Coral-shaped porous LiFePO4/graphene hybrids for high rate and all-climate battery applications

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2019-01-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
Series
Energy Storage Materials
Abstract
Tailor-designed cathode materials are essential for Li-ion batteries with both high energy density and outstanding capacity retention. Here we have designed and fabricated coral-shaped hierarchical porous LiFePO4/graphene hybrids for lithium-ion batteries. These novel hybrid materials exhibit excellent electrochemical performance over a wide temperature range from −40 ​°C to +60 ​°C. Even at −40 ​°C, the hybrid cathode can deliver a high initial capacity of 120 ​mAhg−1 and still maintain a discharge capacity of 80 mAhg−1 after 500 cycles with a very low capacity loss of 0.066% per cycle. The excellent wide-temperature performance can be ascribed to the porous structure and fast ion/electronic transport kinetics of the high conductive framework.
Description
Keywords
All-climate, Graphene, Hierarchical porous structures, Li-ion battery, LiFePO
Other note
Citation
Fan, Q, Zhang, Y, Xu, Q, Wang, J, Lei, L, Sun, Y & Lund, P D 2019, ' Coral-shaped porous LiFePO 4 /graphene hybrids for high rate and all-climate battery applications ', Energy Storage Materials . https://doi.org/10.1016/j.ensm.2019.06.020