基于碳纳米管/石墨烯杂化材料的一体式氧还原电极可控构筑

项目名称： 基于碳纳米管/石墨烯杂化材料的一体式氧还原电极可控构筑

项目编号： No.21506212

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 有机化学

项目作者： 魏伟

作者单位： 中国科学院大连化学物理研究所

项目金额： 21万元

中文摘要： 本项目旨在研究基于碳纳米管/石墨烯杂化材料的一体式氧还原电极可控构筑，探索该一体式电极在燃料电池或金属/空气电池中的应用。前期研究发现对碳质纳米材料的电子结构进行调控可以提高其氧还原反应活性，但是制备的气体扩散电极受材料分散状态、辅助组分等的影响，其导电与传质过程受到阻碍，性能大大降低。直接制备具有可控结构的宏观一体式电极可能是一条有效解决上述问题的途径。本项目重点研究利用碳纳米管/石墨烯杂化材料构筑一体式电极，通过调控其孔结构、导电性、机械性能等性质优化其氧还原反应过程；研究电子结构调控与一体式电极构筑的过程耦合；研究该电极独自作为氧还原电极在燃料电池或金属/空气电池中的应用前景。本项目的实施为利用纳米工程方法制备一体电极、调控其性质提供新思路，对氧还原电极过程的解析具有重要的理论指导意义，在基于碳质纳米材料的功能导向材料设计和可控组装方面具有实际应用价值。

中文关键词： 直接醇类燃料电池；气体扩散电极；氧还原反应；碳材料；石墨烯

英文摘要： The purposes of this project are to develop a method for controllable assembly of carbon nanotube/graphene monolith and explore its potential as a directly used oxygen reduction electrode in fuel cells or metal/air batteries. In our previous research, we found that tuning the electronic structure of carbon materials could improve the oxygen reduction activity. The performance of gas diffusion electrode was affected by the aggregation and additive content which may obstacle the electronic transfer and mass diffusion process. The controllable construction of monolith electrode should be a good solution to these problems. This project will study the controllable preparation of a monolith electrode, and the pore structure, conductivity and mechanical property will be optimized to enhance oxygen reduction reaction process. On the basis of these investigations, the combination of electronic structure tuning and nano-architecture construction will be studied. Finally, we will investigate the practical application of this monolith electrode in fuel cells or metal/air batteries. This project will provide a new route for monolith electrode preparation and property control. The researches of this project will promote the theory studies on resolving the electrode process of oxygen reduction reaction and accelerate the real application of nanocarbon materials in function-directed design and controllable assembly field.

英文关键词： Direct alcohol fuel cell;Gas diffusion electrode;Oxygen reduction reaction;Carbon materials;Graphene