A High Rate, High Capacity and Long Life (LiFePO4+AC)/Li4Ti5O12 Hybrid Battery-Supercapacitor

Xue Bu Hu; Zi Ji Lin; Yong Long Zhang

doi:10.4028/www.scientific.net/AMR.936.496

Paper Titles

A Novel Route to Prepare Titanium Doped Mesoporous Carbon
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A Novel Synthesis of Nanometer Spherical β-Ni(OH)₂ Cathode Materials with High Electrochemical Performances
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A High Rate, High Capacity and Long Life (LiFePO₄+AC)/Li₄Ti₅O₁₂ Hybrid Battery-Supercapacitor
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Hydrogen Storage Mechanism of Fe₃O₄: A First-Principles Study
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Phase Field Crystal Study for the Effect of Heating Rate on the Premelting of Grain Boundary
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 936A High Rate, High Capacity and Long Life...

A High Rate, High Capacity and Long Life (LiFePO₄+AC)/Li₄Ti₅O₁₂ Hybrid Battery-Supercapacitor

Abstract:

A hybrid battery-supercapacitor (LiFePO₄+AC)/Li₄Ti₅O₁₂ using a Li₄Ti₅O₁₂ anode and a LiFePO₄/activated carbon (AC) composite cathode was built. The electrochemical performances of the hybrid battery-supercapacitor (LiFePO₄+AC)/Li₄Ti₅O₁₂ were characterized by constant current charge-discharge, rate charge-discharge, electrochemical impedance spectra, internal resistance, leakage current, self-discharge and cycle performance testing. The results show that (LiFePO₄+AC)/Li₄Ti₅O₁₂ hybrid battery-supercapacitors have rapid charge-discharge performance, high energy density, long cycle life, low resistance, low leakage current and self-discharge rate, which meet the requirements of practical power supply and can be applied in auxiliary power supplies for hybrid electric vehicles. At 4C rate, the capacity loss of (LiFePO₄+AC)/Li₄Ti₅O₁₂ hybrid battery-supercapacitors in constant current mode is no more than 7.71% after 2000 cycles, and the capacity loss in constant current-constant voltage mode is no more than 4.51% after 1500 cycles.

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Periodical:

Advanced Materials Research (Volume 936)

Pages:

496-502

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.936.496

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Online since:

June 2014

Authors:

Xue Bu Hu*, Zi Ji Lin, Yong Long Zhang

Keywords:

(LiFeO₄+AC)/Li₄Ti₅O₁₂, High Capacity, High Rate, Hybrid Battery-Supercapacitor, Long Life

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