title: Facile and Nonradiation Pretreated Membrane as a High Conductive Separator for Li-Ion Batteries.
abstract: Polyolefin membranes are widely used as separators in commercialized Li-ion batteries. They have less polarized surfaces compared with polarized molecules of electrolyte, leading to a poor wetting state for separators. Radiation pretreatments are often adopted to solve such a problem. Unfortunately, they can only activate several nanometers deep from the surface, which limits the performance improvement. Here we report a facile and scalable method to polarize polyolefin membranes via a chemical oxidation route. On the surfaces of pretreated membrane, layers of poly(ethylene oxide) and poly(acrylic acid) can easily be coated, thus resulting in a high Li-ion conductivity of the membrane. Assembled with this decorated separator in button cells, both high-voltage (Li1.2Mn0.54Co0.13Ni0.13O2) and moderate-voltage (LiFePO4) cathode materials show better electrochemical performances than those assembled with pristine polyolefin separators.
authors: Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang, Henan 453007, P.R. China.|Institute of Chemistry, Beijing National Laboratory for Molecular Sciences , Beijing 100190, P.R. China.
authors: Bao
authors: B
authors: Li
authors: Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang, Henan 453007, P.R. China.
authors: Yongjun
authors: Y
authors: Li
authors: Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang, Henan 453007, P.R. China.
authors: Dongmei
authors: D
authors: Dai
authors: Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang, Henan 453007, P.R. China.
authors: Kun
authors: K
authors: Chang
authors: Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang, Henan 453007, P.R. China.
authors: Hongwei
authors: H
authors: Tang
authors: Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang, Henan 453007, P.R. China.
authors: Zhaorong
authors: Z
authors: Chang
authors: Institute of Chemistry, Beijing National Laboratory for Molecular Sciences , Beijing 100190, P.R. China.
authors: Chunru
authors: C
authors: Wang
authors: National Research Council of Canada , Vancouver, BC Canada , V6 T 1W5.
authors: Xiao-Zi
authors: XZ
authors: Yuan
authors: National Research Council of Canada , Vancouver, BC Canada , V6 T 1W5.
authors: Haijiang
authors: H
authors: Wang
keywords: high lithium-ion conductivity; lithium-ion battery; nonradiation; polyolefin membranes; separator