碳基功能材料的制备及其在锂空气电池中的应用

Preparation of Carbon-Based Functional Materials and Its Application in Li-O2 Batteries

碳材料的研究开发是电化学能源存储技术发展和应用的关键之一,新型碳材料具有原料丰富、成本低廉、比表面积大、导电性优异、化学性能稳定等优点,被广泛地应用于诸如环境修复、电化学及生物医学等领域,备受国内外专家、学者的关注。综述了碳基功能材料在锂空气电池中的发展历程,针对碳材料的两种典型代表石墨烯和生物质衍生碳的制备及改性研究进行了详细介绍。讨论了石墨烯的元素掺杂改性,并阐述了金属及金属氧化物负载对锂空气电池的性能提升;探讨生物质衍生碳具有N、P、S等元素的自掺杂效应及其结构的纳米化和优化制备工艺对催化性能的影响。分别对两种碳材料的优势进行了分析,对面临的挑战进行了总结。

The research of carbon materials is one of the key factor of the development and application of electrochemical energy storage technology. The new carbon materials have been widely investigated for environmental remediation,electrochemistry and biomedicine,due to the wide range of raw materials,low cost,large specific surface area,excellent electrical conductivity and stable chemical properties. The research progress of carbon-based functional materials in Li-O2 batteries were reviewed. The preparation and modification of two typical carbon materials,include graphene and biomass-derived carbons were described in detail. The element doping modification of graphene was discussed,and the performance improvement of Li-O 2 batteries by metal and metal oxide loading was described,respectively. Study the effect of the self-doping of N,P,S and other elements,the nano-structure,and the optimized preparation process on the catalytic performance of biomass-derived carbon. The advantages of the two carbon materials were analyzed separately,and the challenges were summarized.