Starch Additives for Lithium-Sulfur Battery Cathodes
- 详细技术说明
- A method was developed to significantly enhancethe cyclability and columbic efficiency of lithium-sulfur (Li/S) batteries by incorporatingstarch additives into the cathode material.
- *Abstract
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Li/S represents one of the most promising candidates for next generationlithium batteries due to its high capacity, which is about five times that of current commercial batteries. Despite their superiorcapacity, Li/S batteries suffer from poor cyclability, which is mainlyattributed to the dissolution of intermediate lithium polysulfide products. Thenovel starch additives for Li/S battery cathodes doped with graphene oxide (GO)give rise to significant improvement in cyclability by immobilizing the cathodepolysulfides. Considering the low cost and abundance of starch, thestarch-doped Li/S batteries show great promise for large scale renewable energystorage and other Li-ion battery applications.
Charge/discharge profiles for theGO-doped cathodes under rates of 200 mA g-1 and 800 mA g-1indicate excellent cycling performance.
Potential Applications
Lithium batteries for grid storage, automobiles, consumer electronics, etc.
Advantages
- High cyclability
- Low cost, readily accessible raw material
- Simple synthesis process
- *Licensing
- Carolyn Theodorecat42@cornell.edu607-254-4514
- 其他
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- US patent application 14/783,920
- Zhou, et. al., Amylopectin Wrapped Graphene Oxide/Sulfur for Improved Cyclability of Lithium–Sulfur Battery, ACS Nano (2013)
- 国家/地区
- 美国
