High‐Energy‐Density Foldable Battery Enabled by Zigzag‐Like Design
Abstract
Flexible batteries, seamlessly compatible with flexible and wearable electronics, attract a great deal of research attention. Current designs of flexible batteries struggle to meet one of the most extreme yet common deformation scenarios in practice, folding, while retaining high energy density. Inspired by origami folding, a novel strategy to fabricate zigzag‐like lithium ion batteries with superior foldability is proposed. The battery structure could approach zero‐gap between two adjacent energy storage segments, achieving an energy density that is 96.4% of that in a conventional stacking cell. A foldable battery thus fabricated demonstrates an energy density of 275 Wh L−1 and is resilient to fatigue over 45 000 dynamic cycles with a folding angle of 130°, while retaining stable electrochemical performance. Additionally, the power stability and resilience to nail shorting of the foldable battery are also examined.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 07, 2018
- Source ID
- 10.1002/aenm.201802998
Entities
People
- Boyu Qie
- Changmin Shi
- Cheng Qian
- Haowei Zhai
- Meijie Chen
- Pengfei Yang
- Tianyang Wang
- Xi Chen
- Xiangbiao Liao
- Xue Wang
- Youlong Chen
- Yuan Yang
Organizations
- Air Force Office of Scientific Research
- China Scholarship Council
- Columbia University
- Harbin Institute of Technology
- Xi'an Jiaotong University