Mitra Sangha, Katiyar Monica
Department of Materials Science & Engineering, Indian Institute of Technology, 208016, Kanpur, Uttar Pradesh, India.
National Centre for Flexible Electronics, Indian Institute of Technology, 208016, Kanpur, Uttar Pradesh, India.
Chem Asian J. 2023 Aug 1;18(15):e202300369. doi: 10.1002/asia.202300369. Epub 2023 Jun 26.
This review highlights the significance of flash sintering, a photothermal route, in reducing graphene oxide (GO) films. Essentially, extensive efforts are devoted to form graphene electrodes due to its distinctive properties, such as high surface area, excellent electrical conductivity, and optical transparency, owing to which it finds widespread use in energy storage devices, wearable electronics, sensors, and optoelectronics. Thus, rapidly rising market demands for these applications necessitate the need of a technique offering ease of manufacturability and scalability for production of graphene electrodes. The solution-processed graphene electrodes (SPGEs) are promising to fulfil these requirements. Particularly, SPGEs are fabricated by reducing GO film to graphene/reduced graphene oxide (rGO) by utilizing any reduction method, such as chemical, solvothermal, electrochemical, etc. Lately, flash sintering has garnered substantial attention as a promising reduction route for rapid, clean, and green production of graphene electrodes. This review briefly describes the underlying principle, mechanism, and parameters of flash sintering to develop an insight and advantages of this method over extensively used reduction methods. The review is a systematic summarization of the electrical, optical, and microstructural properties of rGO films/electrodes fabricated using this technique.
本综述强调了快速烧结（一种光热途径）在还原氧化石墨烯（GO）薄膜方面的重要性。本质上，由于石墨烯具有独特的性能，如高表面积、优异的导电性和光学透明度，人们致力于制备石墨烯电极，因此它在储能设备、可穿戴电子产品、传感器和光电子学等领域得到了广泛应用。因此，这些应用迅速增长的市场需求使得需要一种能够提供易于制造和可扩展性的技术来生产石墨烯电极。溶液处理的石墨烯电极（SPGEs）有望满足这些要求。特别是，通过利用任何还原方法，如化学、溶剂热、电化学等方法，将GO薄膜还原为石墨烯/还原氧化石墨烯（rGO）来制备SPGEs。最近，快速烧结作为一种用于快速、清洁和绿色生产石墨烯电极的有前景的还原途径，已引起了广泛关注。本综述简要描述了快速烧结的基本原理、机制和参数，以深入了解该方法相对于广泛使用的还原方法的优势。该综述系统总结了使用该技术制备的rGO薄膜/电极的电学、光学和微观结构性能。
