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Compact energy storage enabled by graphenes: Challenges, strategies and progress
Materials Today ( IF 24.2 ) Pub Date : 2021-08-09 , DOI: 10.1016/j.mattod.2021.07.026
Junwei Han 1 , Huan Li 1 , Quan-Hong Yang 1
Affiliation  

Storing as much energy as possible in as compact a space as possible is an ever-increasing concern to deal with the emerging “space anxiety” in electrochemical energy storage (EES) devices like batteries, which is known as “compact energy storage”. Carbons built from graphene units can be used as active electrodes or inactive key materials acting as porous micro- or even nano-reactors that facilitate battery reactions and play a vital role in optimizing the volumetric performance of the electrode and the battery. In this review, we discuss and clarify the key issues and specific strategies for compact energy storage, especially in batteries. The use of shrinkable carbon networks to produce small yet sufficient reaction space together with smooth charge delivery is highlighted as the simplest structure–function-performance relationship when used in supercapacitors and is then extended to overcome problems in compact rechargeable lithium/sodium/potassium batteries. Special concerns about cycling stability, fast charging and safety in compact batteries are discussed in detail. Strategies for compact energy storage ranging from materials to electrodes to batteries are reviewed here to provide guidance for how to produce a compact high energy battery by densifying the electrodes using customized carbon structures.

中文翻译:

石墨烯实现的紧凑型储能:挑战、策略和进展

在尽可能紧凑的空间中存储尽可能多的能量是应对电化学储能 (EES) 设备(如电池)中新兴的“空间焦虑”的一个日益关注的问题,这被称为“紧凑型储能”。由石墨烯单元构建的碳可用作活性电极或非活性关键材料,充当多孔微甚至纳米反应器,促进电池反应并在优化电极和电池的体积性能方面发挥重要作用。在这篇综述中,我们讨论并阐明了紧凑型储能的关键问题和具体策略,尤其是在电池方面。当用于超级电容器时,使用可收缩的碳网络来产生小而足够的反应空间以及平稳的电荷传输,被强调为最简单的结构-功能-性能关系,然后扩展到克服紧凑型可充电锂/钠/钾电池中的问题。详细讨论了对紧凑型电池的循环稳定性、快速充电和安全性的特别关注。这里回顾了从材料到电极再到电池的紧凑型储能策略,为如何通过使用定制的碳结构致密化电极来生产紧凑型高能电池提供指导。详细讨论了紧凑型电池的快速充电和安全性。这里回顾了从材料到电极再到电池的紧凑型储能策略,为如何通过使用定制的碳结构致密化电极来生产紧凑型高能电池提供指导。详细讨论了紧凑型电池的快速充电和安全性。这里回顾了从材料到电极再到电池的紧凑型储能策略,为如何通过使用定制的碳结构致密化电极来生产紧凑型高能电池提供指导。

更新日期:2021-08-09
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