title: Biomimetic Ant-Nest Electrode Structures for High Sulfur Ratio Lithium-Sulfur Batteries.
abstract: The lithium-sulfur (Li-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's ant-nest structure, this research results in a novel Li-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-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-S batteries, for practical applications, has been achieved with up to 3 mg·cm(-2) sulfur loading. Li-S electrodes with up to a 85% sulfur ratio have also been achieved for the efficient design of this novel ant-nest structure.
authors: Energy Storage and Distributed Resources Division, Energy Technologies Area, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.|Science and Technology on Reliability Physics and Application of Electronic Component Laboratory, No. 5 Electronic Research Institute of the Ministry of Industry and Information Technology , Guangzhou 510610, China.
authors: Guo
authors: G
authors: Ai
authors: Energy Storage and Distributed Resources Division, Energy Technologies Area, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors: Yiling
authors: Y
authors: Dai
authors: Energy Storage and Distributed Resources Division, Energy Technologies Area, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.|Guangzhou Automobile Group Co., Ltd. , Guangzhou 511434, China.
authors: Wenfeng
authors: W
authors: Mao
authors: Energy Storage and Distributed Resources Division, Energy Technologies Area, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors: Hui
authors: H
authors: Zhao
authors: Energy Storage and Distributed Resources Division, Energy Technologies Area, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors: Yanbao
authors: Y
authors: Fu
authors: Energy Storage and Distributed Resources Division, Energy Technologies Area, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors: Xiangyun
authors: X
authors: Song
authors: Science and Technology on Reliability Physics and Application of Electronic Component Laboratory, No. 5 Electronic Research Institute of the Ministry of Industry and Information Technology , Guangzhou 510610, China.
authors: Yunfei
authors: Y
authors: En
authors: Energy Storage and Distributed Resources Division, Energy Technologies Area, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors: Vincent S
authors: VS
authors: Battaglia
authors: Energy Storage and Distributed Resources Division, Energy Technologies Area, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors: Venkat
authors: V
authors: Srinivasan
authors: Energy Storage and Distributed Resources Division, Energy Technologies Area, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors: Gao
authors: G
authors: Liu
keywords: Li−S battery; ant-nest structure; biomimetic; high sulfur ratio