Roll‐To‐Roll Fabrication of Zero‐Volume‐Expansion Lithium‐Composite Anodes to Realize High‐Energy‐Density Flexible and Stable Lithium‐Metal Batteries

Autor: Chao Luo, Hong Hu, Tian Zhang, Shujing Wen, Ruo Wang, Yanan An, Shang‐Sen Chi, Jun Wang, Chaoyang Wang, Jian Chang, Zijian Zheng, Yonghong Deng
Rok vydání: 2022
Předmět:
Zdroj: Advanced Materials. 34:2205677
ISSN: 1521-4095
0935-9648
DOI: 10.1002/adma.202205677
Popis: The lithium (Li)-metal anode offers a promising solution for high-energy-density lithium-metal batteries (LMBs). However, the significant volume expansion of the Li metal during charging results in poor cycling stability as a result of the dendritic deposition and broken solid electrolyte interphase. Herein, a facile one-step roll-to-roll fabrication of a zero-volume-expansion Li-metal-composite anode (zeroVE-Li) is proposed to realize high-energy-density LMBs with outstanding electrochemical and mechanical stability. The zeroVE-Li possesses a sandwich-like trilayer structure, which consists of an upper electron-insulating layer and a bottom lithiophilic layer that synergistically guides the Li deposition from the bottom up, and a middle porous layer that eliminates volume expansion. This sandwich structure eliminates dendrite formation, prevents volume change during cycling, and provides outstanding flexibility to the Li-metal anode even at a practical areal capacity over 3.0 mAh cm
Databáze: OpenAIRE
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