通过由两个氧化还原离子对介导的生物质流燃料电池将小麦秸秆直接转化为电能。
Direct Conversion of Wheat Straw into Electricity with a Biomass Flow Fuel Cell Mediated by Two Redox Ion Pairs.
作者信息
Gong Jian, Liu Wei, Du Xu, Liu Congmin, Zhang Zhe, Sun Feifei, Yang Le, Xu Dong, Guo Hua, Deng Yulin
机构信息
School of Chemical & Biomolecular Engineering and RBI at Georgia Tech, Georgia Institute of Technology, 500 10th Street N.W., Atlanta, GA, 30332-0620, USA.
Key Laboratory of Polyoxometalates Science of Ministry of Education, Northeast Normal University, Changchun, Jilin, 130024, P.R. China.
出版信息
ChemSusChem. 2017 Feb 8;10(3):506-513. doi: 10.1002/cssc.201601441. Epub 2016 Dec 15.
In this paper, a biomass flow fuel cell to directly convert wheat straw to electricity at low temperature (80-90 °C) and atmospheric pressure is presented. Two redox ion pairs, Fe /Fe and VO /VO , acting as redox catalysts and charge carriers, were used in the anode and cathode flow tanks, respectively. The wheat straw was first oxidized by Fe in the anode tank at approximately 100 °C. The reduced Fe in the anode was used to construct a fuel cell with VO in the cathode. The VO ions were reduced to VO and regenerated to VO by oxygen oxidation. The wheat straw flow fuel cell showed a power output of 100 mW cm . Mediated with liquid Fe carriers, the solid powder of wheat straw could be gradually degraded into low-molecular-weight organic molecules and even oxidized to CO at the anode without using noble-metal catalysts. The overpotential for the electrodes of the flow fuel cell was examined and the energy cost was estimated.
本文介绍了一种生物质流动燃料电池，可在低温（80 - 90°C）和大气压下直接将小麦秸秆转化为电能。分别在阳极和阴极流动槽中使用了两对氧化还原离子对Fe²⁺/Fe³⁺和VO²⁺/VO₂⁺，作为氧化还原催化剂和电荷载体。小麦秸秆首先在阳极槽中于约100°C被Fe³⁺氧化。阳极中还原的Fe²⁺用于与阴极中的VO₂⁺构建燃料电池。VO²⁺离子被还原为VO²⁺，并通过氧气氧化再生为VO₂⁺。小麦秸秆流动燃料电池的功率输出为100 mW cm⁻²。在液态Fe载体的介导下，小麦秸秆固体粉末可在阳极逐渐降解为低分子量有机分子，甚至在不使用贵金属催化剂的情况下被氧化为CO₂。研究了流动燃料电池电极的过电位，并估算了能量成本。
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