Energy Accumulation Enabling Fast Synthesis of Intercalated Graphite and Operando Decoupling for Lithium Storage

Zhao Wang, Chang Yu, Huawei Huang, Wei Guo, Changtai Zhao, Weicheng Ren, Yuanyang Xie, Jieshan Qiu

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Metal chloride-intercalated graphite with multiple/versatile functions is one of the promising categories for charge storage, especially in achieving high volumetric and gravimetric performance simultaneously. Herein, a novel field-induced energy accumulation strategy is proposed and demonstrated to achieve minute-level fast preparation of stage-1 dominated FeCl3-graphite intercalation compounds (GICs). The microwave-induced Joule heat and electron excitation from the graphite conjugated system produce the arc plasmas with high energy density in the limited microenvironment, accompanied by the enhanced internal energy of gaseous reactant molecules and the strengthened intercalation reaction kinetics. When evaluating the anode for lithium storage, the FeCl3-graphite intercalation compounds feature the promoted self-activation characteristics and deliver a high volumetric capacity up to 1650 mAh cm−3. In particular, with the assistance of the operando Raman technique, it is interesting to find that the electronic decoupling effect among graphite and FeCl3 layers is responsible for the self-activation process. Thus, it is reasonable to believe that this work can further offer an insightful and referable idea into the in-depth investigation of metal chloride intercalated graphite, especially for applications in lithium storage.
Original languageEnglish (US)
JournalAdvanced Functional Materials
Volume31
Issue number15
DOIs
StatePublished - Apr 1 2021
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-21

ASJC Scopus subject areas

  • General Chemical Engineering
  • Electronic, Optical and Magnetic Materials

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