Preparation of Mesoporous Carbon/Sulfur Composite Loaded with ZnS and Its Property for Lithium-sulfur Batteries

doi:10.3724/SP.J.1077.2013.13017

Abstract

Abstract: With the aim to obtain high performance cathode materials for lithium-sulfur batteries, composite of mesoporous carbon (MC) loaded with ZnS (ZnS/MC) was prepared through ultrasonic dispersion and heat treatment. The as-prepared composite was blended with elemental sulfur by heating, then cathode materials (ZnS/MC/S) was obtained. The ZnS/MC composite was characterized by XRD, SEM, EDS and N₂ adsorption-desorption isotherms. The results showed that ZnS particle was uniformly loaded to the surface of MC through ultrasonic dispersion when content of ZnS was less than 17wt%. ZnS nanoparticles aggregated to form sphalerite ZnS by heat treatment or increasing content of ZnS. Cyclic voltammetry test showed that ZnS accelerated the oxidation process of polysulfides. Charge/ discharge tests indicated that the initial discharge specific capacity was 1354.6 mAh/g, while the coulombic efficiency of the first charge and discharge was 98.7%. The capacity still remained 650 mAh/g after 50 cycles.

Key words: lithium sulfur battery, ZnS, mesoporous carbon, ultrasonic dispersion, cyclic performance

CLC Number:

TM912

CHEN Long, LIU Jing-Dong, ZHANG Shi-Qun. Preparation of Mesoporous Carbon/Sulfur Composite Loaded with ZnS and Its Property for Lithium-sulfur Batteries[J]. Journal of Inorganic Materials, 2013, 28(10): 1127-1131.

References

[1] LIANG Xiao, Wen Zhao-Yin, LIU Yu. Research progress of high performance lithium sulfur battery materials. Chemical Progress, 2011, 23(2/3): 520–526.

[2] JI Xiu-Lei, Nazar Linda F. Advances in Li-S batteries. Journal of Material Chemistry, 2010, 20(44): 9821–9826.

[3] Mikhaylik Yury V, Akridge James R. Polysulfide shuttle study in the Li/S battery system. Journal of The Electrochemical Society, 2004, 151(11): A1969–A1976.

[4] Cheon Sang-Eun, Ko Ki-Seok, Cho Ji-Hoon, et al. Rechargeable lithium sulfur battery I. Structural change of sulfur cathode during discharge and charge. Journal of The Electrochemical Society, 2003, 150(6): A796–A799.

[5] Cheon Sang-Eun, Ko Ki-Seok, Cho Ji-Hoon, et al. Rechargeable lithium sulfur battery II. Rate capability and cycle characteristics. Journal of The Electrochemical Society, 2003, 150(6): A800–A805.

[6] Wang J, Chen J, Konstartirov K, et a1. Sulphur-polypyrrole composite positive electrode materials for rechargeable lithium batteries. J. Electrochimica Acta, 2006, 51(22): 4634–4638．

[7] SUN Ming-Ming, ZHANG Shi-Chao, JING Tao, et al. Nano-wire networks of sulfur-polypyrrole composite cathode materials for rechargeable lithium batteries. Electrochem. Commun., 2008, 10(12): 1819–1822.

[8] DUAN Li, LU Jia-Chun, LIU Wen-Yuan, et al. Fabrication of conductive polymer-coated sulfur composite cathode materials based on layer-by-layer assembly for rechargeable lithium-sulfur batteries. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2012, 414(23): 98–103.

[9] GUO Ju-Chen, XU Yun-Hua, WANG Chun-Sheng. Sulfur- impregnated disordered carbon nanotubes cathode for lithium- sulfur batteries. Nano Letter, 2011, 11(10): 4288–4294.

[10] ZHENG Guang-Yuan, YANG Yuan, Cha Judy J, et al. Hollow carbon nanofiber-encapsulated sulfur cathodes for high specific capacity rechargeable lithium batteries. Nano Letter, 2011, 11(7): 4462–4467.

[11] Jayaprakash N, Shen J, Moganty Surya S, et al. Porous hollow Carbon@Sulfur composites for high-power lithium-sulfur batteries. Angewandte Chemie-International Edition, 2011, 50(26): 5904–5908.

[12] Dimos K, Koutselas I B, Karakassides M A. Synthesis and characterization of ZnS nanosized semiconductor particles within mesoporous solids. Journal of Physical Chemistry B, 2006, 110(45): 22339–22345.

[13] JI Xiu-Lei, Lee Kyu Tae, Nazar Linda F. A highly ordered nanostructured carbon-sulphur cathode for lithium-sulphur batteries. Nature Materials, 2009, 8(6): 500–506.

[14] LIU Hui, YUE Xin, LIU Jing-Dong. Effect of montmorillonite on the performance of mesoporous carbon/sulfur composite electrode. Battery, 2012, 42(4): 186–188.

[15] Yamin H, Penciner J, Gorenshtein A, et al. The electrochemical behavior of polysulfides in tetrahydrofuran. Journal of Power Sources, 1985, 14(2): 129–134.

[16] Yamin H, Gorenshtein A, Penciner J, et al. Lithium sulfur battery oxidation/reduction mechanisms of polysulfides in THF Solutions. Journal of the Electrochemical Society, 1988, 135(5): 1045–1048.