@article{30096, author = {Guo Ai and Yiling Dai and Wenfeng Mao and Hui Zhao and Yanbao Fu and Xiangyun Song and Yunfei En and Vincent S Battaglia and Venkat Srinivasan and Gao Liu}, title = {Biomimetic Ant-Nest Electrode Structures for High Sulfur Ratio Lithium{\textendash}Sulfur Batteries}, abstract = {

The lithium{\textendash}sulfur (Li{\textendash}S) rechargeable battery has the benefit of high gravimetric energy density and low cost. Significant research currently focuses on increasing the sulfur loading and sulfur/inactive-materials ratio, to improve life and capacity. Inspired by nature{\textquoteright}s ant-nest structure, this research results in a novel Li{\textendash}S electrode that is designed to meet both goals. With only three simple manufacturing-friendly steps, which include slurry ball-milling, doctor-blade-based laminate casting, and the use of the sacrificial method with water to dissolve away table salt, the ant-nest design has been successfully recreated in an Li{\textendash}S electrode. The efficient capabilities of the ant-nest structure are adopted to facilitate fast ion transportation, sustain polysulfide dissolution, and assist efficient precipitation. High cycling stability in the Li{\textendash}S batteries, for practical applications, has been achieved with up to 3 mg{\textperiodcentered}cm{\textendash}2 sulfur loading. Li{\textendash}S electrodes with up to a 85\% sulfur ratio have also been achieved for the efficient design of this novel ant-nest structure.

}, year = {2016}, booktitle = {Nano Letters}, journal = {Nano Letters}, series = {Nano Letters}, volume = {16}, pages = {5365 - 5372}, month = {02/2017}, issn = {1530-6984}, doi = {10.1021/acs.nanolett.6b01434}, language = {eng}, }