%0 Journal Article
%T Enabling Lithium-Metal Anode Encapsulated in a 3D Carbon Skeleton with a Superior Rate Performance and Capacity Retention in Full Cells
%J -
%D 2018
%R https://doi.org/10.1021/acsami.8b13506
%X Suppressing the formation of lithium (Li) dendrites is central to implementing Li-metal anode, which has gained growing attention due to its ultrahigh specific capacity and low redox potential. Here, a novel approach is adopted to deposit Li-metal within a rigid three-dimensional (3D) carbon paper (3DCP) network, which consists of a cross-link framework of carbon fibers and graphene nanosheets (GNs). This unique structure yields a uniform distribution of Li-nuclei during the preliminary stage of Li-plating and the formation of a stable solid¨Celectrolyte interface. The as-obtained anode can deliver a high areal capacity of 10 mAh cm¨C2 without the dendritic formation after 1000 cycles in a [email protected]/LiFePO4 full cell at 4 C. In addition, the [email protected] anode displays low voltage platform (<20 mV at 1 mA cm¨C2), high plating/stripping efficiency (99.0%), and long lifespan (>1000 h). When coupled with LiNi0.8Co0.15Al0.05O2 cathode, the [email protected] electrode exhibits a superior rate capability up to 10 C and high temperature performance (60 ¡ãC). The unprecedented performance is attributed to the desirable combination of micro/nanostructures in 3DCP, in which carbon fiber framework provides the mechanical stability for volume change, whereas numerous lithiophilicity sites on GNs enable the suppression of Li-dendrite growth
%U https://pubs.acs.org/doi/10.1021/acsami.8b13506