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Equivalent Circuit Modelling of Li-S Batteries
ECS Transactions, 2021The presented article describes a Multi-Scale Multi-Domain model of a Li-S battery using an equivalent circuit model consisting of R-C pairs. The parameters of the equivalent circuit model were obtained by fitting experimentally measured results from electrochemical impedance spectroscopy at various states of charge.
Martin Mačák +3 more
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Electrospinning of Nanofibers for Li–S Battery
2020Li-ion batteries have been widely used in portable electronic devices owing to their excellent assets such as high energy/power density and long operating life. There is an urgent demand to develop high-performance electrode materials with the high capability to store and distribute energy more effectively to additional boost the performance of LIBs ...
Shengjie Peng, P. Robert Ilango
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Li-S Batteries at a Crossroads
ECS Meeting Abstracts, 2016This talk will provide an overview of Li-S batteries, including conventional liquid cells and the important advances that have been made in understanding the chemistry and improving upon it, and will address new opportunities in solid state sulfur cells.
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Outline of Li–S Battery Project
2021In this project, Li–S batteries have been investigated by a team comprising 12 principal investigators. In particular, we focused on developing Li–S batteries with sparingly solvating electrolytes for cathode active materials. Prior to the start of our project, the dissolution of the discharge products of sulfur (lithium polysulfides: Li2Sx, x = 8 ~ 2)
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Is overprotection of the sulfur cathode good for Li–S batteries?
Chemical Communications, 2015Moderate dissolution of polysulfides in the electrolyte is indispensable for the high-efficiency and stable discharge/charge cycling of Li–S batteries.
Tian, Gao +7 more
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Metalization of Li₂S particle surfaces in Li-S batteries.
Nanoscale, 2015The Li-S battery is the most promising candidate for future electric vehicles. The study of stabilities and conductivities of Li2S nanoparticles, which are used as pre-lithiated cathode materials, is crucial for the development of Li-S batteries. Here, we investigate the atomic and electronic structures as well as stabilities of Li2S surfaces and ...
Yan-Xin, Chen, Payam, Kaghazchi
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Li–S batteries: simple approaches for superior performance
Energy & Environmental Science, 2013Although promising improvements have been made in the field of Li–S rechargeable batteries, they are still far from reaching the market place due to several drawbacks. To combat the solubility of polysulphides, confinement approaches aiming to trap sulphur within the cathode side have been pursued, but success has been limited.
Demir-Cakan, R. +5 more
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Li‐S Battery Analyzed by UV/Vis in Operando Mode
ChemSusChem, 2013Battery watch: UV/Vis spectrophotometry is demonstrated as a powerful analytical method for the in situ study of polysulfides. Through the interactions that occur between different chain-length polysulfide molecules and the UV/Vis radiation, quantitative and qualitative determination of the polysulfides formed during Li-S battery operation can be ...
Patel, M.U.M. +5 more
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Electrocatalysis of sulfur and polysulfides in Li–S batteries
Journal of Materials Chemistry A, 2020Electrocatalysis of polysulfides turns soluble species to surface absorbed ones, and promotes interfacial electron transfer processes. Recent advances in this field are reviewed, together with future strategies proposed for improving Li–S batteries.
Chao Deng +4 more
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