Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China.
Sci Rep. 2013;3:2065. doi: 10.1038/srep02065.
Chemical reduction of graphene oxide (GO) is the main route to produce the mass graphene-based materials with tailored surface chemistry and functions. However, the toxic reducing circumstances, multiple steps, and even incomplete removal of the oxygen-containing groups were involved, and the produced graphenes existed usually as the assembly-absent precipitates. Herein, a substrate-assisted reduction and assembly of GO (SARA-GO) method was developed for spontaneous formation of 3D graphene network on arbitrary conductive substrates including active and inert metals, semiconducting Si, nonmetallic carbon, and even indium-tin oxide glass without any additional reducing agents. The SARA-GO process offers a facile, efficient approach for constructing unique graphene assemblies such as microtubes, multi-channel networks, micropatterns, and allows the fabrication of high-performance binder-free rechargeable lithium-ion batteries. The versatile SARD-GO method significantly improves the processablity of graphenes, which could thus benefit many important applications in sensors and energy-related devices.
化学还原氧化石墨烯（GO）是制备具有特定表面化学和功能的大规模石墨烯基材料的主要途径。然而，该方法涉及有毒的还原环境、多步反应，甚至含氧基团的不完全去除，而且所制备的石墨烯通常以无组装的沉淀物形式存在。在此，开发了一种基底辅助还原和组装氧化石墨烯（SARA-GO）的方法，可在包括活性和惰性金属、半导体 Si、非金属碳，甚至氧化铟锡玻璃在内的任意导电基底上自发形成 3D 石墨烯网络，而无需任何额外的还原剂。SARA-GO 工艺为构建独特的石墨烯组装体（如微管、多通道网络、微图案）提供了一种简便、高效的方法，并允许制造高性能无粘结剂可再充电锂离子电池。多功能的 SARD-GO 方法显著提高了石墨烯的加工性能，从而有利于在传感器和能源相关器件等许多重要应用中发挥作用。
