Jump to main content
Jump to site search


A rationally assembled graphene nanoribbon/graphene framework for high volumetric energy and power density Li-ion batteries

Author affiliations

Abstract

High volumetric energy and power densities are crucial for Li-ion batteries, which are however hindered by the loose structure and/or insufficient conductivity of conventional electrode laminates. Herein, an efficiently conductive framework of graphene nanoribbons (GNRs) and graphene (G) is rationally constructed to wrap LiFePO4 (LFP) into a binder-free dense electrode by a coupling technique of spray deposition and vacuum filtration. The spray ensures a uniform mixing of LFP, G and GNRs, meanwhile the vacuum filtration leads to a dense packing of the mixture. With only 2 wt% of G and GNRs, the LFP/GNR/G electrode delivers a high rate capability and a stable (dis)charge cycling performance under high LFP loading conditions. Moreover, the dense LFP/GNR/G electrode exhibits superior volumetric properties among all the reported LFP electrodes on the basis of the entire electrode volume, including a Li storage capacity of 318 A h L−1, an energy density of 1020 W h L−1 and a power density of 5.1 kW L−1 at 5C rate. This unique assembly strategy and the electrode structure pave a new way for high-volumetric-performance batteries.

Graphical abstract: A rationally assembled graphene nanoribbon/graphene framework for high volumetric energy and power density Li-ion batteries

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Jan 2018, accepted on 16 Mar 2018 and first published on 21 Mar 2018


Article type: Paper
DOI: 10.1039/C8NR00692J
Citation: Nanoscale, 2018, Advance Article
  •   Request permissions

    A rationally assembled graphene nanoribbon/graphene framework for high volumetric energy and power density Li-ion batteries

    L. Gao, Y. Jin, X. Liu, M. Xu, X. Lai and J. Shui, Nanoscale, 2018, Advance Article , DOI: 10.1039/C8NR00692J

Search articles by author

Spotlight

Advertisements