Role of inner solvation sheath within salt–solvent complexes in tailoring electrode/electrolyte interphases for lithium metal batteries
Xiaodi Ren,Peiyuan Gao,Lianfeng Zou,Shuhong Jiao,Xia Cao,Xianhui Zhang,Hao Jia,Mark H. Engelhard,Bethany E. Matthews,Haiping Wu,Hongkyung Lee,Chaojiang Niu,Chongmin Wang,Bruce W. Arey,Jie Xiao,Jun Liu,Ji-Guang Zhang,Wu Xu +17 more
TLDR
In this article, a series of localized high-concentration electrolytes (LHCEs) with model electrolyte solvents (carbonate, sulfone, phosphate, and ether) were systematically studied to investigate the correlation between the reactive characteristics of the inner solvation sheath on electrode surfaces due to their unique solvation structures.Abstract:
Functional electrolyte is the key to stabilize the highly reductive lithium (Li) metal anode and the high-voltage cathode for long-life, high-energy-density rechargeable Li metal batteries (LMBs). However, fundamental mechanisms on the interactions between reactive electrodes and electrolytes are still not well understood. Recently localized high-concentration electrolytes (LHCEs) are emerging as a promising electrolyte design strategy for LMBs. Here, we use LHCEs as an ideal platform to investigate the fundamental correlation between the reactive characteristics of the inner solvation sheath on electrode surfaces due to their unique solvation structures. The effects of a series of LHCEs with model electrolyte solvents (carbonate, sulfone, phosphate, and ether) on the stability of high-voltage LMBs are systematically studied. The stabilities of electrodes in different LHCEs indicate the intrinsic synergistic effects between the salt and the solvent when they coexist on electrode surfaces. Experimental and theoretical analyses reveal an intriguing general rule that the strong interactions between the salt and the solvent in the inner solvation sheath promote their intermolecular proton/charge transfer reactions, which dictates the properties of the electrode/electrolyte interphases and thus the battery performances.read more
Citations
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Superconcentrated Electrolytes for a High-Voltage Lithium-Ion Battery
TL;DR: In this article, a superconcentrated LiN(SO2F)2/dimethyl carbonate electrolyte was proposed to solve the problem of metal-ion dissolution at high voltages.
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Review—Localized High-Concentration Electrolytes for Lithium Batteries
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A highly stable lithium metal anode enabled by Ag nanoparticle-embedded nitrogen-doped carbon macroporous fibers.
TL;DR: Li et al. as mentioned in this paper developed a 3D hybrid host consisting of Ag nanoparticle-embedded nitrogen-doped carbon macroporous fibers (denoted as Ag@CMFs) with selective nucleation and targeted deposition of Li.
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Emerging Era of Electrolyte Solvation Structure and Interfacial Model in Batteries
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Capturing the swelling of solid-electrolyte interphase in lithium metal batteries
Zewen Zhang,Yuzhang Li,Rong Xu,Wei Zhu,Yanbin Li,Solomon T. Oyakhire,Yecun Wu,Jinwei Xu,Hansen Wang,Zhiao Yu,David T. Boyle,William C. Hahn,Yusheng Ye,Hao Chen,Jiayu Wan,Zhenan Bao,Wah Chiu,Yi Cui +17 more
TL;DR: A thin film vitrification method is adopted to preserve the sensitive yet critical interfaces in batteries at native liquid electrolyte environments to enable cryo–electron microscopy and spectroscopy and to report substantial swelling of the SEI on lithium metal anode in various electrolytes.
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