scholarly journals Revealing the working mechanism of a multi-functional block copolymer binder for lithium-sulfur batteries

2021 ◽  
Vol 59 ◽  
pp. 1-8
Author(s):  
Xin He ◽  
Zhimeng Liu ◽  
Guoping Gao ◽  
Xiaotao Liu ◽  
Michal Swietoslawski ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Working Mechanism ◽  
Functional Block ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

scholarly journals Functionally Modified Polyolefin-Based Separators for Lithium-Sulfur Batteries: Progress and Prospects

2020 ◽  
Vol 8 ◽  
Author(s):  
Jiaojiao Li ◽  
Zhen Xiao ◽  
Anqi Chen ◽  
Wenkui Zhang ◽  
Dongmin Zhu ◽  
...  
Keyword(s):  
Physical Adsorption ◽  
Rate Capability ◽  
Future Perspective ◽  
Portable Devices ◽  
Working Mechanism ◽  
Practical Utilization ◽  
Hybrid Mechanism ◽  
Lithium Sulfur Batteries ◽  
Intractable Problems ◽  
Lithium Sulfur

The ever-growing demand for portable devices and electric vehicles are drawing widespread attention to advanced energy storage systems. Over the past few decades, lithium-sulfur batteries (LSBs) have vast potential to act as the next-generation of rechargeable power source due to their high theoretical specific energy, cost-effectiveness, and environmental benignity. However, insufficient sulfur utilization, inferior cyclability, and rate capability originating from the intrinsic insulating features of the sulfur and notorious polysulfide shuttle are major obstacles to fulfilling the industrialization of LSBs. In this respect, the introduction of a functional barrier layer coating on a separator has been verified as an effective strategy to overcome the aforementioned intractable problems. In this review, we focus on summarizing the current progress of the modified polyolefin-based separators (known as functional separators), including functional separator facing cathodes and functional separator facing anodes. According to the working mechanism, functional separator facing cathodes are divided into physical adsorption separators, chemical adsorption separators, catalytic conversion separators, and multifunctional separators. Meanwhile, functional separator facing anodes are classified into physical barrier separators, induced lithium growth separators, regulated lithium nucleation separators, and hybrid mechanism separators. Finally, the future perspective coupled with the practical utilization of functional separators in LSBs is proposed.

New insight into the working mechanism of lithium–sulfur batteries: in situ and operando X-ray diffraction characterization

2013 ◽  
Vol 49 (72) ◽  
pp. 7899 ◽  
Author(s):  
Sylwia Waluś ◽  
Céline Barchasz ◽  
Jean-François Colin ◽  
Jean-Frédéric Martin ◽  
Erik Elkaïm ◽  
...  
Keyword(s):  
X Ray Diffraction ◽  
Working Mechanism ◽  
X Ray ◽  
Lithium Sulfur Batteries ◽  
Insight Into ◽  
Lithium Sulfur

scholarly journals Lithium-Sulfur Batteries with a Block Copolymer Electrolyte Analyzed by X-ray Microtomography

2020 ◽  
Vol 167 (6) ◽  
pp. 060506 ◽  
Author(s):  
Didier Devaux ◽  
Irune Villaluenga ◽  
Xi Jiang ◽  
Yu Hao Chang ◽  
Dilworth Y. Parkinson ◽  
...  
Keyword(s):  
Block Copolymer ◽  
X Ray ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Copolymer Electrolyte

Cellulose Separators with Integrated Carbon Nanotube Interlayers for Lithium-Sulfur Batteries: An Investigation into the Complex Interplay Between Cell Components

2019 ◽  
Author(s):  
Yu-Chuan Chien ◽  
Ruijun Pan ◽  
Ming-Tao Lee ◽  
Leif Nyholm ◽  
Daniel Brandell ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Solid Electrolyte Interphase ◽  
Holistic Approach ◽  
Cycle Life ◽  
Complex Interplay ◽  
Positive Electrodes ◽  
Lithium Sulfur Batteries ◽  
Cell Components ◽  
Redox Shuttle ◽  
Lithium Sulfur

This work aims to address two major roadblocks in the development of lithium-sulfur (Li-S) batteries: the inefficient deposition of Li on the metallic Li electrode and the parasitic "polysulfide redox shuttle". These roadblocks are here approached, respectively, by the combination of a cellulose separator with a cathode-facing conductive porous carbon interlayer, based on their previously reported individual benefits. The cellulose separator increases cycle life by 33%, and the interlayer by a further 25%, in test cells with positive electrodes with practically relevant specifications and a relatively low electrolyte/sulfur (E/S) ratio. Despite the prolonged cycle life, the combination of the interlayer and cellulose separator increases the polysulfide shuttle current, leading to reduced Coulombic efficiency. Based on XPS analyses, the latter is ascribed to a change in the composition of the solid electrolyte interphase (SEI) on Li. Meanwhile, electrolyte decomposition is found to be slower in cells with cellulose-based separators, which explains their longer cycle life. These counterintuitive observations demonstrate the complicated interactions between the cell components in the Li-S system and how strategies aiming to mitigate one unwanted process may exacerbate another. This study demonstrates the value of a holistic approach to the development of Li-S chemistry.<br>

Separator modified by Ketjen black for enhanced electrochemical performance of lithium–sulfur batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (17) ◽  
pp. 13680-13685 ◽  
Author(s):  
Di Zhao ◽  
Xinye Qian ◽  
Lina Jin ◽  
Xiaolong Yang ◽  
Shanwen Wang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Side ◽  
Electrochemical Performances ◽  
Lithium Sulfur Batteries ◽  
Enhanced Electrochemical Performance ◽  
Lithium Sulfur

A routine separator modified by a Ketjen black (KB) layer on the cathode side has been investigated to improve the electrochemical performances of Li–S batteries.

scholarly journals A review of biomass materials for advanced lithium–sulfur batteries

2019 ◽  
Vol 10 (32) ◽  
pp. 7484-7495 ◽  
Author(s):  
Huadong Yuan ◽  
Tiefeng Liu ◽  
Yujing Liu ◽  
Jianwei Nai ◽  
Yao Wang ◽  
...  
Keyword(s):  
Recent Progress ◽  
Low Cost ◽  
High Abundance ◽  
Chemical Adsorption ◽  
Environmental Friendliness ◽  
Lithium Sulfur Batteries ◽  
Biomass Materials ◽  
Physical And Chemical ◽  
Lithium Sulfur

This review summarizes recent progress of biomass-derived materials in Li–S batteries. These materials are promising due to their advantages including strong physical and chemical adsorption, high abundance, low cost, and environmental friendliness.

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