Rechargeable aqueous Na-air batteries: Highly improved voltage efficiency by use of catalysts
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- Rechargeable aqueous Na-air batteries: Highly improved voltage efficiency by use of catalysts
- Sahgong, Sun Hye; Senthilkumar, S.T.; Kim, Kyoungho; Hwang, Soo Min; Kim, Youngsik
- Issue Date
- ELSEVIER SCIENCE INC
- ELECTROCHEMISTRY COMMUNICATIONS, v.61, pp.53 - 66
- The first rechargeable aqueous Na-air battery has been fabricated, and its electrochemical properties and reversibility are reported herein. The charge-discharge properties of the battery were tested using both Vulcan XC72R- and Pt/C-coated carbon paper as the air electrode. Pt/C-coated carbon paper exhibited a voltage efficiency of 84.3%, whereas, for Vulcan XC72R-coated carbon paper and uncoated carbon paper, the observed efficiencies were 78.0% and 72.4%, respectively. Use of Pt/C-coated carbon paper led to a high and stable discharging voltage of 2.85 V. The reported rechargeable aqueous Na-air battery is a potential candidate for high energy density batteries in the future.
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