Carbon coated nano-LiTi2(PO4)3 electrodes for non-aqueous hybrid supercapacitors

被引:266
作者
Aravindan, V. [1 ,2 ]
Chuiling, W. [2 ]
Reddy, M. V. [1 ]
Rao, G. V. Subba [1 ]
Chowdari, B. V. R. [1 ]
Madhavi, S. [2 ,3 ,4 ]
机构
[1] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore
[2] Nanyang Technol Univ, Energy Res Inst ERI N, Singapore 637553, Singapore
[3] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore
[4] Nanyang Technol Univ, TUM CREATE Ctr Electromobil, Singapore 637553, Singapore
基金
新加坡国家研究基金会;
关键词
LITHIUM-ION BATTERIES; ASYMMETRIC SUPERCAPACITOR; CATHODE; LITI2(PO4)(3);
D O I
10.1039/c2cp40603a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070305 [高分子化学与物理];
摘要
The Pechini type polymerizable complex decomposition method is employed to prepare LiTi2(PO4)(3) at 1000 degrees C in air. High energy ball milling followed by carbon coating by the glucose-method yielded C-coated nano-LiTi2(PO4)(3) (LTP) with a crystallite size of 80(+/- 5) nm. The phase is characterized by X-ray diffraction, Rietveld refinement, thermogravimetry, SEM, HR-TEM and Raman spectra. Lithium cycling properties of LTP show that 1.75 moles of Li (similar to 121 mA h g(-1) at 15 mA g(-1) current) per formula unit can be reversibly cycled between 2 and 3.4 V vs. Li with 83% capacity retention after 70 cycles. Cyclic voltammograms (CV) reveal the two-phase reaction mechanism during Li insertion/extraction. A hybrid electrochemical supercapacitor (HEC) with LTP as negative electrode and activated carbon (AC) as positive electrode in non-aqueous electrolyte is studied by CV at various scan rates and by galvanostatic cycling at various current rates up to 1000 cycles in the range 0-3 V. Results show that the HEC delivers a maximum energy density of 14 W h kg(-1) and a power density of 180 W kg(-1)
引用
收藏
页码:5808 / 5814
页数:7
相关论文
共 32 条
[1]
On the structure of Li3Ti2(PO4)3 [J].
Aatiq, A ;
Ménétrier, M ;
Croguennec, L ;
Suard, E ;
Delmas, C .
JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (10) :2971-2978
[2]
An asymmetric hybrid nonaqueous energy storage cell [J].
Amatucci, GG ;
Badway, F ;
Du Pasquier, A ;
Zheng, T .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (08) :A930-A939
[3]
Hybrid supercapacitor with nano-TiP2O7 as intercalation electrode [J].
Aravindan, V. ;
Reddy, M. V. ;
Madhavi, S. ;
Mhaisalkar, S. G. ;
Rao, G. V. Subba ;
Chowdari, B. V. R. .
JOURNAL OF POWER SOURCES, 2011, 196 (20) :8850-8854
[4]
A hybrid nonaqueous electrochemical supercapacitor using nano-sized iron oxyhydroxide and activated carbon [J].
Cheng, L ;
Li, HQ ;
Xia, YY .
JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2006, 10 (06) :405-410
[5]
Interpretation of Raman spectra of disordered and amorphous carbon [J].
Ferrari, AC ;
Robertson, J .
PHYSICAL REVIEW B, 2000, 61 (20) :14095-14107
[7]
A novel asymmetric hybrid supercapacitor based on Li2FeSiO4 and activated carbon electrodes [J].
Karthikeyan, K. ;
Aravindan, V. ;
Lee, S. B. ;
Jang, I. C. ;
Lim, H. H. ;
Park, G. J. ;
Yoshio, M. ;
Lee, Y. S. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 504 (01) :224-227
[8]
Electrochemical performance of carbon-coated lithium manganese silicate for asymmetric hybrid supercapacitors [J].
Karthikeyan, K. ;
Aravindan, V. ;
Lee, S. B. ;
Jang, I. C. ;
Lim, H. H. ;
Park, G. J. ;
Yoshio, M. ;
Lee, Y. S. .
JOURNAL OF POWER SOURCES, 2010, 195 (11) :3761-3764
[9]
Kosova NV, 2005, CHEM SUSTAIN DEV, V13, P253
[10]
A hybrid electrochemical supercapacitor based on a 5 VLi-ion battery cathode and active carbon [J].
Li, HQ ;
Cheng, L ;
Xia, YY .
ELECTROCHEMICAL AND SOLID STATE LETTERS, 2005, 8 (09) :A433-A436