Solid-state Al-air battery with an ethanol gel electrolyte
Hydrogel electrolyte is especially suitable for solid-state Al-air batteries targeted for various portable applications, which may, however, lead to continuous Al corrosion during battery standby. To tackle this issue, an ethanol gel electrolyte is developed for Al-air battery for the first time in...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-08-01
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| Series: | Green Energy & Environment |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468025721001126 |
| _version_ | 1827906373383356416 |
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| author | Yifei Wang Wending Pan Kee Wah Leong Shijing Luo Xiaolong Zhao Dennis Y.C. Leung |
| author_facet | Yifei Wang Wending Pan Kee Wah Leong Shijing Luo Xiaolong Zhao Dennis Y.C. Leung |
| author_sort | Yifei Wang |
| collection | DOAJ |
| description | Hydrogel electrolyte is especially suitable for solid-state Al-air batteries targeted for various portable applications, which may, however, lead to continuous Al corrosion during battery standby. To tackle this issue, an ethanol gel electrolyte is developed for Al-air battery for the first time in this work, by using KOH as solute and polyethylene oxide as gelling agent. The ethanol gel is found to effectively inhibit Al corrosion compared with the water gel counterpart, leading to stable Al storage. When assembled into an Al-air battery, the ethanol gel electrolyte achieves a much improved discharge lifetime and specific capacity, which are 5.3 and 4.1 times of the water gel electrolyte at 0.1 mA cm−2, respectively. By studying the gel properties, it is found that a lower ethanol purity can improve the battery power output, but at the price of decreased discharge efficiency. On the contrary, a higher polymer concentration will decrease the power output, but can bring extra benefit to the discharge efficiency. As for the gel thickness, a moderate value of 1 mm is preferred to balance the power output and energy efficiency. Finally, to cater the increasing market of flexible electronics, a flexible Al-air battery is developed by impregnating the ethanol gel into a paper substrate, which can function normally even under serious deformation or damage. |
| first_indexed | 2024-03-13T00:55:32Z |
| format | Article |
| id | doaj.art-d2cfc9167ad54f90a9a1f10fbd3e2772 |
| institution | Directory Open Access Journal |
| issn | 2468-0257 |
| language | English |
| last_indexed | 2024-03-13T00:55:32Z |
| publishDate | 2023-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Green Energy & Environment |
| spelling | doaj.art-d2cfc9167ad54f90a9a1f10fbd3e27722023-07-07T04:27:38ZengKeAi Communications Co., Ltd.Green Energy & Environment2468-02572023-08-018411171127Solid-state Al-air battery with an ethanol gel electrolyteYifei Wang0Wending Pan1Kee Wah Leong2Shijing Luo3Xiaolong Zhao4Dennis Y.C. Leung5School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, China; Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China; Corresponding authors.Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, ChinaDepartment of Mechanical Engineering, The University of Hong Kong, Hong Kong, ChinaDepartment of Mechanical Engineering, The University of Hong Kong, Hong Kong, ChinaDepartment of Mechanical Engineering, The University of Hong Kong, Hong Kong, ChinaDepartment of Mechanical Engineering, The University of Hong Kong, Hong Kong, China; Corresponding authors.Hydrogel electrolyte is especially suitable for solid-state Al-air batteries targeted for various portable applications, which may, however, lead to continuous Al corrosion during battery standby. To tackle this issue, an ethanol gel electrolyte is developed for Al-air battery for the first time in this work, by using KOH as solute and polyethylene oxide as gelling agent. The ethanol gel is found to effectively inhibit Al corrosion compared with the water gel counterpart, leading to stable Al storage. When assembled into an Al-air battery, the ethanol gel electrolyte achieves a much improved discharge lifetime and specific capacity, which are 5.3 and 4.1 times of the water gel electrolyte at 0.1 mA cm−2, respectively. By studying the gel properties, it is found that a lower ethanol purity can improve the battery power output, but at the price of decreased discharge efficiency. On the contrary, a higher polymer concentration will decrease the power output, but can bring extra benefit to the discharge efficiency. As for the gel thickness, a moderate value of 1 mm is preferred to balance the power output and energy efficiency. Finally, to cater the increasing market of flexible electronics, a flexible Al-air battery is developed by impregnating the ethanol gel into a paper substrate, which can function normally even under serious deformation or damage.http://www.sciencedirect.com/science/article/pii/S2468025721001126Al-air batteryGel electrolyteEthanol gelAl corrosionPolyethylene oxide |
| spellingShingle | Yifei Wang Wending Pan Kee Wah Leong Shijing Luo Xiaolong Zhao Dennis Y.C. Leung Solid-state Al-air battery with an ethanol gel electrolyte Green Energy & Environment Al-air battery Gel electrolyte Ethanol gel Al corrosion Polyethylene oxide |
| title | Solid-state Al-air battery with an ethanol gel electrolyte |
| title_full | Solid-state Al-air battery with an ethanol gel electrolyte |
| title_fullStr | Solid-state Al-air battery with an ethanol gel electrolyte |
| title_full_unstemmed | Solid-state Al-air battery with an ethanol gel electrolyte |
| title_short | Solid-state Al-air battery with an ethanol gel electrolyte |
| title_sort | solid state al air battery with an ethanol gel electrolyte |
| topic | Al-air battery Gel electrolyte Ethanol gel Al corrosion Polyethylene oxide |
| url | http://www.sciencedirect.com/science/article/pii/S2468025721001126 |
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