Scalable functionalized graphene nano-platelets as tunable cathodes for high-performance lithium rechargeable batteries.

ABSTRACT: High-performance and cost-effective rechargeable batteries are key to the success of electric vehicles and large-scale energy storage systems. Extensive research has focused on the development of (i) new high-energy electrodes that can store more lithium or (ii) high-power nano-structured electrodes hybridized with carbonaceous materials. However, the current status of lithium batteries based on redox reactions of heavy transition metals still remains far below the demands required for the proposed applications. Herein, we present a novel approach using tunable functional groups on graphene nano-platelets as redox centers. The electrode can deliver high capacity of ~250 mAh g⁻¹, power of ~20 kW kg⁻¹ in an acceptable cathode voltage range, and provide excellent cyclability up to thousands o

SUBMITTER: Kim H 

PROVIDER: S-EPMC3604708 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature