Results 211 to 220 of about 6,770 (239)

Formation of lithium polysulfides in aprotic media

Journal of Inorganic and Nuclear Chemistry, 1977
Abstract The formation of Li 2 S n in certain aprotic media can be accomplished either by electrochemical reduction of S 8 or by direct in situ reaction of S 8 with Li or Li 2 S. Polysulfide solubilities and spectra vary widely in different solvents as a result of solvent-solute interactions. A requirement for high polysulfide concentration is
R.D. Rauh, F.S. Shuker, J.M. Marston, S.B. Brummer   +3 more
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A Polysulfide‐Immobilizing Polymer Retards the Shuttling of Polysulfide Intermediates in Lithium–Sulfur Batteries

Advanced Materials, 2018
AbstractLithium–sulfur batteries are regarded as one of the most promising candidates for next‐generation rechargeable batteries. However, the practical application of lithium–sulfur (Li–S) batteries is seriously impeded by the notorious shuttling of soluble polysulfide intermediates, inducing a low utilization of active materials, severe self ...
Shuibin Tu, Xiang Chen, Xinxin Zhao, Mingren Cheng, Peixun Xiong, Yongwu He, Qiang Zhang, Yunhua Xu   +7 more
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Polysulfide Tandem Conversion for Lithium–Sulfur Batteries

Small
AbstractThe electrocatalytic conversion of 16‐electron multistep polysulfides is crucial for lithium–sulfur batteries, while it is hard to achieve compatibility between intricate sulfur reduction processes and appropriate catalysts. Herein, a tandem conversion strategy is reported to boost multi‐step intermediate reactions of polysulfides ...
Zhilong Wang, Jianxiong Gao, Shimeng Zhang, Yu Wu, Yanlan Ren, Yongqi Lu, Xinyu Zhao, Bowen Jin, Mingfei Shao   +8 more
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Anion‐Involved Solvation Structure of Lithium Polysulfides in Lithium–Sulfur Batteries

Angewandte Chemie
AbstractLithium polysulfides (LiPSs) are pivotal intermediates involved in all the cathodic reactions in lithium–sulfur (Li−S) batteries. Elucidating the solvation structure of LiPSs is the first step for rational design of electrolyte and improving Li−S battery performances. Herein, we investigate the solvation structure of LiPSs and find that Li salt
Yun‐Wei Song, Liang Shen, Nan Yao, Shuai Feng, Qian Cheng, Jin Ma, Xiang Chen, Bo‐Quan Li, Qiang Zhang   +8 more
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Ferroelectric‐Enhanced Polysulfide Trapping for Lithium–Sulfur Battery Improvement

Advanced Materials, 2016
A brand new polysulfide entrapping strategy based on the ferroelectric effect has been demonstrated for the first time. By simply adding the nano-ferroelectrics (BaTiO3 nanoparticles) into the cathode, the heteropolar polysulfides can be anchored within the cathode due to the internal electric field originated from the spontaneous polarization BaTiO3 ...
Keyu, Xie, You, You, Kai, Yuan, Wei, Lu, Kun, Zhang, Fei, Xu, Mao, Ye, Shanming, Ke, Chao, Shen, Xierong, Zeng, Xiaoli, Fan, Bingqing, Wei   +11 more
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Molecular structure and stability of dissolved lithium polysulfide species

Phys. Chem. Chem. Phys., 2014
We present a molecular level study of the dissolution mechanism and subsequent chemical stability of lithium polysulfide species using a combined experimental and theoretical approach.
M, Vijayakumar, Niranjan, Govind, Eric, Walter, Sarah D, Burton, Anil, Shukla, Arun, Devaraj, Jie, Xiao, Jun, Liu, Chongmin, Wang, Ayman, Karim, S, Thevuthasan   +10 more
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Two-Stage Solvation of Lithium Polysulfides in Working Lithium–Sulfur Batteries

Journal of the American Chemical Society
Lithium-sulfur (Li-S) batteries are promising in achieving high energy density but inferior in cycling lifespan since Li polysulfides (LiPSs) corrode Li metal anode. Weakening the electrolyte solvating power (ESP) for LiPSs effectively mitigates anodic corrosion but inevitably retards cathodic reaction kinetics.
Xi-Yao Li, Bo-Quan Li, Shuai Feng, Zheng Li, Liang Shen, Shu-Yu Sun, Zi-Xian Chen, Tian Jin, Xiang Chen, Meng Zhao, Xue-Qiang Zhang, Jia-Qi Huang, Qiang Zhang   +12 more
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In Situ Polysulfide Detection in Lithium Sulfur Cells

The Journal of Physical Chemistry Letters, 2018
Lithium sulfur batteries promise significant improvements in specific energy compared to Li-ion, but are limited by capacity fade upon cycling. Efforts to improve durability have focused on suppressing the solubility of intermediate polysulfides in the electrolyte.
John-Paul Jones, Simon C. Jones, Frederick C. Krause, Jasmina Pasalic, Ratnakumar Bugga   +4 more
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Recycling inactive lithium in lithium–sulfur batteries using organic polysulfide redox

Journal of Materials Chemistry A, 2023
Organic polysulfide redox is proposed to recycle inactive Li, significantly improving the lifespan of Li–S batteries under practical conditions.
Li-Yang Yao, Li-Peng Hou, Yun-Wei Song, Meng Zhao, Jin Xie, Bo-Quan Li, Qiang Zhang, Jia-Qi Huang, Xue-Qiang Zhang   +8 more
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Controlling Polysulfide Shuttling in Lithium-Sulfur Batteries

ECS Meeting Abstracts, 2015
Most electric cars run on rechargeable lithium-ion batteries, a pricey technology that accounts for more than half of the vehicle's total cost [1]. The development of renewable, low cost, high performance energy technologies is a key scientific challenge.
Manan Pathak, Bharatkumar Suthar, Venkat Subramanian   +2 more
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