3D holey-graphene frameworks cross-linked with encapsulated mesoporous amorphous FePO4 nanoparticles for high-power lithium-ion batteries

Runwei Mo, David Rooney, Kening Sun, Jian Nong Wang

Research output: Contribution to journalArticlepeer-review

Abstract

The nanostructured design of electrode materials is a potential strategy to enhance the electrochemical performance of lithium-ion batteries but are usually limited to electrodes with the low mass loading, which rapidly diminish in the total energy-power-density of practical device. Herein, we develop an effective solution for designing 3D holey-graphene frameworks cross-linked with encapsulated mesoporous amorphous FePO4 nanoparticles through microemulsion system. High-mass-loading electrodes with high reversible capacity (156 mA h g−1 under 0.5C), ultra-high rate capability (76 mA h g−1 under 50C), and outstanding cycle stability (>95% reversible capacity retention over 500 cycles) were achieved. Adaption of such material leads to high-mass-loading electrodes with energy and power density as high as 152 W h Kg−1 and 71 W h Kg−1 at 152 W Kg−1 and 3550 W Kg−1, respectively, which represents a key step in promoting practical applications. This study provides an innovative approach to design high-energy-power electrode material in advanced electrochemical energy storage device.
Original languageEnglish
Article number128475
JournalChemical Engineering Journal
Volume417
Early online date13 Jan 2021
DOIs
Publication statusEarly online date - 13 Jan 2021

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