共 47 条
High-capacitance bioanode circumvents bioelectrochemical reaction transition in the voltage-reversed serially-stacked air-cathode microbial fuel cell
被引:9
作者:
Zhao, Wenjuan
[1
,2
]
Fu, Wenna
[1
,2
]
Chen, Siting
[1
,2
]
Xiong, Hanzhi
[1
,2
]
Lan, Longfei
[1
,2
]
Jiang, Minhua
[1
,2
,3
]
Patil, Sunil A.
[4
]
Chen, Shuiliang
[1
,2
]
机构:
[1] Jiangxi Normal Univ, Dept Chem & Chem Engn, 99 Ziyang Rd, Nanchang 330022, Jiangxi, Peoples R China
[2] Jiangxi Normal Univ, Nanofiber Engn Ctr Jiangxi Prov, 99 Ziyang Rd, Nanchang 330022, Jiangxi, Peoples R China
[3] Xinyu Univ, Sch New Energy Sci & Engn, Xinyu 338000, Peoples R China
[4] Indian Inst Sci Educ & Res Mohali IISER Mohali, Dept Earth & Environm Sci, Sect 81, Sas Nagar 140306, Punjab, India
基金:
中国国家自然科学基金;
关键词:
Serially-stacked microbial fuel cell system;
Voltage reversal;
Bioelectrochemical reaction transition;
Capacitive bioanode;
Carbon foam;
ANODIC ELECTRON-TRANSFER;
WASTE-WATER TREATMENT;
ELECTRICITY-GENERATION;
POWER OVERSHOOT;
DOPED CARBON;
BIOFILM;
PERFORMANCE;
TECHNOLOGY;
CATALYST;
NITROGEN;
D O I:
10.1016/j.jpowsour.2020.228402
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Serially stacked microbial fuel cells (serial-MFC), which are proposed for energy generation and bioelectronics applications, are always at the risk of voltage reversal. The voltage reversal not only leads to a great energy loss, but also results in the transition of bioelectrochemical reactions of bioanode thereby affecting the target function of the serial-MFC systems. In this study, we present a novel strategy of improving the power generation of serial-MFC system and preventing its collapse under the voltage reversal conditions. A high-capacitance carbon foam (CF) electrode is employed to circumvent the transitioning of bioelectrochemical reaction at the bioanode of serial-MFC systems. Compared to the serial-MFC with the routinely used low-capacitance graphite felt bioanode, the system with the high-capacitance CF bioanode could recover its performance under the voltage reversal conditions, such as, starvation condition for more than a week and over-high current density condition (or over critical current density) for more than a month. Based on the experimental observations, we also propose a possible mechanism behind the circumvention of bioelectrochemical reaction transition at the high-capacitance bioanodes.
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页数:10
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