A nanoview of battery operation

Steen Brian Schougaard

Research output: Contribution to journalJournal articleCommunication

Abstract

The redox-active materials in lithium-ion batteries have relatively poor electronic and ionic conduction and may experience stress from charge-discharge volume changes, so their formulation into structures with nanosized features is highly desirable. On page 566 of this issue, Lim et al. (1) characterize individual nanoparticles of the positive electrode material LiFePO4 during charging and discharging. This “in operando” technique ensures that all particles experience the same voltage. The current and lithium concentration are then inferred for individual particles via the change in Fe oxidation state measured during the transformation from LiFePO4 to FePO4 and back.
Original languageEnglish
JournalScience
Volume353
Issue number6299
Pages (from-to)543-544
Number of pages2
ISSN0036-8075
DOIs
Publication statusPublished - 2016

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