24 Dec '16, 11am

Researchers develop robust biopolymer network binder enabling high sulfur loading in Li-S electrodes

Researchers develop robust biopolymer network binder enabling high sulfur loading in Li-S electrodes

Developing high-loading electrode is an effective way to increase areal capacity and thus energy density of batteries. However, as the amount of areal loading increases, electrode film on current collector becomes thicker. The thick electrode tends to fracture and delaminate from current collector after coating and drying, making the high-loading electrode much difficult to be realized. Moreover, the issues of lithium-sulfur (Li-S) battery, including formation of soluble long-chain polysulfides, which easily diffuse out of the cathode scaffold and cause shuttle reaction, insulator nature of sulfur material, and huge volume change (76%) during charge and discharge, become much more serious in high-loading Li-S battery.

Full article: http://www.greencarcongress.com/2016/12/20161224-liu.html

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