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The excellent performance of nest-like oxygen-deficient Cu1.5Mn1.5O4 applied in activated carbon air-cathode
Junjie Wang1, Pei Tian1, Kexun Li1
1The College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China; MOE Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin 300071, China; Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Tianjin 300071, China.
Abstract:
This study investigated the performance of nano spinel nest-like oxygen-deficient Cu1.5Mn1.5O4 doping activated carbon (AC) as air cathode in microbial fuel cell (MFC). The Cu1.5Mn1.5O4 was synthesized via hydrothermal method and subsequent annealed. The maximum power density (MPD) of MFC with oxygen-deficient Cu1.5Mn1.5O4 modified cathode was 1928±18mWm-2, which was 1.53 times higher than the bare cathode. The electrochemical studies showed that Cu1.5Mn1.5O4 doping AC exhibited higher kinetic activity and lower resistance. The mechanism of oxygen reduction for the catalyst was a four electron pathway. The oxygen deficient of Cu1.5Mn1.5O4 played an important role in catalytic activity. So Cu1.5Mn1.5O4 would be an excellent promising catalyst for ORR in MFC.
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