%0 Journal Article
%T Compact Lithium-Ion Battery Electrodes with Lightweight Reduced Graphene Oxide/Poly(Acrylic Acid) Current Collectors
%J -
%D 2019
%R https://doi.org/10.1021/acsaem.8b02007
%X We report the fabrication and electrochemical performance of metal-foil free Li4Ti5O12 (LTO) and LiNi1/3Co1/3Mn1/3O2 (NCM) electrodes supported on conductive and porous reduced graphene oxide/poly(acrylic acid) (rGO-PAA) aerogels. The highly porous rGO-PAA (‵6 mg cm每3) enables slurry infiltration of LTO and NCM to form composite electrodes with tunable mass loadings (‵3每30 mg cm每2), and the resultant composites can withstand 100-fold compression (from 3.2 mm to ‵30每130 米m) to achieve electrode densities of 2每3 g cm每3. The adequate compressibility of the rGO-PAA coupled with removal of the conventional metal-foil weight and volume provides high volumetric energy densities of 1723 Wh L每1 for NCM and 625 Wh L每1 for LTO at low power density, representing a 25% increase in energy density over similar electrodes built with metal-foil current collectors. These metrics demonstrate the utility of the rGO-PAA current collector to reduce the weight and volume of lithium-ion electrodes without sacrificing energy density
%U https://pubs.acs.org/doi/10.1021/acsaem.8b02007