Theoretical anchoring effect of new phosphorus allotropes for lithium–sulfur batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (20) ◽  
pp. 11095-11111 ◽  
Author(s):  
Chunmei Li ◽  
Linxin He ◽  
Jianglei Luo ◽  
Jianfeng Tang ◽  
Nanpu Cheng ◽  
...  
Keyword(s):  
Anchoring Effect ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Phosphorus allotropes α-P, β-P, γ-P, δ-P, ε-P, ζ-P, θ-P and η-P, have been investigated as anchoring materials for Li–S batteries.

Strong lithium-polysulfide anchoring effect of amorphous carbon for lithium–sulfur batteries

2020 ◽  
Author(s):  
Taegon Jeon ◽  
Young Chul Lee ◽  
Jae-Yeol Hwang ◽  
Byung Chun Choi ◽  
Seunghun Lee ◽  
...  
Keyword(s):  
Amorphous Carbon ◽  
Anchoring Effect ◽  
Lithium Polysulfide ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Understanding the Anchoring Effect of Two-Dimensional Layered Materials for Lithium–Sulfur Batteries

Nano Letters ◽  
2015 ◽  
Vol 15 (6) ◽  
pp. 3780-3786 ◽  
Author(s):  
Qianfan Zhang ◽  
Yapeng Wang ◽  
Zhi Wei Seh ◽  
Zhongheng Fu ◽  
Ruifeng Zhang ◽  
...  
Keyword(s):  
Layered Materials ◽  
Two Dimensional ◽  
Anchoring Effect ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Theoretical understanding for anchoring effect of MOFs for lithium-sulfur batteries

2021 ◽  
Vol 1196 ◽  
pp. 113110
Author(s):  
Cheng Li ◽  
Xiaofei Zhang ◽  
Qi Zhang ◽  
Yuhong Xiao ◽  
Yiyi Fu ◽  
...  
Keyword(s):  
Theoretical Understanding ◽  
Anchoring Effect ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

scholarly journals Insight into the Anchoring Effect of Two-Dimensional TiX2 (X = S, Se, Te) Materials for Lithium-Sulfur Batteries: A DFT Study

2021 ◽  
Author(s):  
Qiao Wu ◽  
Yuchao Chen ◽  
Xiaoqian Hao ◽  
Tianjiao Zhu ◽  
Yongan Cao ◽  
...  
Keyword(s):  
Density Functional ◽  
Transition Metal Dichalcogenides ◽  
Discharge Process ◽  
Two Dimensional ◽  
Functional Theory ◽  
Anchoring Effect ◽  
Adsorption Behaviors ◽  
Lithium Sulfur Batteries ◽  
Metal Dichalcogenides ◽  
Lithium Sulfur

Abstract It is desirable to develop suitable anchoring materials to restrain the notorious shuttle phenomenon in lithium-sulfur (Li-S) batteries. Two-dimensional transition metal dichalcogenides (2D TMDs), especially TiS2, with excellent physicochemical properties have attracted much attention. Here, density functional theory (DFT) computations were performed to systematically explore the adsorption behaviors of lithium polysulfides (LiPSs) over TiX2 (X = S, Se, Te) monolayer. It is concluded that TiS2 shows the best anchoring effect owing to the strongest adsorption energy, and the intrinsic structures of LiPSs after adsorption could be preserved by calculating the decomposition energy. Moreover, the low diffusion energy barrier of Li2S on TiS2 surface is expected to accelerate the kinetics during the charge/discharge process. Based on a series of calculations and discussion, we can theoretically demonstrate that TiS2, as an anchoring material, has advantages over TiSe2 and TiTe2 in enhancing Li-S batteries performance.

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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