氧化还原导电水凝胶制备及其在微生物燃料电池的应用  

The Synthesise of Electron-conducting Redox Hydrogel and Its Application in Microbial Fuel Cell

作　　者：王凯鹏[1] 陈胜利[1] 

机构地区：[1]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《电化学》2010年第1期20-24,共5页Journal of Electrochemistry

基　　金：国家自然科学基金(20676108)资助

摘　　要：微生物细胞与微生物燃料电池阳极之间的电子传递效率是影响产电性能的关键因素.借助阳极修饰可以促进电子转移速率,提高电池的性能.本文合成了一种以聚4-乙烯基吡啶为骨架,中性红单体为氧化还原活性中心、具有良好导电性和生物兼容性的氧化还原水凝胶材料.其中通过共价键合固定氧化还原中介体,避免了对外界环境的二次污染.以该材料修饰碳纸作为阳极组装电池,实验表明经过修饰的生物阳极驯化周期缩短,阳极电势更接近NADH/NAD的平衡电位.该电池的功率密度较未修饰的电极的电池有明显的提高.Efficient electron transfer between the microbe and the anode is key for the electricity generation in Microbial fuel eeU（MFC）. Through the modification of anode, the rate of electron transfer can be accelerated, therefore the perforrnanee of MFC can be enhanced. In this paper, we report the synthesis of a type of electronconducting and bio-compatible redox hydrogel and its application. The hydrogel consists of poly （4-vinylpyridine） as backbone and neutral red as the redox center. By immobiliazing neutral red on the backbone through covalent bond, the secondary contamination due to the soluble redox mediator to external environment can be prevented. MFCs using the hydrogel-modified carbon anode significantly exhibit shorter acclimation period, and the anode potential is closer to the equilibrium potential of NADH/NAD, which result in higher power density.

关 键 词：微生物燃料电池 阳极修饰 水凝胶 氧化还原中介体 

分 类 号：TM911.4[电气工程—电力电子与电力传动]