石墨烯类材料修饰尿液微生物燃料电池阳极的研究

doi:10.11949/j.issn.0438-1157.20171501

摘要/Abstract

摘要：

尿液微生物燃料电池（urine-powered microbial fuel cell，UMFC）能够将尿液中有机物的化学能转化为电能，阳极是影响其产能的关键因素。黑磷（BP）、膨胀石墨（EG）和羧基化石墨烯（COOH-GN）是三种典型的石墨烯类新型材料，分别用这三种材料对阳极碳布进行修饰处理得到了三种电极（BP/CC、EG/CC和COOH-GN/CC）。修饰后的电极表面明显变粗糙，且碳布阳极阻抗均有一定程度的减小。分别以BP/CC、EG/CC和COOH-GN/CC三种电极为阳极运行UMFC，获得的最大电压分别为587.71，512.46和492.49 mV，最大功率密度分别为5254.43，3925.44和3252.05 mW/m³，BP/CC阳极UMFC的性能最好。

关键词: 黑磷, 膨胀石墨, 羧基化石墨烯, 燃料电池, 阳极

Abstract:

Urine-powered microbial fuel cells (UMFCs) are bioelectrochemical system that can recover energy from urine-a typical wastewater produced in urban and aerospace ships. The anode is the key unit determining the UMFC performance. To improve its performance, black phosphorus (BP), expanded graphite (EG) and carboxyl graphene (COOH-GN) which are three graphene-type novel materials were used to modify carbon cloth anode and three anodes (BP/CC, EG/CC and COOH-GN/CC) were thus fabricated. The surface of the carbon cloth becomes rougher after modification. The results of electrochemical impedance spectroscopy tests demonstrated that the modified anodes have low resistance and excellent electrochemical properties. Using BP/CC, EG/CC and COOH-GN/CC as the UMFC anodes respectively, the UMFCs yielded maximum voltage output of 587.71, 512.46 and 492.49 mV, respectively, power density of 5254.43, 3925.44 and 3252.05 mW/m³, respectively, which clearly shows that the BP modification is the best.

Key words: black phosphorus, expanded graphite, carboxyl graphene, fuel cell, anode

中图分类号:

周宇, 刘中良, 侯俊先, 陈稳稳, 娄晓歌, 李艳霞. 石墨烯类材料修饰尿液微生物燃料电池阳极的研究[J]. 化工学报, 2018, 69(6): 2790-2796.

ZHOU Yu, LIU Zhongliang, HOU Junxian, CHEN Wenwen, LOU Xiaoge, LI Yanxia. Study of urine-powered microbial fuel cell anode modified by graphene-type novel materials[J]. CIESC Journal, 2018, 69(6): 2790-2796.

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