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http://dx.doi.org/10.5695/JKISE.2016.49.2.191

Improved Properties of Li4Ti5O2 (LTO) by Surface Modification with Carbon Nanotube (CNT)  

Park, Soo-Gil (Department of Engineering Chemistry, Chungbuk National University)
Kim, Cheong (Department of Engineering Chemistry, Chungbuk National University)
Habazaki, Hiroki (Faculty of Engineering, Hokkaido university)
Publication Information
Journal of the Korean institute of surface engineering / v.49, no.2, 2016 , pp. 191-195 More about this Journal
Abstract
Among the lithium metal oxides for hybrid-capacity, $Li_4Ti_5O_{12}(LTO)$ is an emerging electrode material as zero-stain material in volume change during the with the charging and discharging processes. However, LTO has a limitation of low ionic and electronic conductivity. To enhance the ionic and electronic properties of $Li_4Ti_5O_{12}(LTO)$, we synthesized the spherical LTO/CNT composite by sol-gel process for hybrid capacitors. CNT interconnection networks between CNT-LTO particles enhanced electronic conductivity and electrochemical charging/discharging properties. All of the LTO samples was observed to show the spinel structure and spherical morphology with the diameter of $5{\sim}10{\mu}m$. Especially, spherical LTO/CNT composite of the CNT-3 wt% showed the enhanced capacity from 110 mAh/g to 140 mAh/g at 10 C.
Keywords
LTO/CNT composite material; Hybrid-capacitor;
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1 N. Lia, J. Liang, D. Wei, Y. Zhu, Y. Qianba, Solvothermal synthesis of micro-/nanoscale Cu/$Li_4Ti_5O_{12}$ composites for high rate Li-ion batteries Original, Electrochim. Acta, 123 (2014) 346-352.   DOI
2 R. B. Khomane, A. S. Prakash, K. Ramesha, M. Sathiya, CTAB-assisted sol-gel synthesis of $Li_4Ti_5O_{12}$ and its performance as anode material for Li-ion batteries, Mater. Resear. Bulletin, 46 (2011) 1139-1142.   DOI
3 E. Shinawi, T. LeichtweiB, k. Pepplera, M. M. Muler, H. J. Kleebe, J. J. Physikalisch, Synthesis and lithium storage properties of porous $Li_{4/3}Ti_{5/3}O_4$-M/$MO_x$ (M=Ni,Co) composites, Electrochim. Acta, 120 (2014) 264-272.   DOI
4 M. Chiao Tsai, T. L. Tsai, C. T. Lin, R. J. Chung, H. S. Sheu, H. T. Chiu, C. Y. Lee, Tailor Made Mie Scattering Color Filters Made by Size-Tunable Titanium Dioxide Particles, J. Phys. Chem. C., 112 (2008) 2697-2702.   DOI
5 Shen, X. Zhang, Y. Zhou, H. Li, Preparation and characterization of nanocrystalline $Li_4Ti_5O_{12}$ by sol-gel method, Mater. Chem. Phys., 78 (2002) 437-441.
6 J. L. Allen, T. R. Jow, J. Wolfenstine, Low temperature performance of nanophase $Li_4Ti_5O_{12}$, J. Powersources, 159 (2006) 1340-1345.
7 Q. Cao, H. P. Zhang, G. J. Wang, Q. Xia, Y. P. Wu, H.Q. Wu, A novel carbon-coated LiCoO2 as cathode material for lithium ion battery, electrochem. Commun., 9 (2007) 1228-1232.   DOI
8 B. Scrosati, Recent advances in lithium ion battery materials, Electrochim. Acta, 45 (2000) 2461-2466.   DOI
9 M. Winter, Ralph F. Brodd, What Are Batteries, Fuel Cells, and Super capacitors, Chem. Rev., 104 (2004) 4245-4269.   DOI
10 Y. Yao, M. T. McDowell, I. Ryu, H. Wu, N. Liu, L. Hu, W. D. Nix, Y. Cui, Interconnected Silicon Hollow Nanospheres for Lithium-Ion Battery Anodes with Long Cycle Life, Nano Lett., 11 (2011) 2949-2954.   DOI
11 T. Ohzuku, A. Ueda and N. Yamamoto, Zero-Strain Insertion Material of $Li[Li_{1/3}Ti_{5/3}]O_4$ for Rechargeable Lithium Cells, J. Electrochem. Soc., 142 (1995) 1431-1435.   DOI
12 Y. Hao, Q. Lai, Z. Xu, X. Liu, X. Ji, Synthesis by TEA sol-gel method and electrochemical properties of $Li_4Ti_5O_{12}$ anode material for lithiumion battery, Solid State Ionics, 176 (2005) 1201-1206.   DOI
13 A. Du Pasquier, A. Laforgue, P. Simon, $Li_4Ti_5O_{12}$/poly(methyl) thiophene asymmetric hybrid electrochemical device, J. Powersources, 125 (2004) 95-102.
14 A. D. Pasquier, I. Plitz, J. Gural, S. Menocal, G. Amatucci, Characteristics and performance of 500 F asymmetric hybrid advanced supercapacitor prototypes, J. Powersources, 113 (2003) 62-71.
15 A. Mahmouda, J. M. A.marilla, K. Lasri, I. Saadoune, Influence of the synthesis method on the electrochemical properties of the $Li_4Ti_5O_{12}$ spinel in Li-half and Li-ion full-cells. A systematic comparison, Electrochim. Acta, 93 (2013) 163-172.   DOI
16 K. Kanamura, T. Chib, K. Dokko, Preparation of $Li_4Ti_5O_{12}$ spherical particles for rechargeable lithium batteries, J. Europ. Ceram. Soc., 26 (2006) 577-581.   DOI
17 M. Lapinski, B. cielska, Wojciech Sadowski, The study of structure and surface morphology of lithium titanate sol-gel derived thin films, J. Phys. Chem. Solids, 74 (2013) 575-578.   DOI