DataVXACS Applied Energy MaterialsPaper
journal article·2022-11-28

Ultrafast Crystallization and Sintering of Li1.5Al0.5Ge1.5(PO4)3 Glass and Its Impact on Ion Conduction

Antonino Curcio, Antonio Gianfranco Sabato, Marc Nuñez Eroles, Juan Carlos Gonzalez-Rosillo, Alex Morata, Albert Tarancón, Francesco Ciucci

ACS Applied Energy Materials· Volume 5· Issue 11
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Source abstract

Abstract

Li1.5Al0.5Ge1.5(PO4)3 (LAGP) is among the most promising solid electrolytes for the next generation’s all-solid-state lithium batteries. However, preparing LAGP electrolytes is time- and energy-intensive. In this work, LAGP glassy powders were sintered and crystallized in 180 s by ultrafast high-temperature sintering (UHS) under conditions attractive for continuous industrial processes (i.e., ambient pressure and atmosphere). The fast heating rates characteristic of UHS significantly delay crystallization, potentially decoupling crystallization and sintering. Furthermore, electrochemical impedance spectroscopy (EIS) characterizations reveal that LAGP sintered and crystallized by UHS has an ionic conductivity of 1.15 × 10–4 S/cm, slightly lower than conventionally annealed samples (1.75 × 10–4 S/cm). The lower conductivity can be attributed to poorer intergrain contact. To overcome this issue, additives such as B2O3 and Li3BO3 are used, resulting in ∼2 and ∼5 times higher grain boundary conductivity for LAGP+1 wt % B2O3 and LAGP+1 wt % Li3BO3, respectively, compared to LAGP. Overall, this work provides insights into unraveling the impact of UHS sintering on the LAGP Li+ conduction mechanism.
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Research context

Energy storageCeramics & glasses

OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Ferroelectric and Piezoelectric Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China

Department of Advanced Materials for Energy, Catalonia Institute for Energy Research (IREC), Jardins de Les Dones de Negre 1, 08930Sant Adrià del Besòs, Barcelona, Spain

Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys 23, 08010Barcelona, Spain

Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China

HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute, 518049Shenzhen, China

HKUST Energy Institute, The Hong Kong University of Science and Technology, Hong Kong SAR, China

Funding

Research Grants Council, University Grants Committee · Ministerio de Ciencia e Innovaci?n · H2020 Marie Sklodowska-Curie Actions · Generalitat de Catalunya · Hetao Shenzhen-Hong Kong Science and Technology Innovation Cooperation Zone · Ag?ncia per a la Competitivitat de l'Empresa

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