Nonactivated and Activated Biochar Derived from Bananas as Alternative Cathode Catalyst in Microbial Fuel Cells

被引：37
作者：
Yuan, Haoran [1 ,2 ]
Deng, Lifang [1 ,2 ]
Qi, Yujie [1 ,2 ]
Kobayashi, Noriyuki [1 ,2 ]
Tang, Jiahuan [3 ]
机构：
[1] Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
[2] Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
[3] Guangdong Inst Ecoenvironm & Soil Sci, Guangzhou 510650, Guangdong, Peoples R China
来源：
SCIENTIFIC WORLD JOURNAL | 2014年
基金：
国家自然科学基金国际合作与交流项目;
关键词：
OXYGEN REDUCTION REACTION; ALKALINE-MEDIUM; AIR-CATHODE; PHTHALOCYANINE; COTMPP; PTFE;
D O I：
10.1155/2014/832850
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Nonactivated and activated biochars have been successfully prepared by bananas at different thermotreatment temperatures. The activated biochar generated at 900 degrees C (Biochar-act900) exhibited improved oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) performances in alkaline media, in terms of the onset potential and generated current density. Rotating disk electron result shows that the average of 2.65 electrons per oxygen molecule was transferred during ORR of Biochar-act900. The highest power density of 528.2 mW/m(2) and the maximum stable voltage of 0.47V were obtained by employing Biochar-act900 as cathode catalyst, which is comparable to the Pt/C cathode. Owning to these advantages, it is expected that the banana-derived biochar cathode can find application in microbial fuel cell systems.
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页数：8
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