Liu, Kun LinKun LinLiuChao, Chung HsiangChung HsiangChaoLee, Hsin ChiehHsin ChiehLeeTsao, Cheng SiCheng SiTsaoFang, JasonJasonFangNAE-LIH WUCHI-YANG CHAO2019-09-252019-09-252019-04-1503787753https://scholars.lib.ntu.edu.tw/handle/123456789/425099https://www.scopus.com/inward/record.uri?eid=2-s2.0-85061780403&doi=10.1016%2fj.jpowsour.2019.02.048&partnerID=40&md5=783ec29a90ed25d0cfc14606dbdd6824© 2019 Elsevier B.V. A novel non-porous separator that possesses an outstanding lithium transference number (0.92) and effectively suppresses lithium dendrite formation upon lithium deposition is developed. The separator is made of triblock copolymer poly(styrene-block-isoprene-block-sulfonated isoprene) bearing pendant lithium sulfonates and, while taking up only 30 wt% liquid electrolyte (1 M Lithium hexafluorophosphate in ethylene carbonate/diethyl carbonate/ethyl methyl carbonate (v/v/v = 4/3/3)), it allows a high ion conductivity of 10−4 S cm−1. With good mechanical strength and processing feasibility, the new non-porous separator is shown to enable dendrite-free lithium electro-deposition and stripping with flat overpotential profiles upon prolonged galvanostatic cycling of the lithium symmetrical cells in the carbonate-based electrolyte.Block copolymer | Dendrites | Lithium metal batteries | Polyelectrolyte | Separator[SDGs]SDG7journal article10.1016/j.jpowsour.2019.02.0482-s2.0-85061780403WOS:000463305900008https://api.elsevier.com/content/abstract/scopus_id/85061780403