Discharge performance of solid-state oxygen shuttle metal-air battery using Ca-stabilized ZrO<inf>2</inf> electrolyte
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- Discharge performance of solid-state oxygen shuttle metal-air battery using Ca-stabilized ZrO2</inf> electrolyte
- Inoishi, Atsushi; Kim, Hack-Ho; Sakai, Takaai; Ju, Young-Wan; Ida, Shintaro; Ishihara, Tatsumi
- Issue Date
- WILEY-V C H VERLAG GMBH
- CHEMSUSCHEM, v.8, no.7, pp.1264 - 1269
- The effects of metal choice on the electrochemical performance of oxygen-shuttle metal-air batteries with Ca-stabilized ZrO2</inf> (CSZ) as the electrolyte and various metals as the anodes were studied at 1073 K. The equilibrium oxygen partial pressure (PO2</inf>) in the anode chamber was governed by the metal used in the anode chamber. A lower-PO2</inf> environment in the anode decreased the polarization resistance of the anode. The oxidation of oxide ions to oxygen in the anode is drastically enhanced by the n-type conduction generated in the CSZ electrolyte when it is exposed to a reducing atmosphere. A high discharge potential and high capacity can be achieved in an oxygen-shuttle battery with a Li or Mg anode because of the fast anode reaction compared to that of cells with a Zn, Fe, or Sn anode. However, only the mildly reducing metals (Zn, Si, Fe, and Sn) can potentially be used in rechargeable metal-air batteries because the transport number of the CSZ electrolyte must be unity during charge and discharge. Oxygen shuttle rechargeable batteries with Fe, and Sn electrodes are demonstrated. ⓒ 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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