A Lithium-ion Battery Using Partially Lithiated Graphite Anode and Amphi-redox LiMn₂O₄ Cathode.

ABSTRACT: Delithiation followed by lithiation of Li⁺-occupied (n-type) tetrahedral sites of cubic LiMn₂O₄ spinel (LMO) at ~4 [Formula: see text] (delivering ~100 mAh g_LMO^-1) has been used for energy storage by lithium ion batteries (LIBs). In this work, we utilized unoccupied (p-type) octahedral sites of LMO available for lithiation at ~3 [Formula: see text] (delivering additional ~100 mAh g_LMO^-1) that have never been used for LIBs in full-cell configuration. The whole capacity of amphi-redox LMO, including both oxidizable n-type and reducible p-type redox sites, at ~200 mAh g_LMO^-1 was realized by using the reactions both at 4 [Formula: see text] and 3 [Formula: see text]. Durable reversibility of the

SUBMITTER: Jeon Y 

PROVIDER: S-EPMC5666002 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature