Reviving lithium cobalt oxide-based lithium secondary batteries-toward a higher energy density

Longlong Wang, Bingbing Chen, Jun Ma, Guanglei Cui, Liquan Chen

Research output: Contribution to journalReview articlepeer-review

399 Scopus citations

Abstract

By breaking through the energy density limits step-by-step, the use of lithium cobalt oxide-based Li-ion batteries (LCO-based LIBs) has led to the unprecedented success of consumer electronics over the past 27 years. Recently, strong demands for the quick renewal of the properties of electronic products every so often have resulted in smarter, larger screened, more lightweight devices with longer standby times that have pushed the energy density of LCO-based LIBs nearly to their limit. As a result, with the aim of achieving a higher energy density and lifting the upper cut-off voltage of LCO above 4.45 V (vs. Li/Li+), the development of LCO-based all-solid-state lithium batteries (ASSLBs) with a Li metal anode and LCO-based full cells with high-performance anodes have become urgent scientific and technological requirements. This review summarizes the key challenges of synthesizing LCO-based LBs with a higher energy density from the perspectives of structure and interface stability, and gives an account of effective modification strategies in view of the electrodes, liquid electrolytes, binders, separators, solid electrolytes and LCO-based full cells. The improvement mechanisms of these modification strategies and the controversy over them are also analyzed critically. Moreover, some perspectives regarding the remaining challenges for LCO-based LBs towards a higher energy density and possible future research focuses are also presented.

Original languageEnglish
Pages (from-to)6505-6602
Number of pages98
JournalChemical Society Reviews
Volume47
Issue number17
DOIs
StatePublished - 28 Aug 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018 The Royal Society of Chemistry.

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