title: Decoration of Silica Nanoparticles on Polypropylene Separator for Lithium-Sulfur Batteries.
abstract: A SiO2nanoparticle decorated polypropylene (PP) separator (PP-SiO2) has been prepared by simply immersing the PP separator in the hydrolysis solution of tetraethyl orthosilicate (TEOS) with the assistance of Tween-80. After decoration, the thermal stability and the electrolyte wettability of the PP-SiO2separator are obviously improved. When the PP-SiO2separator is used for lithium-sulfur (Li-S) batteries, the cyclic stability and rate capability of the batteries are greatly enhanced. The capacity retention ratio of the Li-S battery configured with the PP-SiO2separator is 64% after 200 cycles at 0.2 C, which is much higher than that configured with the PP separator (45%). Moreover, the rate capacity of the Li-S batteries using the PP-SiO2separator reaches 956.3, 691.5, 621, and 567.6 mAh g-1at the current density of 0.2, 0.5, 1, and 2 C, respectively. The reason could be ascribed to that the polar silica coating not only alleviates the shuttle effect but also facilitates Li-ion migration.
authors.affiliation: Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, Xinjiang University , Urumqi, 830046 Xinjiang, People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.affiliation: Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, Xinjiang University , Urumqi, 830046 Xinjiang, People's Republic of China.
authors.forename: Yudai
authors.identifier: http://orcid.org/0000-0002-5833-7242
authors.initials: Y
authors.lastname: Huang
authors.affiliation: Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, Xinjiang University , Urumqi, 830046 Xinjiang, People's Republic of China.
authors.forename: Su
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, Xinjiang University , Urumqi, 830046 Xinjiang, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: Jia
authors.affiliation: Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, Xinjiang University , Urumqi, 830046 Xinjiang, People's Republic of China.
authors.forename: Xingchao
authors.initials: X
authors.lastname: Wang
authors.affiliation: Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, Xinjiang University , Urumqi, 830046 Xinjiang, People's Republic of China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Guo
authors.affiliation: Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, Xinjiang University , Urumqi, 830046 Xinjiang, People's Republic of China.
authors.forename: Dianzeng
authors.initials: D
authors.lastname: Jia
authors.affiliation: Tianjin EV Energies Co., Ltd. , Tianjin, 300380 Tianjin, People's Republic of China.
authors.forename: Lishi
authors.initials: L
authors.lastname: Wang
keywords: SiO2 nanoparticles; decoration; electrochemical properties; lithium−sulfur batteries; polypropylene separator