Journal
NATURE REVIEWS MATERIALS
Volume 6, Issue 4, Pages 313-331Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41578-020-00261-0
Keywords
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Funding
- Samsung Electronics
- NGK Inc.
- Swiss National Science Foundation [BSSGI0_155986]
- National Science Foundation MRSEC Program [DMR-1419807]
- US-Israel Fulbright Program
- Zuckerman Israeli Postdoctoral Scholars Program
- MIT-Technion Postdoctoral Fellowship
- Thomas Lord Foundation
- Swiss National Science Foundation (SNF) [BSSGI0_155986] Funding Source: Swiss National Science Foundation (SNF)
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This review explores the chemistry and thin-film processing of Li oxides and highlights their potential integration in microbatteries, neuromorphic computing, and sensors. Thin-film Li oxides offer fast Li-ion movement and electronic-state changes, leading to improved energy and information density, cycle speed, and endurance in Li-conductor-based devices. Additionally, a future vision is provided for lithionic devices utilizing Li-based ceramics in microdevices beyond batteries.
The search for alternatives to traditional Li-ion batteries has sparked interest in the chemistry and manufacturing of solid-state Li-ion conductors. Li-ion conductors are traditionally processed as millimetre-sized pellets using conventional ceramic-processing routes. However, in thin-film form, Li-ion conductors offer applications beyond energy storage, including artificial intelligence, in-memory computing and smart sensing. In this Review, we examine the chemistry and thin-film processing of Li oxides and discuss challenges and opportunities for the integration of Li-oxide films in microbatteries for energy storage, neuromorphic computation mimicking human-brain operations and sensors for toxins and greenhouse gases. Li oxides in thin-film form provide fast Li-ion movement and connected electronic-state changes, which improve energy and information density and increase cycle speed and endurance of Li-conductor-based devices. Finally, we provide a future vision of lithionic devices integrating Li-based ceramics for the design of microdevices beyond batteries. This Review discusses functional Li-ceramic films for lithionic-device applications, including energy storage, sensing and neuromorphic computing.
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