Electrochemical properties of Li4Ti5O12 as cathode material for a hybrid electrochemical capacitor

WU Ke; CHOU Weihua; CAO Gaoping; ZHOU Guozhi

doi:10.13374/j.issn1001-053x.2006.10.031

Volume 28 Issue 10

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WU Ke, CHOU Weihua, CAO Gaoping, ZHOU Guozhi. Electrochemical properties of Li4Ti5O12 as cathode material for a hybrid electrochemical capacitor[J]. Chinese Journal of Engineering, 2006, 28(10): 951-955. doi: 10.13374/j.issn1001-053x.2006.10.031

Citation:

WU Ke, CHOU Weihua, CAO Gaoping, ZHOU Guozhi. Electrochemical properties of Li₄Ti₅O₁₂ as cathode material for a hybrid electrochemical capacitor[J]. Chinese Journal of Engineering, 2006, 28(10): 951-955. doi: 10.13374/j.issn1001-053x.2006.10.031

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Electrochemical properties of Li₄Ti₅O₁₂ as cathode material for a hybrid electrochemical capacitor

doi: 10.13374/j.issn1001-053x.2006.10.031

1. Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China;
2. Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China;
3. Beijing Chemical Defense Institute, Beijing 100083, China

Received Date: 2005-08-05
Rev Recd Date: 2006-03-16

Available Online: 2021-08-24

Abstract

Abstract

The effects of high temperature solid state synthesis condition on the structure, micro-morphology, pore diameter distribution and electrochemical properties of spinel Li₄Ti₅O_l2 for an Li₄Ti₅O₁₂/C hybrid electrochemical capacitor were investigated by XRD, SEM, BET and charge/discharge tests. The results show that the Li₄Ti₅O₁₂ sample obtained at 800℃ for 2 h has rich mesopores and exhibits better electrochemical properties. Its BET surface area reaches 4.4 m²·g^-1 the specific capacity reaches approximately 150 mAh·g^-1 when charged and discharged at 175 mÅg^-l and the power performance and cyclelife is superior.
- Li₄Ti₅O₁₂,
- electrochemical capacitor,
- cathode material,
- high temperature solid-state synthesis