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

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Haegyeom Kim
  • Hee-Dae Lim
  • Sung-Wook Kim
  • Jihyun Hong
  • Dong-Hwa Seo
  • Dae-Chul Kim
  • Sungjin Park
  • Kisuk Kang

Detail(s)

Original languageEnglish
Article number1506
Journal / PublicationScientific Reports
Volume3
Early online date21 Mar 2013
Publication statusPublished - 2013
Externally publishedYes

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 of repeated charge/discharge cycles. The simple, mass-scalable synthetic route for the functionalized graphene nano-platelets proposed in this work suggests that the graphene cathode can be a promising new class of electrode.

Citation Format(s)

Scalable functionalized graphene nano-platelets as tunable cathodes for high-performance lithium rechargeable batteries. / Kim, Haegyeom; Lim, Hee-Dae; Kim, Sung-Wook; Hong, Jihyun; Seo, Dong-Hwa; Kim, Dae-Chul; Jeon, Seokwoo; Park, Sungjin; Kang, Kisuk.

In: Scientific Reports, Vol. 3, 1506, 2013.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review