气候变化领域集成服务门户(CCPortal): Human joint-inspired structural design for a bendable/foldable/stretchable/twistable battery: achieving multiple deformabilities

CCPortal

DOI	10.1039/d1ee00480h
	Human joint-inspired structural design for a bendable/foldable/stretchable/twistable battery: achieving multiple deformabilities
	Chen A.; Guo X.; Yang S.; Liang G.; Li Q.; Chen Z.; Huang Z.; Yang Q.; Han C.; Zhi C.
发表日期	2021
ISSN	17545692
起始页码	3599
结束页码	3608
卷号	14 期号:6
英文摘要	Flexible lithium-ion batteries (LIBs) with high energy density and stable electrochemical performance are regarded as the most promising power source for supplying wearable electronics. Simultaneously achieving a small bending angle, multiple deformation modes, superior mechanical durability and high energy density remains a challenge. Here, inspired by a human joint, a novel and rational structural design for flexible LIBs is reported. In the battery, thick and rigid stacks for storing the main energy are equipped with cumbered surfaces and interconnected thin parts, imitating the articular surface-ligament structure of a human joint providing flexibility for the whole battery. The configuration of thick stacks can be changed by different winding technologies, which endows the battery with abundant deformabilities, including bending, twisting, stretching and even winding. A finite element simulation confirmed that our designed battery will not lead to the irreversible plastic deformation of metal current collectors under various harsh and complex deformations. The flexible battery with cubic energy storage units exhibits a high energy density of 371.9 W h L−1, which is 92.9% of a conventional pouch cell. Furthermore, it can maintain stable cycling performances, even undergoing over 200 000 times dynamic bending and 25 000 times dynamic twisting deformations. The battery with cylindrical energy storage units can withstand more harsh and complex deformations. After undergoing over 100 000 times dynamic stretching, 20 000 times twisting and 100 000 times bending deformations, a high-capacity retention of over 88% can be attained. Accordingly, the novel and unique flexible LIBs provide great promise for its practical applications in wearable electronics. © The Royal Society of Chemistry 2021.
英文关键词	Bending (deformation); Electric windings; Energy storage; Flexible electronics; Formability; Structural design; Wearable technology; Winding; Articular surfaces; Complex deformation; Electrochemical performance; Energy storage unit; Finite element simulations; High energy densities; Mechanical durability; Winding technology; Lithium-ion batteries; bending; deformation; design; electrochemistry; energy storage; equipment component; fuel cell; lithium; performance assessment
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190637
作者单位	Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong; Hong Kong Center for Cerebro-Cardiovascular Health Engineering (COCHE), Pak Shek Kok, Shatin, NT, HKSAR, China; Centre for Functional Photonics, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077, Hong Kong
推荐引用方式 GB/T 7714	Chen A.,Guo X.,Yang S.,et al. Human joint-inspired structural design for a bendable/foldable/stretchable/twistable battery: achieving multiple deformabilities[J],2021,14(6).
APA	Chen A..,Guo X..,Yang S..,Liang G..,Li Q..,...&Zhi C..(2021).Human joint-inspired structural design for a bendable/foldable/stretchable/twistable battery: achieving multiple deformabilities.Energy & Environmental Science,14(6).
MLA	Chen A.,et al."Human joint-inspired structural design for a bendable/foldable/stretchable/twistable battery: achieving multiple deformabilities".Energy & Environmental Science 14.6(2021).