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题名: Enhanced hydrogen production in microbial electrolysis cell with 3D self-assembly nickel foam-graphene cathode
作者: Cai, Weiwei; Liu, Wenzong; Han, Jinglong; Wang, Aijie
刊名: BIOSENSORS & BIOELECTRONICS
出版日期: 2016-06-15
卷号: 80, 页码:118-122
关键词: Nickel foam ; Graphene ; Cathode ; Hydrogen recovery
DOI: 10.1016/j.bios.2016.01.008
部门归属: 中国科学院环境生物技术重点实验室
英文摘要: In comparison to precious metal catalyst especially Platinum (Pt), nickel foam (NF) owned cheap cost and unique three-dimensional (3D) structure, however, it was scarcely applied as cathode material in microbial electrolysis cell (MEC) as the intrinsic laggard electrochemical activity for hydrogen recovery. In this study, a self-assembly 3D nickel foam-graphene (NF-G) cathode was fabricated by facile hydro thermal approach for hydrogen evolution in MECs. Electrochemical analysis (linear scan voltammetry and electrochemical impedance spectroscopy) revealed the improved electrochemical activity and effective mass diffusion after coating with graphene. NF-G as cathode in MEC showed a significant enhancement in hydrogen production rate compared with nickel foam at a variety of biases. Noticeably, NF-G showed a comparable averaged hydrogen production rate (1.31 +/- 0.07 mL H-2 mL(-1) reactor d(-1)) to Platinum/carbon (Pt/C) (1.32 +/- 0.07 mL H-2 mL(-1) reactor d(-1)) at 0.8 V. Profitable energy recovery could be achieved by NF-G cathode at higher applied voltage, which performed the best hydrogen yield of 3.27 +/- 0.16 mol H-2 mol(-1) acetate at 0.8 V and highest energy efficiency of 185.92 +/- 6.48% at 0.6 V. (C) 2016 Elsevier B.V. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36125
Appears in Collections:中国科学院环境生物技术重点实验室_期刊论文

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