Three-dimensional (3D) electrode architectures for conformal deposition and effective use of catalysts are an emerging area with significant interest in electrocatalytic applications. In this study, we report the fabrication of monolithic, self-standing, 3D graphitic carbon scaffolds with conformally deposited Pt by atomic layer deposition (ALD) as a hydrogen evolution reaction catalyst. Laser scribing is employed to transform polyimide into 3D porous graphitic carbon, which possesses good electronic conductivity and numerous edge plane sites. This laser scribed graphene (LSG) architecture makes it possible to fabricate a monolithic electrocatalyst support without any binders or conductive additives. The synergistic effect between the ALD of Pt and the 3D network of LSG provides an avenue for minimal yet effective usage of Pt leading to an enhanced HER activity. This strategy establishes a general approach for inexpensive and large scale HER device fabrication with minimum catalyst cost.

中文翻译：

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原子层沉积铂的单片激光划片石墨烯支架用于析氢反应

用于保形沉积和有效使用催化剂的三维（3D）电极体系结构是电催化应用领域中引起人们极大兴趣的新兴领域。在这项研究中，我们报告通过原子层沉积（ALD）作为放氢反应催化剂，共形沉积Pt的整体式，自立式3D石墨碳支架的制造。激光划刻被用于将聚酰亚胺转变为3D多孔石墨碳，该碳具有良好的电子导电性和许多边缘平面位置。这种激光划刻石墨烯（LSG）结构使得无需任何粘合剂或导电添加剂即可制造整体式电催化剂载体。Pt的ALD与LSG的3D网络之间的协同效应为Pt的最小而有效的使用提供了一种途径，从而导致HER活性增强。该策略建立了以最小的催化剂成本进行廉价且大规模的HER器件制造的通用方法。