Effect of graphene/polyaniline modified anode on performance of microbial fuel cell

doi:10.11949/j.issn.0438-1157.20181433

Abstract

Abstract:

Nanomaterial modified anode can significantly improve the performance of microbial fuel cell (MFC). The effects of graphene, polyaniline and graphene/polyaniline composite modified electrode on the power output of MFC is mainly explored in this paper. Graphene was electroplated on the surface of the carbon cloth by electrochemical method, and the polyaniline was further prepared by in-situ polymerization to modify the carbon cloth electrode. The modified electrodes were further loaded into a dual-chamber MFC, and the power generation performance was measured. It was observed by scanning electron microscopy that graphene and polyaniline could be modified on the carbon cloth, and polyaniline adhered to the surface of the carbon fiber or graphene thin layer to form a rod-shaped nanostructure. In terms of electricity production performance, the maximum output voltage of MFC loaded with graphene/polyaniline composite modified electrode reached (291±22) mV, which was more than 175% higher than that of the control group loaded with unmodified carbon cloth electrode. The maximum power density of the graphene/polyaniline composite modified electrode group reached (653 ± 25) mW·cm^-2, which was 10.5 times of the control group. The results show that the graphene/polyaniline composite modified electrode can effectively utilize the advantages of good conductivity of graphene and high biocompatibility of polyaniline, and significantly improve the power output of MFC.

Key words: polyaniline, graphene, nanocomposites, microbial fuel cells, bioenergy

摘要：

纳米材料修饰阳极可显著提高微生物燃料电池（MFC）性能，本研究主要探索了石墨烯、聚苯胺和石墨烯/聚苯胺复合修饰电极对MFC产电性能的影响。使用电化学方法电镀石墨烯于碳布表面，进一步通过原位聚合法制备聚苯胺来修饰碳布电极。将修饰电极装载入双室型MFC中，测量其产电性能，并对电极进行表征，测量电化学性能。通过扫描电镜观察到, 碳布能够被修饰上石墨烯和聚苯胺，并且聚苯胺附着于碳纤维或石墨烯薄层表面，形成棒状的纳米结构。产电性能方面，装载石墨烯/聚苯胺修饰电极的MFC最大输出电压最高，达到了（291±22）mV，比装载空白碳布电极的对照组MFC提高了175%以上。石墨烯/聚苯胺电极组MFC的最大输出功率密度同样最高，达到了（653 ± 25）mW·m^-2，为空白碳布对照组的10.5倍。实验结果表明：石墨烯/聚苯胺复合修饰电极可有效利用石墨烯导电性好和聚苯胺生物相容性高的优点，显著提高MFC的产电性能。

关键词: 聚苯胺, 石墨烯, 纳米复合材料, 微生物燃料电池, 生物能源

CLC Number:

TB 33

Hongwei JIN,Dandan ZHAI,Xin WANG,Shuang ZHAO,Xiangyang MENG,Yueying HE,Yang SHEN,Ming HUI. Effect of graphene/polyaniline modified anode on performance of microbial fuel cell[J]. CIESC Journal, 2019, 70(6): 2343-2350.

靳宏伟,翟丹丹,王心,赵爽,孟祥阳,何玥颖,沈洋,惠明. 石墨烯/聚苯胺修饰阳极对微生物燃料电池性能的影响[J]. 化工学报, 2019, 70(6): 2343-2350.

Figures/Tables 8

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阳极	修饰材料制备方法	MFC类型	阳极微生物	最大功率密度P _max /(mW·m^－2)	文献	修饰材料制备难度	修饰材料制备成本	对MFC性能的提升效果
PANI/石墨烯/钛片	PANI：电沉积，循环伏安法；石墨烯：电沉积，循环伏安法	双室	生活污水	156	[18]	+	+	+
PANI/石墨烯泡沫	PANI：原位聚合,质子酸掺杂；石墨烯：化学气相沉积	双室	Shewanella oneidensis	768	[17]	+++	+++	+++
PANI/石墨烯/石墨纸	PANI：电化学，恒电流法电聚合；石墨烯：电化学剥离	双室	Shewanella oneidensis	381	[19]	+	+	++
PANI/石墨烯/石墨棒	PANI和石墨烯：电沉积，循环伏安法	双室	活性污泥	230.2	[20]	+	+	+
PANI/石墨烯/碳布	PANI：原位聚合，无掺杂；石墨烯：电镀	双室	Shewanella oneidensis	653	本文	+	+	+++

阳极	修饰材料制备方法	MFC类型	阳极微生物	最大功率密度P _max /(mW·m^－2)	文献	修饰材料制备难度	修饰材料制备成本	对MFC性能的提升效果
PANI/石墨烯/钛片	PANI：电沉积，循环伏安法；石墨烯：电沉积，循环伏安法	双室	生活污水	156	[18]	+	+	+
PANI/石墨烯泡沫	PANI：原位聚合,质子酸掺杂；石墨烯：化学气相沉积	双室	Shewanella oneidensis	768	[17]	+++	+++	+++
PANI/石墨烯/石墨纸	PANI：电化学，恒电流法电聚合；石墨烯：电化学剥离	双室	Shewanella oneidensis	381	[19]	+	+	++
PANI/石墨烯/石墨棒	PANI和石墨烯：电沉积，循环伏安法	双室	活性污泥	230.2	[20]	+	+	+
PANI/石墨烯/碳布	PANI：原位聚合，无掺杂；石墨烯：电镀	双室	Shewanella oneidensis	653	本文	+	+	+++

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