Meng Qi, Kang Cong, Zhu Jiaming, Xiao Xiangjun, Ma Yulin, Huo Hua, Zuo Pengjian, Du Chunyu, Lou Shuaifeng, Yin Geping
MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, People's Republic of China.
Nano Lett. 2022 Jul 13;22(13):5553-5560. doi: 10.1021/acs.nanolett.2c01820. Epub 2022 Jun 16.
With the development of flexible devices, it is necessary to design high-performance power supplies with superior flexibility, durability, safety, etc., to ensure that they can be deformed with the device while retaining their electrochemical functions. Herein, we have designed a flexible lithium-ion battery inspired by the DNA helix structure. The battery structure is mainly composed of multiple thick energy stacks for energy storage and some grooves for stress buffers, which realized the spiral deformation of batteries. According to the results, the batteries exhibit less than 3% capacity degradation even after more than 31000 times of dynamic mechanical loadings. Moreover, the mechanism of the battery with spiral deformability is further revealed. It is anticipated that this bioinspired design strategy could create unique opportunities for the commercialization of flexible batteries and fill the current gap in realizing battery-specific deformations to meet various requirements for future complex device designs.
随着柔性设备的发展，有必要设计出具有卓越柔韧性、耐用性、安全性等的高性能电源，以确保它们能够在随设备变形的同时保持其电化学功能。在此，我们设计了一种受DNA螺旋结构启发的柔性锂离子电池。电池结构主要由多个用于储能的厚能量堆栈和一些用于应力缓冲的凹槽组成，实现了电池的螺旋变形。结果表明，即使经过超过31000次动态机械加载，电池的容量衰减仍小于3%。此外，还进一步揭示了具有螺旋可变形性的电池的机理。预计这种受生物启发的设计策略可为柔性电池的商业化创造独特机遇，并填补目前在实现特定电池变形以满足未来复杂设备设计的各种要求方面的空白。
