预嵌锂多壁碳纳米管的性能
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摘要
使用稳定锂金属粉末(SLMP)/多壁碳纳米管(MWCNTs)作为负极、以活性炭(AC)作为正极组装锂离子电容器,研究其电化学性能。根据恒流充放电(GCD)和交流阻抗谱(EIS)研究了预嵌锂前后锂离子电容器的电化学性能。结果表明,嵌入适量的SLMP可消除碳纳米管大部分固有的不可逆容量并提高电容器的电化学性能。这种电容器具有较高的能量密度、功率密度和优异的循环性能。电流密度为0.05 A/g时预嵌锂碳纳米管锂离子电容器的比电容达到85.18 F/g,电流密度为0.05～4 A/g时最大能量密度和最大功率密度分别为140.4 Wh/kg和5.25 KW/kg,经过3000次循环后容量保持率仍约为82%。
The electrochemical performance of lithium-ion capacitors with stabilized lithium metal powder/multi-walled carbon nanotubes composite as anode and activated carbon as cathode was investigated by means of galvanostatic charge/discharge(GCD) tests and electrochemical impedance spectroscopy(EIS). The results show that the introduction of stabilized lithium metal powder can eliminate the majority of the inherent irreversible capacity of carbon nanotubes and greatly improve the electrochemical performance of lithium-ion capacitors. The lithium-ion capacitors have a specific capacitance of 85.18 F/g at the current density of 0.05 A/g. The maximum energy density and power density reached 140.4 Wh/kg and 5.25 KW/kg respectively in the current range of 0.05～4 A/g. The continuous galvanostatic charge-discharge cycling tests revealed that the lithium-ion capacitors could maintain 82% of the capacity after3000 cycles. In sum, the lithium-ion capacitors showed an excellent cycle performance with high energy and power density.
The electrochemical performance of lithium-ion capacitors with stabilized lithium metal powder/multi-walled carbon nanotubes composite as anode and activated carbon as cathode was investigated by means of galvanostatic charge/discharge(GCD) tests and electrochemical impedance spectroscopy(EIS). The results show that the introduction of stabilized lithium metal powder can eliminate the majority of the inherent irreversible capacity of carbon nanotubes and greatly improve the electrochemical performance of lithium-ion capacitors. The lithium-ion capacitors have a specific capacitance of 85.18 F/g at the current density of 0.05 A/g. The maximum energy density and power density reached 140.4 Wh/kg and 5.25 KW/kg respectively in the current range of 0.05～4 A/g. The continuous galvanostatic charge-discharge cycling tests revealed that the lithium-ion capacitors could maintain 82% of the capacity after3000 cycles. In sum, the lithium-ion capacitors showed an excellent cycle performance with high energy and power density.
引文
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[2]Wang H,Zhang Y,Ang H,et al.A high-energy lithium-ion capacitor by integration of a 3D interconnected titanium carbide nanoparticle chain anode with a pyridine-derived porous nitrogen-doped carbon cathode[J].Adv.Funct.Mater.,2016,26(18):3082
[3]Hosseinzadeh E,Genieser R,Worwood D,et al.A systematic approach for electrochemical-thermal modelling of a large format lithium-ion battery for electric vehicle application[J].J.Power Sources,2018,382:77
[4]Hao Z Q,Cao J P,Wu Y,et al.Preparation of porous carbon sphere from waste sugar solution for electric double-layer capacitor[J].J.Power Sources,2017,361:249
[5]Du H,Yang H,Huang C,et al.Graphdiyne applied for lithium-ion capacitors displaying high power and energy densities[J].Nano Energy,2016,22:615
[6]Sun X,Zhang X,Liu W,et al.Electrochemical performances and capacity fading behaviors of activated carbon/hard carbon lithium ion capacitor[J].Electrochim.Acta,2017,235
[7]Zhang J,Wang J,Shi Z Q.Research progress of carbon-based lithium ion capacitor[J].Energy Storage Sci.Technol.,2016,5(6):807(张进,王静,时志强.炭基锂离子电容器的研究进展[J].储能科学与技术,2016,5(6):807)
[8]Ren J J,Su L W,Qin X,et al.Pre-lithiated graphene nanosheets as negative electrode materials for Li-ion capacitors with high power and energy density[J].J.Power Sources,2014,264(264):108
[9]Fan K,Tian Y,Zhang X,et al.Application of stabilized lithium metal powder and hard carbon in anode of lithium-sulfur battery[J].J.Electroanal.Chem.,2016,760:80
[10]Zhang S H,Chi C X,Zhang S W.New progress on prelithiation in Li-ion batteries[J].Chinese Journal of Power Sources,2015,39(7):1543(张双虎,迟彩霞,张盛武.锂离子电池预嵌锂技术的最新研究进展[J].电源技术,2015,39(7):1543)
[11]Jin Z,Liu X,Jing W,et al.Different types of pre-lithiated hard carbon as negative electrode material for lithium-ion capacitors[J].Electrochim.Acta,2016,187:134
[12]Yuan M,Liu W,Zhu Y,et al.Electrochemical performance of prelithiated graphite as negative electrode in lithium-ion capacitors[J].Russ.J.Electrochem.,2014,50(11):1050
[13]Sivakkumar S R,Pandolfo A G.Evaluation of lithium-ion capacitors assembled with pre-lithiated graphite anode and activated carbon cathode[J].Electrochim.Acta,2012,65:280
[14]Gao X,Zhan C,Yu X,et al.A high performance lithium-ion capacitor with both electrodes prepared from sri lanka graphite ore[J].Materials,2017,10(4)
[15]Barcellona S,Ciccarelli F,Iannuzzi D,et al.Overview of lithiumion capacitor applications based on experimental performances[J].Electric Machines&Power Systems,2016,44(11):1248
[16]Jayasinghe R,Thapa A K,Dharmasena R R,et al.Optimization of multi-walled carbon nanotube based CFx,electrodes for improved primary and secondary battery performances[J].J.Power Sources,2014,253(5):404
[17]Howe J Y,Boatner L A,Kolopus J A,et al.Vacuum-tight sample transfer stage for a scanning electron microscopic study of stabilized lithium metal particles[J].J.Mater.Sci.,2012,47(3):1572
[18]Ai G,Wang Z,Zhao H,et al.Scalable process for application of stabilized lithium metal powder inLi-ion batteries[J].J.Power Sources,2016,309:33
[19]Kim M,Xu F,Jin H L,et al.A fast and efficient pre-doping approach to high energy density lithium-ion hybrid capacitors[J].J.Mater.Chem.A,2014,2(26):10029
[20]Jarvis C R,Lain M J,Gao Y,et al.A lithium ion cell containing a non-lithiated cathode[J].J.Power Sources,2005,146(1-2):331
[21]Ping L N,Zheng J M,Shi Z Q,et al.Electrochemical Performance of Lithium Ion Capacitors Using Li+-Intercalated Mesocarbon Microbeads as the Negative Electrode[J].Acta Phys.Chim.Sin.,2012,28(7):1733(平丽娜,郑嘉明,时志强等.以预嵌锂中间相碳微球为负极的锂离子电容器的电化学性能[J].物理化学学报,2012,28(7):1733)
[22]Zhang J,Shi Z,Wang J,et al.Composite of mesocarbon microbeads/hard carbon as anode material for lithium ion capacitor with high electrochemical performance[J].J.Electroanal.Chem.,2015,747:20
[23]Tao H,Mukoyama D,Nara H,et al.Electrochemical impedance spectroscopy analysisfor lithium-ion battery using Li4Ti5O12anode[J].J.Power Sources,2013,222(2):442
[24]Dokko K,Fujita Y,Mohamedi M,et al.Electrochemical impedance study of Li-ion insertion into mesocarbon microbead single particle electrode:Part II.Disordered carbon[J].Electrochim.Acta,2003,47(6):933
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[26]Cao W J,Zheng J P.The effect of cathode and anode potentials on the cycling performance of Li-ion capacitors[J].Journal of the Electrochemical Society,2013,160(9):A1572