Cold Sintering of a Covalently Bonded MoS2/Graphite Composite as a High Capacity Li–Ion Electrode

Selda Nayir, Daudi R. Waryoba, Ramakrishnan Rajagopalan*, Cüneyt Arslan, Clive A. Randall

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

ABSTRACT. A cold sintering approach is demonstrated to fabricate highly dense electrochemically active MoS2/graphite (MG) composites with 88% relative density at an extremely low processing temperature of 140 °C. The process provides a pathway to sinter covalently bonded materials effectively to produce either dense or near dense pellets and/or thick films. Composites that include up to 20 wt% graphite, as well as a Li-ionic solid electrolyte (lithium aluminum germanium phosphate) could be easily integrated and densified using this method. Cold sintering also offers an elegant approach to achieve very low interfacial electrode resistances (∼42 Ω cm2) through the densification process. The specific capacity of the fabricated composite electrode was ∼ 950 mAh/g at 0.1 A/g and also displayed good capacity retention at higher current densities.

Original languageEnglish
Pages (from-to)1088-1094
Number of pages7
JournalChemNanoMat
Volume4
Issue number10
DOIs
Publication statusPublished - Oct 2018

Bibliographical note

Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Funding

S.N would like to thank Amanda Baker for her crucial and irreplaceable guidance during experiment design. Moreover, thanks to Steve Perini and Jeff Long for their sustained patience and help in providing technical support for electrical measurements. She also expresses sincere thanks to Nichole Wonderling, Julie Anderson, Max Wetherington and other esteemed staff members in Material Characterization Laboratory (MCL Penn State) for their help with training during the research.

FundersFunder number
Max Wetherington

    Keywords

    • Carbon
    • cold sintering
    • graphite
    • lithium-ion battery
    • MoS

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