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用水热法合成NiO作为阴极催化剂,应用于单室空气阴极微生物燃料电池。结果表明,获得的最大功率密度为21.7 mW/m2。同样条件下,使用Pt/C作为阴极催化剂的微生物燃料电池的最大功率密度为27.5 mW/m2,NiO作为阴极催化剂的产电效能可达到Pt/C的78.9%。电化学阻抗谱(EIS)测得阴极催化剂为NiO和Pt/C的电荷转移内阻分别约为14.6Ω和11.1Ω。以上结果表明NiO具有代替Pt/C作为阴极催化剂应用于微生物燃料电池的潜力。
Hydrothermal synthesis of NiO as a cathode catalyst, used in single-chamber air cathode microbial fuel cells. The results showed that the maximum power density obtained was 21.7 mW / m2. Under the same conditions, the maximum power density of the microbial fuel cell using Pt / C as the cathode catalyst was 27.5 mW / m2, and the production efficiency of NiO as the cathode catalyst was 78.9% of that of Pt / C. Electrochemical impedance spectroscopy (EIS) measured the cathode catalyst NiO and Pt / C charge transfer resistance were about 14.6Ω and 11.1Ω. The above results indicate that NiO has the potential to be used in microbial fuel cells instead of Pt / C as a cathode catalyst.