The cost-effective construction of self-designed conductive graphene patterns on desired substrates is crucial to the fabrication of graphene-based electrochemical devices. Here, we report a new approach for the scalable construction of laser-induced graphene (LIG) patterns on diverse substrates by using phenolic resin (PR) as the precursor. The PR-based LIG, which was produced with smart and inexpensive 405 nm semiconductor lasers under ambient conditions, possesses several interesting properties, e.g., 3D porous structures, low resistance (∼44 Ω/sq), good mechanical property and a wide range of applicable substrates, e.g., polymer films, glass slides, metal foils, ceramic plates and plant leaves. The efficient absorption of laser light by PR coatings themselves or dopants such as metal salts and organic dyes is demonstrated critical to the formation of PR-based LIG by visible light lasers. Based on this technique, self-designed and highly conductive graphene arrays can be easily constructed on various substrates to fabricate all-carbon supercapacitors and electrochemical glucose biosensors. The unique properties of PR materials, including easy synthesis, tunable structure and composition, excellent film-formation ability and extremely low cost, thus foresee the promising applications of PR-based LIG in electrochemical fields.

中文翻译：

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来自酚醛树脂的可见光激光诱导石墨烯：一种在各种基板上直接写入基于石墨烯的电化学器件的新方法

在所需基板上自行设计的导电石墨烯图案的成本效益结构对于制造基于石墨烯的电化学装置至关重要。在这里，我们报告了一种使用酚醛树脂 (PR) 作为前体在不同基材上可扩展构建激光诱导石墨烯 (LIG) 图案的新方法。基于 PR 的 LIG 是在环境条件下用智能且廉价的 405 nm 半导体激光器生产的，具有几个有趣的特性，例如 3D 多孔结构、低电阻 (~44 Ω/sq)、良好的机械性能和广泛的适用的基材，例如聚合物薄膜、载玻片、金属箔、陶瓷板和植物叶子。PR 涂层本身或掺杂剂（如金属盐和有机染料）对激光的有效吸收被证明对于可见光激光形成 PR 基 LIG 至关重要。基于该技术，可以在各种基板上轻松构建自行设计的高导电石墨烯阵列，以制造全碳超级电容器和电化学葡萄糖生物传感器。PR材料的独特性质，包括易于合成、结构和组成可调、优异的成膜能力和极低的成本，从而预见了基于PR的LIG在电化学领域的广阔应用前景。自行设计的高导电石墨烯阵列可以很容易地构建在各种基板上，以制造全碳超级电容器和电化学葡萄糖生物传感器。PR材料的独特性质，包括易于合成、结构和组成可调、优异的成膜能力和极低的成本，从而预见了基于PR的LIG在电化学领域的广阔应用前景。自行设计的高导电石墨烯阵列可以很容易地构建在各种基板上，以制造全碳超级电容器和电化学葡萄糖生物传感器。PR材料的独特性质，包括易于合成、结构和组成可调、优异的成膜能力和极低的成本，从而预见了基于PR的LIG在电化学领域的广阔应用前景。