scholarly journals Fabrication of a Covalent Triazine Framework Functional Interlayer for High-Performance Lithium–Sulfur Batteries

Nanomaterials ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 255
Author(s):  
Ben Hu ◽  
Bing Ding ◽  
Chong Xu ◽  
Zengjie Fan ◽  
Derong Luo ◽  
...  
Keyword(s):  
Electronic Transport ◽  
High Performance ◽  
Capacity Fading ◽  
Transport Pathway ◽  
One Dimensional ◽  
Strong Adsorption ◽  
Lithium Sulfur Batteries ◽  
Covalent Triazine Framework ◽  
Adsorption Capability ◽  
Lithium Sulfur

The shuttling effect of polysulfides is one of the major problems of lithium–sulfur (Li–S) batteries, which causes rapid capacity fading during cycling. Modification of the commercial separator with a functional interlayer is an effective strategy to address this issue. Herein, we modified the commercial Celgard separator of Li–S batteries with one-dimensional (1D) covalent triazine framework (CTF) and a carbon nanotube (CNT) composite as a functional interlayer. The intertwined CTF/CNT can provide a fast lithium ionic/electronic transport pathway and strong adsorption capability towards polysulfides. The Li–S batteries with the CTF/CNT/Celgard separator delivered a high initial capacity of 1314 mAh g−1 at 0.1 C and remained at 684 mAh g−1 after 400 cycles−1 at 1 C. Theoretical calculation and static-adsorption experiments indicated that the triazine ring in the CTF skeleton possessed strong adsorption capability towards polysulfides. The work described here demonstrates the potential for CTF-based permselective membranes as separators in Li–S batteries.

Inhibiting polysulfide shuttling using dual-functional nanowire/nanotube modified layers for highly stable lithium–sulfur batteries

2019 ◽  
Vol 43 (37) ◽  
pp. 14708-14713 ◽  
Author(s):  
Yizhou Wang ◽  
Wenhui Liu ◽  
Ruiqing Liu ◽  
Peifeng Pan ◽  
Liyao Suo ◽  
...  
Keyword(s):  
High Conductivity ◽  
Shuttle Effect ◽  
Dual Functional ◽  
Strong Adsorption ◽  
Lithium Sulfur Batteries ◽  
Adsorption Capability ◽  
Lithium Sulfur ◽  
Polysulfide Shuttle

Dual-functional MnO2 nanowire/CNT modified layers were prepared to inhibit the polysulfide shuttle effect utilizing their strong adsorption capability and high conductivity.

Elemental-Sulfur-Mediated Facile Synthesis of a Covalent Triazine Framework for High-Performance Lithium-Sulfur Batteries

2016 ◽  
Vol 55 (9) ◽  
pp. 3106-3111 ◽  
Author(s):  
Siddulu Naidu Talapaneni ◽  
Tae Hoon Hwang ◽  
Sang Hyun Je ◽  
Onur Buyukcakir ◽  
Jang Wook Choi ◽  
...  
Keyword(s):  
High Performance ◽  
Elemental Sulfur ◽  
Facile Synthesis ◽  
Lithium Sulfur Batteries ◽  
Covalent Triazine Framework ◽  
Lithium Sulfur

NiCo2S4/S Composites Used as Cathode Materials in Lithium-Sulfur Batteries with High Performance

NANO ◽  
2021 ◽  
pp. 2150029
Author(s):  
Qian Zhang ◽  
Renxia Zhu ◽  
Chenyu Zhao ◽  
Runze Fan ◽  
Yong Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
High Current Density ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
Volumetric Strain ◽  
Electrochemical Performances ◽  
Discharge Process ◽  
Strong Adsorption ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Application of lithium-sulfur battery has been limited due to polysulfide dissolution, the insulating nature of sulfur and the volumetric strain produced during charge and discharge process. To improve the performance of Li-S batteries, two kinds of bimetallic sulfides of NiCo2S4 with flaky (F-NiCo2S4) and sea urchin-like (S-NiCo2S4) structures were synthesized by using simple hydrothermal method, which were used as sulfur carriers in lithium-sulfur batteries and showed excellent electrochemical properties. At 0.2[Formula: see text]C, both electrodes of F-NiCo2S4/S and S-NiCo2S4/S have high pristine discharge specific capacities of 986[Formula: see text]mAh[Formula: see text]g[Formula: see text] and 959[Formula: see text]mAh[Formula: see text]g[Formula: see text]. At high current density of 4[Formula: see text]C, the F-NiCo2S4/S electrode still has a high pristine discharge specific capacity of 673[Formula: see text]mAh[Formula: see text]g[Formula: see text] and a coulombic efficiency of 97.00%. The specific capacity can remain at 526[Formula: see text]mAh[Formula: see text]g[Formula: see text] with a low average attenuation of 0.17% even after 130 cycles. The excellent electrochemical performances of the cathode material can be ascribed to the synergistic effect of tubular morphology, good electrical conductivity and strong adsorption ability of NiCo2S4 matrix for polysulfide. The job provides a new scheme and material for application of lithium-sulfur batteries with high performance.

MoS2 nanosheets grown on hollow carbon spheres as a strong polysulfide anchor for high performance lithium sulfur batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (46) ◽  
pp. 23636-23644
Author(s):  
Miaoran Li ◽  
Huiyuan Peng ◽  
Yang Pei ◽  
Fang Wang ◽  
Ying Zhu ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
High Performance ◽  
Carbon Spheres ◽  
Mos2 Nanosheets ◽  
Adsorption Ability ◽  
Strong Adsorption ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Lithium Sulfur

The MoS2 nanosheets grown at the surface of hollow carbon spheres with uniform morphology exhibit excellent electrochemical properties and strong adsorption ability on lithium polysulfides.

In situ grown α-Cos/Co heterostructures on nitrogen doped carbon polyhedra enabling the trapping and reaction-intensification of polysulfides towards high performance lithium sulfur batteries

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20579-20588 ◽  
Author(s):  
Shaonan Gu ◽  
Zhaowen Bai ◽  
Soumyadip Majumder ◽  
Baoling Huang ◽  
Guohua Chen
Keyword(s):  
High Performance ◽  
Catalytic Conversion ◽  
Nitrogen Doped ◽  
Strong Adsorption ◽  
Lithium Sulfur Batteries ◽  
Nitrogen Doped Carbon ◽  
Lithium Sulfur

The α-CoS/Co heterostructure provides a strong adsorption and facilitates fast catalytic conversion of polysulfides.

scholarly journals Three-Dimensionally Ordered Macro/Mesoporous Nb2O5/Nb4N5 Heterostructure as Sulfur Host for High-Performance Lithium/Sulfur Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1531
Author(s):  
Haoxian Chen ◽  
Jiayi Wang ◽  
Yan Zhao ◽  
Qindan Zeng ◽  
Guofu Zhou ◽  
...  
Keyword(s):  
Mass Transfer ◽  
High Performance ◽  
Discharge Process ◽  
Transformation Mechanism ◽  
Shuttle Effect ◽  
Strong Adsorption ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur ◽  
Charge Discharge

The severe shuttle effect of soluble polysulfides hinders the development of lithium–sulfur batteries. Herein, we develop a three-dimensionally ordered macro/mesoporous (3DOM) Nb2O5/Nb4N5 heterostructure, which combines the strong adsorption of Nb2O5 and remarkable catalysis effect of Nb4N5 by the promotion “adsorption-transformation” mechanism in sulfur reaction. Furthermore, the high electrocatalytic activity of Nb4N5 facilitates ion/mass transfer during the charge/discharge process. As a result, cells with the S-Nb2O5/Nb4N5 electrode delivered outstanding cycling stability and higher discharge capacity than its counterparts. Our work demonstrates a new routine for the multifunctional sulfur host design, which offers great potential for commercial high-performance lithium–sulfur batteries.

Elemental-Sulfur-Mediated Facile Synthesis of a Covalent Triazine Framework for High-Performance Lithium-Sulfur Batteries

2016 ◽  
Vol 128 (9) ◽  
pp. 3158-3163 ◽  
Author(s):  
Siddulu Naidu Talapaneni ◽  
Tae Hoon Hwang ◽  
Sang Hyun Je ◽  
Onur Buyukcakir ◽  
Jang Wook Choi ◽  
...  
Keyword(s):  
High Performance ◽  
Elemental Sulfur ◽  
Facile Synthesis ◽  
Lithium Sulfur Batteries ◽  
Covalent Triazine Framework ◽  
Lithium Sulfur

Sulfur embedded in one-dimensional French fries-like hierarchical porous carbon derived from a metal–organic framework for high performance lithium–sulfur batteries

2015 ◽  
Vol 3 (29) ◽  
pp. 15314-15323 ◽  
Author(s):  
Xiaofei Yang ◽  
Na Yan ◽  
Wei Zhou ◽  
Hongzhang Zhang ◽  
Xianfeng Li ◽  
...  
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Metal Organic Framework ◽  
French Fries ◽  
Hierarchical Porous Carbon ◽  
One Dimensional ◽  
Hierarchical Porous ◽  
Lithium Sulfur Batteries ◽  
Metal Organic ◽  
Lithium Sulfur

A novel one-dimensional French fries-like hierarchical porous carbon with unique pore distribution was well designed for lithium–sulfur batteries.

Sulfur vacancies in Co9S8-x/N-doped graphene enhancing electrochemical kinetics to high-performance lithium sulfur batteries

2021 ◽  
Author(s):  
Haojie Li ◽  
Yihua Song ◽  
Kai Xi ◽  
Wei Wang ◽  
Sheng Liu ◽  
...  
Keyword(s):  
Cathode Materials ◽  
High Performance ◽  
Catalytic Conversion ◽  
High Energy ◽  
Electrochemical Kinetics ◽  
Lithium Sulfur Batteries ◽  
Doped Graphene ◽  
Sulfur Battery ◽  
Areal Capacity ◽  
Lithium Sulfur

A sufficient areal capacity is necessary for achieving high-energy lithium sulfur battery, which requires high enough sulfur loading in cathode materials. Therefore, kinetically fast catalytic conversion of polysulfide intermediates is...

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