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Analysis of Secondary Battery Trends Using Topic Modeling: Focusing on Solid-State Batteries

Asian Journal of Innovation and Policy / Asian Journal of Innovation and Policy, (P)2287-1608; (E)2287-1616
2023, v.12 no.3, pp.345-362
https://doi.org/10.7545/AJIP.2023.12.3.345
도충현 (한국화학연구원)
김용진 (한국화학연구원)
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Abstract

As the widespread adoption and proliferation of electric vehicles continue, the secondary battery market is experiencing rapid growth. However, lithium-ion batteries, which constitute a majority of secondary batteries, present high risks of fire and explosion. Solid-state batteries are thus garnering attention as the next-generation batteries since they eliminate fire hazards and significantly reduce the risk of explosions. Against this background, the study aimed to analyze research trends and provide insights by examining 2,927 domestic papers related to solid-state batteries over the past decade (2013–2022). Specifically, we used topic modeling to extract major keywords associated with solid-state batteries research and to explore the network characteristics across major topics. The changes in research on solid-state batteries were analyzed in-depth by calculating topic dominance by year. The findings provide an overview of the emerging trends in domestic solid-state battery research, and might serve as a valuable reference in shaping long-term research directions.

keywords
Secondary battery, Solid-state battery, Topic modeling, LDA, Latent dirichlet allocation

Asian Journal of Innovation and Policy