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Graphene aerogels for efficient energy storage and conversion
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2018-01-08 00:00:00 , DOI: 10.1039/c7ee03031b Jiajun Mao 1, 2, 3, 4, 5 , James Iocozzia 6, 7, 8, 9 , Jianying Huang 1, 2, 3, 4, 5 , Kai Meng 1, 2, 3, 4, 5 , Yuekun Lai 1, 2, 3, 4, 5 , Zhiqun Lin 6, 7, 8, 9
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2018-01-08 00:00:00 , DOI: 10.1039/c7ee03031b Jiajun Mao 1, 2, 3, 4, 5 , James Iocozzia 6, 7, 8, 9 , Jianying Huang 1, 2, 3, 4, 5 , Kai Meng 1, 2, 3, 4, 5 , Yuekun Lai 1, 2, 3, 4, 5 , Zhiqun Lin 6, 7, 8, 9
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Concerns over air quality reduction resulting from burning fossil fuels have driven the development of clean and renewable energy sources. Supercapacitors, batteries and solar cells serve as eco-friendly energy storage and conversion systems vitally important for the sustainable development of human society. However, many diverse elements influence the performance of energy storage and conversion systems. The overall efficiency of systems depends on the specific structure and properties of incorporated functional materials. Carbon materials, such as graphene, are especially promising for materials development in the energy storage and conversion fields. Graphene, a two-dimensional (2D) carbon material only a single atom thick, has massless Dirac fermions (electron transport is governed by Dirac's equation), displays outstanding electrical conductivity, superior thermal conductivity and excellent mechanical properties. 2D free-standing graphene films and powders have paved the way for promising energy applications. Recently, much effort has been spent trying to improve the number of active sites in electrode materials within 3D network/aerogel structures derived from graphene. This is because graphene aerogels are promising materials for energy systems due to their porous hierarchical structure which affords rapid electron/ion transport, superior chemical and physical stability, and good cycle performance. This review aims to summarize the synthetic methods, mechanistic aspects, and energy storage and conversion applications of novel 3D network graphene, graphene derivatives and graphene-based materials. Areas of application include supercapacitors, Li-batteries, H2 and thermal energy storage, fuel cells and solar cells.
中文翻译：
石墨烯气凝胶可实现高效的能量存储和转换
由于燃烧化石燃料而导致空气质量下降的担忧推动了清洁和可再生能源的发展。超级电容器，电池和太阳能电池是对人类社会的可持续发展至关重要的生态友好型储能和转换系统。但是，许多不同的因素都会影响储能和转换系统的性能。系统的整体效率取决于所结合功能材料的特定结构和特性。碳材料（例如石墨烯）对于储能和转换领域的材料开发尤其有前途。石墨烯是仅单个原子厚的二维（2D）碳材料，具有无质量的狄拉克费米子（电子传输受狄拉克方程式控制），具有出色的导电性，优异的导热性和出色的机械性能。2D独立式石墨烯薄膜和粉末为有前途的能源应用铺平了道路。近来，已经花费了很多努力来尝试改善源自石墨烯的3D网络/气凝胶结构内的电极材料中的活性位点的数量。这是因为石墨烯气凝胶具有多孔的分层结构，可提供快速的电子/离子传输，优异的化学和物理稳定性以及良好的循环性能，因此是能源系统的有前途的材料。这篇综述旨在总结新型3D网络石墨烯，石墨烯衍生物和基于石墨烯的材料的合成方法，力学方面以及能量存储和转换应用。应用领域包括超级电容器，2，储热，燃料电池和太阳能电池。
更新日期：2018-01-08
中文翻译：
石墨烯气凝胶可实现高效的能量存储和转换
由于燃烧化石燃料而导致空气质量下降的担忧推动了清洁和可再生能源的发展。超级电容器，电池和太阳能电池是对人类社会的可持续发展至关重要的生态友好型储能和转换系统。但是，许多不同的因素都会影响储能和转换系统的性能。系统的整体效率取决于所结合功能材料的特定结构和特性。碳材料（例如石墨烯）对于储能和转换领域的材料开发尤其有前途。石墨烯是仅单个原子厚的二维（2D）碳材料，具有无质量的狄拉克费米子（电子传输受狄拉克方程式控制），具有出色的导电性，优异的导热性和出色的机械性能。2D独立式石墨烯薄膜和粉末为有前途的能源应用铺平了道路。近来，已经花费了很多努力来尝试改善源自石墨烯的3D网络/气凝胶结构内的电极材料中的活性位点的数量。这是因为石墨烯气凝胶具有多孔的分层结构，可提供快速的电子/离子传输，优异的化学和物理稳定性以及良好的循环性能，因此是能源系统的有前途的材料。这篇综述旨在总结新型3D网络石墨烯，石墨烯衍生物和基于石墨烯的材料的合成方法，力学方面以及能量存储和转换应用。应用领域包括超级电容器，2，储热，燃料电池和太阳能电池。
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