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タイトル: | A room-temperature molten hydrate electrolyte for rechargeable zinc–air batteries |
著者: | Chen, Chih‐Yao Matsumoto, Kazuhiko https://orcid.org/0000-0002-0770-9210 (unconfirmed) Kubota, Keigo Hagiwara, Rika https://orcid.org/0000-0002-7234-3980 (unconfirmed) Xu, Qiang |
著者名の別形: | 松本, 一彦 萩原, 理加 |
キーワード: | aqueous batteries ionic liquids molten hydrates zinc anodes zinc–air batteries |
発行日: | 12-Jun-2019 |
出版者: | Wiley |
誌名: | Advanced Energy Materials |
巻: | 9 |
号: | 22 |
論文番号: | 1900196 |
抄録: | Aqueous Zn‐based batteries are attracting extensive interest because of their economic feasibility and potentially high energy density. However, poor rechargeability of Zn anode in conventional electrolytes resulting from dendrite formation and self‐corrosion hinders their practical implementation. Herein, a Zn molten hydrate composed of inorganic Zn salt and water is demonstrated as an advantageous electrolyte for solving these issues. In this electrolyte, dendrite‐free Zn deposition/dissolution reaction with a high Coulombic efficiency (≈99%) as well as long‐term stability, free from CO₂ poisoning are realized. The resultant Zn–air cell exhibits a reversible capacity of 1000 mAh g(catalyst)⁻¹ over 100 cycles at 30 °C. Combined with the intrinsic safety associated with aqueous chemistry and cost benefit of the raw material, the present Zn–air battery makes a strong candidate for large‐scale energy storage. |
著作権等: | This is the peer reviewed version of the following article: Chen, C.‐Y., Matsumoto, K., Kubota, K., Hagiwara, R., Xu, Q., A Room‐Temperature Molten Hydrate Electrolyte for Rechargeable Zinc–Air Batteries. Adv. Energy Mater. 2019, 9, 1900196., which has been published in final form at https://doi.org/10.1002/aenm.201900196. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. The full-text file will be made open to the public on 12 June 2020 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/243219 |
DOI(出版社版): | 10.1002/aenm.201900196 |
出現コレクション: | 学術雑誌掲載論文等 |
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