Mo Funian, Liang Guojin, Huang Zhaodong, Li Hongfei, Wang Donghong, Zhi Chunyi
Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077, Hong Kong S.A.R., China.
Shenzhen Research Institute, City University of Hong Kong, Nanshan District, Shenzhen, 518000, China.
Adv Mater. 2020 Feb;32(5):e1902151. doi: 10.1002/adma.201902151. Epub 2019 Jul 30.
Flexible and wearable energy storage devices are receiving increasing attention with the ever-growing market of wearable electronics. Fiber-shaped batteries display a unique 1D architecture with the merits of superior flexibility, miniaturization potential, adaptability to deformation, and compatibility with the traditional textile industry, which are especially advantageous for wearable applications. In the recent research frontier in the field of fiber-shaped batteries, in addition to higher performance, advances in multifunctional, scalable, and integrable systems are also the main themes. However, many difficulties exist, including difficult encapsulation and installation of separators, high internal resistance, and poor durability. Herein, the design principles (e.g., electrode preparation and battery assembly) and device performance (e.g., electrochemical and mechanical properties) of fiber-shaped batteries, including lithium-based batteries, zinc-based batteries, and some other representative systems, are summarized, with a focus on multifunctional devices with environmental adaptability, stimuli-responsive properties, and scalability up to energy textiles, with the hope of enlightening future research directions. Finally, technical challenges in the realistic wearable application of these batteries are also discussed with the aim of providing possible solutions and new insights for further improvement.
随着可穿戴电子产品市场的不断增长，柔性可穿戴储能设备受到越来越多的关注。纤维状电池呈现出独特的一维结构，具有卓越的柔韧性、小型化潜力、对变形的适应性以及与传统纺织工业的兼容性等优点，这对于可穿戴应用尤为有利。在纤维状电池领域的最新研究前沿中，除了更高的性能外，多功能、可扩展和可集成系统的进展也是主要主题。然而，仍然存在许多困难，包括隔膜的封装和安装困难、内阻高以及耐久性差等问题。在此，总结了纤维状电池的设计原则（如电极制备和电池组装）和器件性能（如电化学和机械性能），包括锂基电池、锌基电池和其他一些代表性系统，重点关注具有环境适应性、刺激响应特性以及可扩展至能量纺织品的多功能器件，希望能为未来的研究方向提供启示。最后，还讨论了这些电池在实际可穿戴应用中的技术挑战，旨在为进一步改进提供可能的解决方案和新见解。
