All-Solid-State Li-Ion Battery Using Li1.5Al0.5Ge1.5(PO4)3 As Electrolyte Without Polymer Interfacial Adhesion

Yedukondalu Meesala, Chen Yu Chen, Anirudha Jena, Yu Kai Liao, Shu Fen Hu, Ho Chang, Ru Shi Liu

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Solid-state lithium-ion batteries are promising candidates for energy storage devices that meet the requirements to reduce CO2 emissions. NASICON-type solid-state electrolytes (SSE) are most promising materials as electrolytes for high-performance lithium ion batteries because of their good stability and high ionic conductivity. In this study, we successfully fabricate NASICON-based Li1.5Al0.5Ge1.5(PO4)3 lithium fast-ion conductors through melt-quenching with post-crystallization. The effect of crystallization temperature on the structure of LAGP and their ionic conductivity is systematically studied using Rietveld analysis of Synchrotron X-ray powder diffraction patterns, multinuclear magnetic resonance, and electrochemical analysis, revealing that the mobility of Li ion is dependent on crystallization temperature. The glass-ceramic LAGP annealed at 800 °C for 8 h exhibits the highest conductivity of 0.5 mS cm-1 at room temperature. Moreover, we report the viability of the prepared LAGP glass-ceramic as a solid electrolyte in Li-ion batteries without polymer adhesion. The cycling of Li/LAGP/LFP all-solid-state cell, provides a stable cycling lifetime of up to 50 cycles. This approach demonstrates that LAGP glass-ceramic can have good contact with the electrodes without interfacial layer and can deliver a reasonable discharge capacity after 50 cycles.

Original languageEnglish
Pages (from-to)14383-14389
Number of pages7
JournalJournal of Physical Chemistry C
Volume122
Issue number26
DOIs
Publication statusPublished - 2018 Jul 5
Externally publishedYes

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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