Results 161 to 170 of about 1,381 (204)

Polysulfide Filter and Dendrite Inhibitor: Highly Graphitized Wood Framework Inhibits Polysulfide Shuttle and Lithium Dendrites in Li–S Batteries

Advanced Functional Materials, 2021
AbstractThe design and manufacture of advanced materials based on biomaterials provide new opportunities to solve many technological challenges. In this work, a highly graphitized wood framework (GWF) with a porous tunnel structure and microvilli is constructed as a multifunctional interlayer to improve the electrochemical performance of lithium–sulfur
Yuanzhen Chen, Kunyang Zou, Xin Dai, Haihua Bai, Shilin Zhang, Tengfei Zhou, Chengxin Li, Yongning Liu, Wei Kong Pang, Zaiping Guo   +9 more
openaire   +2 more sources

Stepwise Electrocatalysis as a Strategy against Polysulfide Shuttling in Li–S Batteries

ACS Nano, 2019
Most issues with Li-S batteries are caused by the slowness of the multielectron sulfur electrochemical reaction resulting in the loss of sulfur as soluble polysulfides to the electrolyte and the redox shuttling of polysulfides between the cathode and anode during battery charge and discharge.
Hualin Ye, Jianguo Sun, Shengliang Zhang, Haibin Lin, Tianran Zhang, Qiaofeng Yao, Jim Yang Lee   +6 more
openaire   +2 more sources

Suppression of Polysulfide Dissolution and Shuttling with Glutamate Electrolyte for Lithium Sulfur Batteries

ACS Nano, 2019
The lithium sulfur battery is regarded as a potential next-generation high-energy battery system. However, polysulfides dissolve and shuttle through the electrolytes, causing rapid capacity decay, serious self-discharge, and poor high-temperature performances.
Liwei Dong, Jipeng Liu, Dongjiang Chen, Yupei Han, Yifang Liang, Mengqiu Yang, Chunhui Yang, Weidong He   +7 more
openaire   +2 more sources

Mitigating Polysulfide Shuttling in Li-S Battery

2019
The energy source shortage has become a severe issue, and solving the problem with renewable and sustainable energy is the primary trend. Among the new generation energy storage, lithium-sulfur (Li-S) battery stands out for its low cost, high theoretical capacity (1,675 mAh g-1), and environmentally friendly properties.
openaire   +2 more sources

Reduced polysulfide shuttle in lithium–sulfur batteries using Nafion-based separators

Journal of Power Sources, 2014
Abstract Nafion-coated polypropylene separator (Celgard 2500) is used as cation-selective membrane for lithium sulfur batteries to suppress polysulfide diffusion enhancing the charge efficiency of the cells especially at low charge/discharge rates. The charge efficiency of the 10th cycle rises from about 70% to nearly 90% at a rate of C/20.
I. Bauer, S. Thieme, J. Brückner, H. Althues, S. Kaskel   +4 more
openaire   +1 more source

Physical Field Effects to Suppress Polysulfide Shuttling in Lithium–Sulfur Battery

Advanced Materials
AbstractLithium–sulfur batteries (LSB) with high theoretical energy density are plagued by the infamous shuttle effect of lithium polysulfide (LPS) and the sluggish sulfur reduction/evolution reaction. Extensive research is conducted on how to suppress shuttle effects, including physical structure confinement engineering, chemical adsorption strategy ...
Junan Feng, Chuan Shi, Xiaoxian Zhao, Ying Zhang, Shuangqiang Chen, Xinbing Cheng, Jianjun Song   +6 more
openaire   +2 more sources

Minimizing Polysulfide Shuttle Effect in Lithium-Ion Sulfur Batteries by Anode Surface Passivation

ACS Applied Materials & Interfaces, 2018
Lithium-ion sulfur batteries use nonlithium materials as the anode for extended cycle life. However, polysulfide shuttle reactions still occur on the nonmetal anodes (such as graphite and Si), and result in undesirable low Coulombic efficiency. In this work, we used Al2O3 layers coated by atomic layer deposition (ALD) technique to suppress the shuttle ...
Jian Liu, Dongping Lu, Jianming Zheng, Pengfei Yan, Biqiong Wang, Xueliang Sun, Yuyan Shao, Chongmin Wang, Jie Xiao, Ji-Guang Zhang, Jun Liu   +10 more
openaire   +2 more sources

Electrocatalytic polysulfide transformation for suppressing the shuttle effect of Li-S batteries

Applied Surface Science, 2020
Abstract We report a method based on 2,4-dihydroxybenzoic acid-formaldehyde (RF-COOH) microsphere hard templates to prepare core-shelled Fe2O3 microspheres, which were then added to graphene oxide to obtain hierarchical reduced graphene oxide, ultimately dropping Fe2O3 (Fe2O3@rGO) by Vitamin C reduction and freeze drying.
Tiancheng Na, Yang Liu, Xiangcun Li, Wenji Zheng, Yan Dai, Zhijun Yan, Wei Kou, Gaohong He   +7 more
openaire   +1 more source

Discretized Analysis of Polysulfide Shuttle Dynamics in Lithium-Sulfur Batteries

Journal of The Electrochemical Society
The polysulfide shuttle effect remains a fundamental challenge in lithium-sulfur batteries, particularly for high-energy-density applications where conventional mitigation strategies prove insufficient. Here, we introduce a state-resolved methodology for quantifying shuttle current by analyzing Coulombic efficiency across discretized charging blocks ...
Saeme Motevalian, Aqsa Nazir, Anil Pathak, Georgina Jahan, Dambar Hamal, Bilal El-Zahab   +5 more
openaire   +1 more source

Developing A “Polysulfide‐Phobic” Strategy to Restrain Shuttle Effect in Lithium–Sulfur Batteries

Angewandte Chemie International Edition, 2019
AbstractInspired by hydrophobic interface, a novel design of “polysulfide‐phobic” interface was proposed and developed to restrain shuttle effect in lithium–sulfur batteries. Two‐dimensional VOPO4 sheets with adequate active sites were employed to immobilize the polysulfides through the formation of a V−S bond.
Yibo He, Yu Qiao, Zhi Chang, Xin Cao, Min Jia, Ping He, Haoshen Zhou   +6 more
openaire   +2 more sources