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Chemcial Industry and Engineering 2015, Vol. 32 Issue (6) :36-40    DOI: 10.13353/j.issn.1004.9533.20141030
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High Energy Lithium Ion Capacitor with Pre-Lithiated Hard Carbon Anode
Liu Yuanyuan1,3, Shi Zhiqiang2, Qiao Zhijun1,3, Chen Mingming1,3, Wang Chengyang1,3
1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. College of Materials Science and Technology, Tianjin Polytechnic University, Tianjin 300387, China;
3. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China

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Abstract 

Pre-lithiated hard carbon can be obtained by short-circuiting hard carbon anode and lithium sources. Then a lithium ion capacitor is fabricated with the pre-lithiated hard carbon anode and activated carbon cathode. The pre-lithiation time of anode has a great effect on the capacity of lithium ion capacitor. The capacity firstly increases and then decreases with increasing the pre-lithiation time and 15 h is the optimal pre-lithiation time. The capacitor with 15 h pre-lithiation has the maximum specific energy (97.2 Wh·kg-1), maximum specific power (5 412 W·kg-1), minimum resistance and superior cycle performance with an energy retention of 91.2% even after 1 000 cycles at the current density of 1 A·g-1. The outperforming performance is ascribed to the proper working potential of both anode and cathode according to the three electrode data.

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Articles by authors
Liu Yuanyuan
Shi Zhiqiang
Qiao Zhijun
Chen Mingming
Wang Chengyang
Keywordslithium ion capacitor;   activated carbon;   hard carbon;   pre-lithiation time     
Received 2014-03-11;
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Liu Yuanyuan, Shi Zhiqiang, Qiao Zhijun, Chen Mingming, Wang Chengyang.High Energy Lithium Ion Capacitor with Pre-Lithiated Hard Carbon Anode[J]  Chemcial Industry and Engineering, 2015,V32(6): 36-40
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