Void suppressive lithium anodes for all-solid-state batteries.

Void suppression capability in all-solid-state lithium metal batteries is governed by the product of full lithium stripping areal capacity and applied current density, enabling higher critical current density/capacity.

• Why it matters: Void formation and dendrite growth remain unsolved barriers to safe, high-energy all-solid-state lithium metal batteries.
• What they did: The study defines void suppression capability (VSC) from lithium full stripping areal capacity times applied current density, then enhances VSC via higher lithium self-diffusivity and initial lithium atom concentration using Mg-1 wt% La inoculant in molten lithium (LiMgLa).
• The result: LiMgLa anodes increase critical current density/capacity from 1.2 mA cm−2 /0.6 mAh cm−2 to 2.2 mA cm−2 /1.1 mAh cm−2 and support stable plating/stripping for over 1,200 h at 0.7 mA cm−2 at room temperature.

AI summary of the abstract · may contain errors · not medical advice · read the paper.