全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电化学  2012 

锂-硫二次电池界面反应的特殊性与对策分析

, PP. 224-228

Keywords: 锂-硫二次电池,界面反应,电化学微环境

Full-Text   Cite this paper   Add to My Lib

Abstract:

锂-硫电池是在现有锂离子电池基础上最可能实现储能密度大幅提升的实用二次电池体系.然而,这一电池体系的电化学利用率与循环稳定性仍然难以满足应用要求.造成锂-硫电池性能不稳定的原因在于硫正极和锂负极的材料结构和反应环境始终处于变化之中,如在充放电过程中,硫-碳反应界面的电化学阻塞、中间产物的溶解流失、正负极之间的穿梭效应等副反应导致正极与负极均难形成稳定的电化学反应界面。针对这些特殊问题,本文简要分析了影响能量利用率和循环稳定性的化学与电化学机制,并提出了构建稳定锂负极与高效硫正极的若干可行性技术.

References

[1]  Liang C D, Dudney N J, Howe J Y. Hierarchically structured sulfur/carbon nanocomposite material for high-energy lithium battery[J]. Chemistry of Materials, 2009, 21(19): 4724-4730.
[2]  Wang X M, Nishina T, Uchida I. Application of the microelectrode technique to the kinetic study of lithium deposition/dissolution and alloying in organic solutions[J]. Journal of Power Sources, 1997, 68(2): 483-486.
[3]  Kolosnitsyn V S, Karaseva E V, Ivanov A L. Electrochemistry of a lithium electrode in lithium polysulfide solutions[J]. Russian Journal of Electrochemistry, 2008, 44(5): 564-569.
[4]  Rauh R D, Abraham K M, Pearson G F, et al. A lithium/dissolved sulfur battery with an organic electrolyte[J]. Journal of the Electrochemical Society, 1979, 126 (4): 523-527.
[5]  Shim J, Striebel K A, Cairns E J. The lithium/sulfur rechargeable cell, effects of electrode composition and solvent on cell performance[J]. Journal of the Electrochemical Society, 2002, 149 (10): A1321-A1325.
[6]  Cheo S E, Ko K S, Cho J H, et al. Rechargeable lithium sulfur battery, i. structural change of sulfur cathode during discharge and charge[J]. Journal of the Electrochemical Society, 2003, 150(6): A796-A799.
[7]  Mikhaylik Y V, Akridge J R. Polysulfide shuttle study in the Li/S battery system[J]. Journal of the Electrochemical Society, 2004, 151(11): A1969-A1976.
[8]  Lai C, Gao X P, Zhang B, et al. Synthesis and electrochemical performance of sulfur/highly porous carbon composites, Journal of Physical Chemistry C, 2009, 113 (11): 4712-4716.
[9]  Ji X L, Lee K T, Nazar L F. A highly ordered nanostructured carbon-sulphur cathode for lithium-sulphur batteries[J]. Nature Materials, 2009, 8(6): 500-506.
[10]  Lee Y M, Choi N S, Park J H, et al. Electrochemical performance of lithium/sulfur batteries with protected Li anodes, Journal of Power Sources, 2003, 119-121: 964-972.
[11]  Mikhaylik Y V. Electrolytes for lithium sulfur cells: US, 0147891[P]. 2005.
[12]  Han D H, Kim B S, Choi S J, et al. Time-resolved in situ spectroelectrochemical study on reduction of sulfur in N,N?-Dimethylformamide[J]. Journal of the Electrochemical Society, 2004, 151(9): E283-E290.
[13]  Ji X L, Nazar L F. Advances in Li-S batteries[J]. Journal of Materials Chemistry, 2010, 20(44): 9821-9826.
[14]  Hayashi A, Ohtomo T, Mizuno F, et al. All-solid-state Li/S batteries with highly conductive glass-ceramic electrolytes[J]. Electrochemistry Communications, 2003, 5(8):701-705.
[15]  Ji X L, Evers S,Black R, et al. Stabilizing lithium-sulphur cathodes using polysulphide reservoirs, Nature communications[J]. 2011, 2(Article No. 325).
[16]  Aurbach D, Pollak E, Elazari R, et al, On the surface chemical aspects of very high energy density, rechargeable Li-sulfur batteries[J]. Journal of the Electrochemical Society, 2009, 156(8): A694-A702.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133