%0 Journal Article
%T Self-smoothing anode for achieving high-energy lithium metal batteries under realistic conditions
%J -
%D 2019
%R https://doi.org/10.1038/s41565-019-0427-9
%X Despite considerable efforts to stabilize lithium metal anode structures and prevent dendrite formation, achieving long cycling life in high-energy batteries under realistic conditions remains extremely difficult due to a combination of complex failure modes that involve accelerated anode degradation and the depletion of electrolyte and lithium metal. Here we report a self-smoothing lithium¨Ccarbon anode structure based on mesoporous carbon nanofibres, which, coupled with a lithium nickel¨Cmanganese¨Ccobalt oxide cathode with a high nickel content, can lead to a cell-level energy density of 350¨C380£¿Wh£¿kg£¿1 (counting all the active and inactive components) and a stable cycling life up to 200 cycles. These performances are achieved under the realistic conditions required for practical high-energy rechargeable lithium metal batteries: cathode loading ¡Ý4.0£¿mAh£¿cm£¿2, negative to positive electrode capacity ratio ¡Ü2 and electrolyte weight to cathode capacity ratio ¡Ü3£¿g£¿Ah£¿1. The high stability of our anode is due to the amine functionalization and the mesoporous carbon structures that favour smooth lithium deposition
%U https://www.nature.com/articles/s41565-019-0427-9