A bidirectional growth mechanism for a stable lithium anode by a platinum nanolayer sputtered on a polypropylene separator.

ABSTRACT: The issue of uncontrollable Li dendrite growth, caused by irregular lithium deposition, restricts the wide applications of Li metal based high energy batteries. In this paper, a polypropylene separator with a sputtered platinum nanolayer has been developed to improve the stability of the Li metal anodes. It was found that cells using the modified separators resulted in a smooth Li surface and a stable "electrode-electrolyte" interface. On the one hand, platinum nanolayers can enhance the mechanical properties and micro-structures of commercial polypropylene separators. On the other hand, platinum nanolayers provide stable Li deposition during repeated charging/discharging by a bidirectional growth mechanism. After long-time cycling, the dendrites from opposite directions and dead Li are in

SUBMITTER: Wen K 

PROVIDER: S-EPMC9079675 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature