亜鉛空気電池
Zinc-Air Battery
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亜鉛空気電池の研究概要/Reserch of Zinc-Air battery
亜鉛空気電池は，正極に空気，負極に金属亜鉛を使用し，リチウムイオン電池を大きく上回る高容量かつ軽量な電池です．しかし，現在の亜鉛空気電池は充電が難しく，充電式電池として実用化されていません．本研究では，X線計測を用いて充電時に発生する問題を解明し，大容量で軽量な二次電池の実現を目指しています．
Zinc-air batteries use air as the cathode and metallic zinc as the anode, offering significantly higher capacity and lighter weight than lithium-ion batteries. However, current zinc-air batteries are difficult to recharge, preventing their practical use as rechargeable batteries. This research aims to address this issue by using X-ray measurements to analyze problems that occur during charging, with the goal of developing high-capacity, lightweight secondary batteries.
代表的な研究論文発表/Representative Research Papers
亜鉛空気電池の充放電過程の
オペランドX線計測
亜鉛空気電池を対象に，高速充放電時の電池内部挙動をオペランド透過X線イメージングにより計測しました．放電時のバブルの発生や，充電時のバブル発生とデンドライト成長の観察に成功し，充放電電圧との関係を明らかにしました．また，充電時にデンドライト成長を引き起こす条件を明らかにしました．
The internal behavior of a zinc-air battery during high-speed charging and discharging was measured by operando transmission X-ray imaging. Bubble generation during discharge and bubble generation and dendrite growth during charging were successfully observed, and the relationship between the charge and discharge voltages was clarified. The conditions that cause dendrite growth during charging were also clarified.
Operando X-Ray Imaging of the Charge-Discharge Behavior of Zinc-Air Batteries
Wooseok KANG, Shumpei KUBOTA, Manabu KODAMA, Atsunori IKEZAWA, Hajime ARAI, Shuichiro HIRAI
Electrochemistry
https://doi.org/10.5796/electrochemistry.24-00053
流動型亜鉛空気電池の
オペランドX線計測
亜鉛空気電池では，高負荷充電時に亜鉛極で水素発生とデンドライト成長をしてしまい，電池性能が低下することが知られています．その解決方法として，電解液を流動させる亜鉛空気電池(フロー型亜鉛空気電池)が提案されています．本研究では，フロー型亜鉛空気電池を対象にX線透過撮影を実施し，電解液流動が水素発生やデンドライト成長に及ぼす影響を明らかにしました．
In zinc-air batteries, hydrogen generation and dendrite growth at the zinc electrode under high charge loads are known to degrade battery performance. As a solution to this problem, a zinc-air battery with flowing electrolyte (flow-type zinc-air battery) has been proposed. In this study, X-ray transmission imaging of a flow-type zinc-air battery was conducted to clarify the effects of electrolyte flow on hydrogen evolution and dendrite growth.
フロー型亜鉛空気電池の負極オペランドX線イメージング
久保田 峻平, KANG Wooseok, 兒玉 学, 池澤 篤憲, 荒井 創, 平井 秀一郎
日本機械学会論文集
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