Laser fabrication of graphene-based supercapacitors

Supercapacitors (SCs) have broad applications in wearable electronics (e.g., e-skin, robots). Recently, graphenebased supercapacitors (G-SCs) have attracted extensive attention for their excellent flexibility and electrochemical performance. Laser fabrication of G-SCs exhibits obvious superiority because of the simple procedures and integration compatibility with future electronics. Here, we comprehensively summarize the state-of-the-art advancements in laser-assisted preparation of G-SCs, including working mechanisms, fabrication procedures,and unique characteristics. In the working mechanism section, electric double-layer capacitors and pseudocapacitors are introduced. The latest advancements in this field are comprehensively summarized, including laser reduction of graphene oxides, laser treatment of graphene prepared from chemical vapor deposition, and laserinduced graphene. In addition, the unique characteristics of laser-enabled G-SCs, such as structured graphene,graphene hybrids, and heteroatom doping graphene-related electrodes, are presented. Subsequently, laser-enabled miniaturized, stretchable, and integrated G-SCs are also discussed. It is anticipated that laser fabrication of G-SCs holds great promise for developing future energy storage devices.