Size dependence of transport non-uniformities on localized plating in lithium-ion batteries

Xinyi M. Liu, Alta Fang, Mikko Petteri Haataja, Craig B. Arnold

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Plating in lithium-ion batteries not only reduces their lifetime, but also raises safety concerns. Preventing metallic lithium from forming is difficult, as the heterogeneity of materials typically used in batteries can create transport non-uniformities, which can lead to unanticipated local plating. Therefore, being able to predict the occurrence of plating due to a non-uniformity of a certain shape and size becomes essential. In this study, we probe the importance of the size scale and geometry on localized plating through numerical simulations and experiments. Using modified separators to create transport non-uniformities, we show that certain geometric features lead to more vulnerability to plating, and localization strongly depends on size. A single large feature in a separator induces more plating than a collection of smaller features with same total area. Our findings help elucidate the fundamentals behind heterogeneous plating, which can provide practical insights into battery safety and product control.

Original languageEnglish (US)
Pages (from-to)A1147-A1155
JournalJournal of the Electrochemical Society
Volume165
Issue number5
DOIs
StatePublished - Jan 1 2018

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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