材料科学
导电体
阳极
金属
金属有机骨架
电导率
电阻率和电导率
纳米技术
复合材料
工程物理
光电子学
电极
冶金
电气工程
有机化学
化学
物理化学
吸附
工程类
作者
Yiming Jin,In‐Hwan Lee,T. Gu,Su‐Ho Jung,Hongjun Chang,Byung‐Sung Kim,Janghyuk Moon,Dongmok Whang
标识
DOI:10.1002/adfm.202310097
摘要
Abstract Lithium (Li) metal, with its unparalleled theoretical capacity and lowest electrochemical potential, is a promising anode material for rechargeable batteries. Yet, challenges such as dendrite formation, severe electrode volume change, and ongoing Li consumption impede its practical adoption. To address these challenges, a novel approach is introduced, harnessing the switchable electrical conductivity of a nanoporous current collector for Li metal anode. A vertically aligned Nickel‐catecholate (VANC) is directly grown on the copper foil as the nanoporous current collector, and the Li intercalation and de‐intercalation of VANC reversibly decrease and increase the electrical conductivity in the direction perpendicular to the electrode, respectively. The switchable conductivity induces uniform deposition and stripping of Li metal without forming dendrite and dead Li during the Li plating/stripping process and thus enables high coulombic efficiency of over 98% even after 200 cycles. This nanoporous structure with switchable conductivity will open up a new path for reliable lithium metal anode for rechargeable battery applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI