A high-energy-density mixed-aprotic-aqueous sodium-air cell with a ceramic separator and a porous carbon electrode

Feng Liang; Katsuro Hayashi

doi:10.1149/2.0421507jes

A high-energy-density mixed-aprotic-aqueous sodium-air cell with a ceramic separator and a porous carbon electrode

Feng Liang, Katsuro Hayashi

Applied Fine Chemistry

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38 Citations (Scopus)

Abstract

A mixed aqueous/aprotic Na-air cell that works at room temperature has been fabricated and its discharge properties have been examined experimentally as a primary cell. A dense Na₃Zr₂Si₂PO₁₂ ceramic with an ionic conductivity of 1.3 × 10^-3 S·Ecm^-1 at 25°C and a porous electrode containing Mn₃O₄ catalyzed carbon are used as a solid electrolyte separator and an air electrode, respectively. This cell gives a maximum output power density of 21 mW·Ecm^-2 at 25°C, which is one of the best results among alkali metal-air cells reported to date. Electrochemical impedance spectroscopy reveals that a reduction in ohmic resistivity of the ceramic separator is now crucial for a further increase in power density.

Original language	English
Pages (from-to)	A1215-A1219
Journal	Journal of the Electrochemical Society
Volume	162
Issue number	7
DOIs	https://doi.org/10.1149/2.0421507jes
Publication status	Published - Jan 1 2015

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All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

Cite this

Liang, F., & Hayashi, K. (2015). A high-energy-density mixed-aprotic-aqueous sodium-air cell with a ceramic separator and a porous carbon electrode. Journal of the Electrochemical Society, 162(7), A1215-A1219. https://doi.org/10.1149/2.0421507jes

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