Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Articles
Electrochemical Properties of Lithium Air Secondary Batteries Incorporating Manganese Salen Complex as Soluble Catalyst for Nonaqueous Electrolyte Solutions
Shuhei SAKAMOTOHironobu MINOWAMasaya NOHARAMikayo IWATAMasahiko HAYASHITakeshi KOMATSU
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JOURNALS OPEN ACCESS

2019 Volume 87 Issue 6 Pages 365-369

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Abstract

Manganese-containing salen-type complexes of (R,R)-(−)-N,N′-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediaminomanganese(III) chloride (MnSl) were examined as a novel soluble catalyst in nonaqueous electrolyte solutions for lithium air secondary batteries (LABs). The LAB cells with MnSl exhibited a larger first discharge capacity and better cycle performance (893 mAh g−1, 738 mAh g−1 up to 10 cycles) than those without MnSl. Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) conducted during the discharge/charge cycle showed deposition and decomposition of the discharge product, Li2O2, on the surface of the air electrode. Cyclic voltammetry results suggested that MnSl promotes the oxygen reduction reaction and oxygen evolution reaction because of its high reactivity with O2.

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© 2019 The Electrochemical Society of Japan
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