of cells has attracted less attention on the road toward high‐performance electrochemical CO2 reduction reaction (eCO2RR). Herein, a hybrid gas diffusion electrode‐based reaction cell is proposed using highly porous carbon paper (CP) and graphene aerogels (GAs), which is expected to offer directional diffusion of gas molecules onto the catalyst bed, to sustain a high performance in CO2 conversion. The above‐mentioned hypothesis is supported by the experimental and simulation results, which show that the CP + GA combined configuration increases the Faraday efficiency (FE) from ≈60% to over 94% toward carbon monoxide (CO) and formate production compared with a CP only cell with Cu2O as the catalyst. It also suppresses the undesirable side reaction–hydrogen evolution over 65 times than the conventional H‐type cell (H‐cell). By combining with advanced catalysts with high selectivity, a 100% FE of the cell with a high current density can be realized. The described strategy sheds an extra light on future development of eCO2RR with a structural design of cell‐enabled high CO2 conversion. |
| format |
article |
| author |
Yucheng Wang Hanhui Lei Hang Xiang Yongqing Fu Chenxi Xu Yinzhu Jiang Ben Bin Xu Eileen Hao Yu Chao Gao Terence Xiaoteng Liu |
| author_facet |
Yucheng Wang Hanhui Lei Hang Xiang Yongqing Fu Chenxi Xu Yinzhu Jiang Ben Bin Xu Eileen Hao Yu Chao Gao Terence Xiaoteng Liu |
| author_sort |
Yucheng Wang |
| title |
Porous Bilayer Electrode‐Guided Gas Diffusion for Enhanced CO2 Electrochemical Reduction |
| title_short |
Porous Bilayer Electrode‐Guided Gas Diffusion for Enhanced CO2 Electrochemical Reduction |
| title_full |
Porous Bilayer Electrode‐Guided Gas Diffusion for Enhanced CO2 Electrochemical Reduction |
| title_fullStr |
Porous Bilayer Electrode‐Guided Gas Diffusion for Enhanced CO2 Electrochemical Reduction |
| title_full_unstemmed |
Porous Bilayer Electrode‐Guided Gas Diffusion for Enhanced CO2 Electrochemical Reduction |
| title_sort |
porous bilayer electrode‐guided gas diffusion for enhanced co2 electrochemical reduction |
| publisher |
Wiley-VCH |
| publishDate |
2021 |
| url |
https://doaj.org/article/aefa9f7739e64f2c96db4cbc7436bd56 |
| work_keys_str_mv |
AT yuchengwang porousbilayerelectrodeguidedgasdiffusionforenhancedco2electrochemicalreduction AT hanhuilei porousbilayerelectrodeguidedgasdiffusionforenhancedco2electrochemicalreduction AT hangxiang porousbilayerelectrodeguidedgasdiffusionforenhancedco2electrochemicalreduction AT yongqingfu porousbilayerelectrodeguidedgasdiffusionforenhancedco2electrochemicalreduction AT chenxixu porousbilayerelectrodeguidedgasdiffusionforenhancedco2electrochemicalreduction AT yinzhujiang porousbilayerelectrodeguidedgasdiffusionforenhancedco2electrochemicalreduction AT benbinxu porousbilayerelectrodeguidedgasdiffusionforenhancedco2electrochemicalreduction AT eileenhaoyu porousbilayerelectrodeguidedgasdiffusionforenhancedco2electrochemicalreduction AT chaogao porousbilayerelectrodeguidedgasdiffusionforenhancedco2electrochemicalreduction AT terencexiaotengliu porousbilayerelectrodeguidedgasdiffusionforenhancedco2electrochemicalreduction |
| _version_ |
1718444983792435200 |