Details

Autor(en) / Beteiligte

• Zhang, Chao-Hui
• Guo, Yu-Jie
• Tan, Shuang-Jie
• Wang, Yu-Hao
• Guo, Jun-Chen
• Tian, Yi-Fan
• Zhang, Xu-Sheng
• Liu, Bo-Zheng
• Xin, Sen
• Zhang, Juan
• Wan, Li-Jun
• Guo, Yu-Guo

Titel

An ultralight, pulverization-free integrated anode toward lithium-less lithium metal batteries

Ist Teil von

• Science advances, 2024-03, Vol.10 (13), p.eadl4842-eadl4842

Ort / Verlag

United States

Erscheinungsjahr

2024

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The high-capacity advantage of lithium metal anode was compromised by common use of copper as the collector. Furthermore, lithium pulverization associated with "dead" Li accumulation and electrode cracking deteriorates the long-term cyclability of lithium metal batteries, especially under realistic test conditions. Here, we report an ultralight, integrated anode of polyimide-Ag/Li with dual anti-pulverization functionality. The silver layer was initially chemically bonded to the polyimide surface and then spontaneously diffused in Li solid solution and self-evolved into a fully lithiophilic Li-Ag phase, mitigating dendrites growth or dead Li. Further, the strong van der Waals interaction between the bottommost Li-Ag and polyimide affords electrode structural integrity and electrical continuity, thus circumventing electrode pulverization. Compared to the cutting-edge anode-free cells, the batteries pairing LiNi Mn Co O with polyimide-Ag/Li afford a nearly 10% increase in specific energy, with safer characteristics and better cycling stability under realistic conditions of 1× excess Li and high areal-loading cathode (4 milliampere hour per square centimeter).