With the ever-increasing need for portable and wearable electronics, flexible all-solid-state supercapacitors (ASSSC) have attracted wide attention and show promising application as power sources due to their fast charge-discharge rate, high power density, low cost, easy fabrication, and excellent customizability and versatility. Graphene possesses extraordinary physical properties including large specific surface area and high electronic conductivity and has been viewed as an ideal active electrode material for supercapacitors. Thus far, graphene-based flexible macroscopic assemblies, such as graphene-based films (freestanding films or flexible substrate supported films) and graphene-based fibers have been created and extensively researched as active electrodes for flexible ASSSC. The electrochemical performance of supercapacitors is greatly determined by the structures and physicochemical properties of the active electrode materials, and the mechanical strength of the flexible electrodes largely determines the electrochemical performance of the ASSSC under mechanical deformations including stretching, bending, rolling, and folding. This submitted manuscript gives a up-to-date overview on the controllable fabrication of graphene-based film/fiber electrodes together with the involved scientific issues that need to be addressed, and the electrochemical/mechanical performances of the corresponding graphene-based flexible ASSSC (film-based and fiber-based ones) associated with the strategies that are generally utilized to improve the performances. As a final part, this contribution concludes with some challenges and prospects before graphene-based flexible ASSSC are really commercialized as power systems for wearable and portable electronics.

中文翻译：

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基于石墨烯的柔性全固态超级电容器

随着对便携式和可穿戴电子产品的不断增长的需求，柔性全固态超级电容器（ASSSC）受到了广泛的关注，并因其快速的充电-放电速率，高功率密度，低成本，易用性而显示出有前途的应用作为电源。制造，以及出色的可定制性和多功能性。石墨烯具有非凡的物理特性，包括大的比表面积和高的电子导电性，并且被认为是用于超级电容器的理想活性电极材料。迄今为止，已经建立了基于石墨烯的柔性宏观组件，例如基于石墨烯的膜（独立膜或柔性衬底支撑的膜）和基于石墨烯的纤维，作为柔性ASSSC的活性电极。超级电容器的电化学性能在很大程度上取决于活性电极材料的结构和物理化学性质，而柔性电极的机械强度在很大程度上决定了ASSSC在拉伸，弯曲，滚动和折叠等机械变形下的电化学性能。这份提交的手稿提供了可控制的石墨烯基薄膜/纤维电极制造的最新概述，以及需要解决的相关科学问题，以及相应的石墨烯基柔性ASSSC的电化学/机械性能（薄膜和基于纤维的薄膜）与通常用于改善性能的策略相关联。最后，