Year: 2024
Type: article
Abstract: ABSTRACT Unstable anode/electrolyte interfaces have significantly hindered the development of lithium (Li) metal batteries under high rates and large capacities. In this study, a versatile reactive layer based on sulfur-selenium crosslinked polyacrylonitrile brushes has been developed by a combined strategy of polymer topology design and chemical crosslinking. The sulfur-selenium crosslinked polyacrylonitrile side-chains can react with Li to generate passivated Li2S-Li2Se-containing solid electrolyte interphase while 3D lithiophilic porous nanonetworks enable Li penetration, contributing to achieving rapid and uniform Li ion flux and a dendrite-free anode. With these merits, ultralong-term stable cycling (over 1 year and 4 months) at a high current density of 10 mA cm−2 has been achieved for the protected Li anodes. Moreover, even when tested in high-loading Li|NCM622 cell (21.6 mg cm−2) and Li-S cell with a low negative to positive electrode capacity ratio (1.4), stable cycling performances can also be achieved.
Source: National Science Review
DOI: 10.1093/nsr/nwae421
Authors: Jinlun Wu, Yuheng Lu, Xianlan Ke, Linying Zheng, Rongfeng Liao, Dingcai Wu
Institution: Sun Yat-sen University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,100
OpenAlex ID: W4405233298