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

Research output: Contribution to journalArticle

1 Citation (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 (US)
Pages (from-to)1088-1094
Number of pages7
JournalChemNanoMat
Volume4
Issue number10
DOIs
StatePublished - Oct 1 2018

Fingerprint

Graphite
Sintering
Electrodes
Composite materials
Germanium
Solid electrolytes
Aluminum
Densification
Lithium
Thick films
Phosphates
Current density
Processing
Temperature

All Science Journal Classification (ASJC) codes

  • Biomaterials
  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Materials Chemistry

Cite this

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title = "Cold Sintering of a Covalently Bonded MoS2/Graphite Composite as a High Capacity Li–Ion Electrode",
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.",
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Cold Sintering of a Covalently Bonded MoS2/Graphite Composite as a High Capacity Li–Ion Electrode. / Nayir, Selda; Waryoba, Daudi Rigenda; Rajagopalan, Ramakrishnan; Arslan, Cüneyt; Randall, Clive A.

In: ChemNanoMat, Vol. 4, No. 10, 01.10.2018, p. 1088-1094.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Nayir, Selda

AU - Waryoba, Daudi Rigenda

AU - Rajagopalan, Ramakrishnan

AU - Arslan, Cüneyt

AU - Randall, Clive A.

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N2 - 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.

AB - 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.

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