阴极液环境条件对生物燃料电池性能的影响  

Effect of catholyte environmental condition on the performance of microbial fuel cell

作　　者：夏淑梅[1] 朱宁正[1] 温青[1] 吴英 孙茜[1] 

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001

出　　处：《电源技术》2009年第2期91-93,共3页Chinese Journal of Power Sources

基　　金：黑龙江省科技攻关项目(GC07A305)资助

摘　　要：以铁氰化钾为阴极电子受体,葡萄糖模拟废水为燃料,构建了无媒介体双室生物燃料电池,考察了阴极液中铁氰化钾浓度、pH值、离子强度对电池性能的影响。结果表明:增大铁氰化钾浓度,可以降低MFC的内阻,提高MFC的开路电压和输出功率。铁氰化钾质量浓度由0.5g/L增加到10.0g/L,MFC表观内阻由713W降低到151W,MFC最大输出功率由802mW/m3增加到4061mW/m3;K3Fe(CN)6质量浓度为0.5g/L时,在阴极液中加入3g/LNaSO4电解质,MFC的内阻由713W降低到253W,输出功率由802mW/m3增加到1820mW/m3;阴极液的pH值对电池的发电性能也有影响。A two-chamber microbial fuel cell was constructed by using ferricyanide as cathodic electron acceptors and glucose as the anode fed. The effects of ferricyanide concentration, pH value and ionic strength in catholyte on performance of MFC were researched. The results demonstrate that the internal resistance of MFC can be decreased, open circuit voltage and output power of MFC can be improved by increasing the concentration of K3Fe（CN）3. While the concentration increased from 0.5 g/L to10.0 g/L, the intemal resistance decreased from 713 Ωto 151Ω, and the output power enhanced from 802 mW/m^3 to 4 061 mW/m^3; At concentration of 0.5 g/L, the internal resistance decreased from 713 Ω to 253 Ω and the output power enhanced from 802 mW/m^3 to 1 820 mW/m^3 through adding 3 g/L Na2SO4 into catholyte., pH value of catholyte was found to have affect on performance of MFC.

关 键 词：生物燃料电池 铁氰化钾 功率密度 阴极电子受体 

分 类 号：TM911.4[电气工程—电力电子与电力传动]