A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Electrochemical performance of lithium ion capacitors using aqueous electrolyte at high temperature
Aqueous lithium ion capacitors (LICs) with LiFePO4 positive electrodes and activated carbon (AC) negative electrodes were developed and their electrochemical performances were investigated by cyclic voltammetry, galvanostatic charge/discharge, and ac impedance spectroscopy at various temperatures. It is found that the stable voltage window for the aqueous LICs is 0–1.7 V and the optimized mass ratio between the positive electrode and negative electrode is 1:1. The rate capability of the LIC is much higher than that of the LiFePO4 electrodes. The Ohmic resistance and electrochemical impedance of the LiFePO4 and AC electrodes decrease with increasing the temperature, leading to high rate capability of the LIC. The performance of the LIC is deteriorated when it is cycled at 70 °C which is caused by the reduction of Fe2+ in LiFePO4.
Electrochemical performance of lithium ion capacitors using aqueous electrolyte at high temperature
Aqueous lithium ion capacitors (LICs) with LiFePO4 positive electrodes and activated carbon (AC) negative electrodes were developed and their electrochemical performances were investigated by cyclic voltammetry, galvanostatic charge/discharge, and ac impedance spectroscopy at various temperatures. It is found that the stable voltage window for the aqueous LICs is 0–1.7 V and the optimized mass ratio between the positive electrode and negative electrode is 1:1. The rate capability of the LIC is much higher than that of the LiFePO4 electrodes. The Ohmic resistance and electrochemical impedance of the LiFePO4 and AC electrodes decrease with increasing the temperature, leading to high rate capability of the LIC. The performance of the LIC is deteriorated when it is cycled at 70 °C which is caused by the reduction of Fe2+ in LiFePO4.
Electrochemical performance of lithium ion capacitors using aqueous electrolyte at high temperature
Yan, Jingwang (author) / Sun, Yuanyuan (author) / Jiang, Liang (author) / Tian, Ying (author) / Xue, Rong (author) / Hao, Lixing (author) / Liu, Wei (author) / Yi, Baolian (author)
Journal of Renewable and Sustainable Energy ; 5 ; 021404-
2013-03-01
10 pages
Article (Journal)
Electronic Resource
English
Electrochemical Behavior of LiFePO~4 in Aqueous Lithium Hydroxide Electrolyte
| British Library Online Contents | 2006
Electrochemical Behavior of Nickel-Chromium Alloys in a High-Temperature Aqueous Electrolyte
| British Library Online Contents | 2003
Asymmetric electrochemical capacitors-Stretching the limits of aqueous electrolytes
| British Library Online Contents | 2011
Biomass derived anode for high-electrochemical performance potassium-ion capacitors
| DOAJ | 2020
Miniature wire-shaped solar cells, electrochemical capacitors and lithium-ion batteries
| British Library Online Contents | 2014