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Electrochemical Energy Reviews ›› 2018, Vol. 1 ›› Issue (3): 388-402.doi: 10.1007/s41918-018-0015-y

所属专题： Batteries

• REVIEW ARTICLE • 上一篇    下一篇

Toward Better Lithium-Sulfur Batteries: Functional Non-aqueous Liquid Electrolytes

Shizhao Xiong1, Michael Regula2, Donghai Wang3, Jiangxuan Song1   

  1. 1 State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China;
    2 Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802, USA;
    3 Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802, USA
  • 收稿日期:2018-04-27 修回日期:2018-07-03 出版日期:2018-09-20 发布日期:2018-11-29
  • 通讯作者: Donghai Wang, Jiangxuan Song E-mail:dwang@psu.edu;songjx@xjtu.edu.cn
  • 基金资助:
    SX and JS would like to thank the National Natural Science Foundation of China (No. 51602250) and Thousand Youth Talents Plan Project of China for their funding support. MR and DW would like to acknowledge the Ofce of Vehicle Technologies of the U.S. Department of Energy under Contract No. DE-EE0007795 for its support of this work.

Toward Better Lithium-Sulfur Batteries: Functional Non-aqueous Liquid Electrolytes

Shizhao Xiong1, Michael Regula2, Donghai Wang3, Jiangxuan Song1   

  1. 1 State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China;
    2 Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802, USA;
    3 Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802, USA
  • Received:2018-04-27 Revised:2018-07-03 Online:2018-09-20 Published:2018-11-29
  • Contact: Donghai Wang, Jiangxuan Song E-mail:dwang@psu.edu;songjx@xjtu.edu.cn
  • Supported by:
    SX and JS would like to thank the National Natural Science Foundation of China (No. 51602250) and Thousand Youth Talents Plan Project of China for their funding support. MR and DW would like to acknowledge the Ofce of Vehicle Technologies of the U.S. Department of Energy under Contract No. DE-EE0007795 for its support of this work.

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摘要： Having been extensively studied in the past fve decades, lithium-sulfur (Li-S) batteries possess a high theoretical energy density (~2600 Wh kg-1), ofering the potential to power advanced twenty-frst-century technologies such as electric vehicles and drones. However, a surprisingly complex engineering challenge remains in the application of these batteries:the identifcation of appropriate electrolytes that are compatible with both sulfur cathodes and lithium metal anodes. Non-aqueous liquid electrolytes, typically consisting of a lithium salt dissolved in an organic solvent, cannot themselves demonstrate efective electrochemical performances. Researchers have found that functional electrolytes ofer unique possibilities to engineer the surface chemistries of sulfur cathodes and lithium anodes to enable long-term cycling. In this article, recent progresses in the development of functional non-aqueous liquid electrolytes in Li-S batteries are reviewed, including novel co-solvent solutions, lithium salts, additives, redox mediators, and ionic liquids. Characterization techniques and interpretations are cited to elucidate the efects of these components on the kinetics of sulfur redox reactions, lithium passivation, and cell performance. The information presented and the studies highlighted in this review will provide guidance for future optimized electrolyte designs.

Full-text：https://link.springer.com/article/10.1007/s41918-018-0015-y

关键词: Lithium-sulfur batteries, Additive, Electrolyte, Lithium metal anode, Redox mediator

Abstract: Having been extensively studied in the past fve decades, lithium-sulfur (Li-S) batteries possess a high theoretical energy density (~2600 Wh kg-1), ofering the potential to power advanced twenty-frst-century technologies such as electric vehicles and drones. However, a surprisingly complex engineering challenge remains in the application of these batteries:the identifcation of appropriate electrolytes that are compatible with both sulfur cathodes and lithium metal anodes. Non-aqueous liquid electrolytes, typically consisting of a lithium salt dissolved in an organic solvent, cannot themselves demonstrate efective electrochemical performances. Researchers have found that functional electrolytes ofer unique possibilities to engineer the surface chemistries of sulfur cathodes and lithium anodes to enable long-term cycling. In this article, recent progresses in the development of functional non-aqueous liquid electrolytes in Li-S batteries are reviewed, including novel co-solvent solutions, lithium salts, additives, redox mediators, and ionic liquids. Characterization techniques and interpretations are cited to elucidate the efects of these components on the kinetics of sulfur redox reactions, lithium passivation, and cell performance. The information presented and the studies highlighted in this review will provide guidance for future optimized electrolyte designs.

Full-text：https://link.springer.com/article/10.1007/s41918-018-0015-y

Key words: Lithium-sulfur batteries, Additive, Electrolyte, Lithium metal anode, Redox mediator

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