Details

Autor(en) / Beteiligte

• Shiga, Tohru
• Hase, Yoko
• Yagi, Yusuke
• Takahashi, Naoko
• Takechi, Kensuke

Titel

Catalytic Cycle Employing a TEMPO–Anion Complex to Obtain a Secondary Mg–O2 Battery

Ist Teil von

• The journal of physical chemistry letters, 2014-05, Vol.5 (10), p.1648-1652

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Nonaqueous Mg–O2 batteries are suitable only as primary cells because MgO precipitates formed during discharging are not decomposed electrochemically at ambient temperatures. To address this problem, the present study examined the ability of the 2,2,6,6-tetramethylpiperidine-oxyl (TEMPO)–anion complex to catalyze the decomposition of MgO. It was determined that this complex was capable of chemically decomposing MgO at 60 °C. A catalytic cycle for the realization of a rechargeable Mg–O2 electrode was designed by combining the decomposition of MgO via the TEMPO–anion complex and the TEMPO–redox couple. This work also demonstrates that a nonaqueous Mg–O2 battery incorporating acrylate polymer having TEMPO side units in the cathode shows evidence of being rechargeable.