Carrageenan as an Ecological Alternative of Polyvinylidene Difluoride Binder for Li-S Batteries

被引:19
作者
Kazda, Tomas [1 ]
Capkova, Dominika [2 ]
Jasso, Kamil [1 ]
Strakova, Andrea Fedorkova [2 ]
Shembel, Elena [3 ]
Markevich, Alex [3 ]
Sedlarikova, Marie [1 ]
机构
[1] Brno Univ Technol, Fac Elect Engn & Commun, Dept Elect & Elect Technol, Tech 10, Brno 61600, Czech Republic
[2] Pavol Jozef Safarik Univ Kosice, Fac Sci, Dept Phys Chem, Moyzesova 11, Kosice 04154, Slovakia
[3] Ukrainian State Univ Chem Technol, UA-49000 Dnipro, Ukraine
关键词
lithium; sulfur; binder; battery; cathode; Li-S battery; carrageenan; pouch cell; LITHIUM-SULFUR BATTERIES; PERFORMANCE; ELECTROLYTES; CAPACITY; CATHODES;
D O I
10.3390/ma14195578
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Lithium-sulfur batteries are one of the most promising battery systems nowadays. However, this system is still not suitable for practical application because of the number of shortcomings that limit its cycle life. One of the main problems related to this system is the volumetric change during cycling. This deficiency can be compensated by using the appropriate binder. In this article, we present the influence of a water-soluble binder carrageenan on the electrochemical properties of the Li-S battery. The electrode with a carrageenan binder provides good stability during cycling and at high C-rates. Electrochemical testing was also carried out with a small prototype pouch cell with a capacity of 16 mAh. This prototype pouch cell with the water-based carrageenan binder showed lower self-discharge and low capacity drop. Capacity decreased by 7% after 70 cycles.
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页数:11
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