A wet-processed, binder-free sulfur cathode integrated with a dual-functional separator for flexible Li–S batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 5483-5493 ◽  
Author(s):  
Xuewei Fu ◽  
Francis Dunne ◽  
Min Chen ◽  
Wei-Hong Zhong
Keyword(s):  
Sulfur Cathode ◽  
Dual Functional ◽  
Binder Free ◽  
Sulfur Cathodes ◽  
Free Sulfur

A dissolving–recrystallizing strategy for fabricating binder-free flexible sulfur cathodes integrated with dual-functional separators is reported.

scholarly journals Operando soft X-ray absorption spectroscopic study on microporous carbon-supported sulfur cathodes

RSC Advances ◽  
2020 ◽  
Vol 10 (65) ◽  
pp. 39875-39880
Author(s):  
Yao Xiao ◽  
Kentaro Yamamoto ◽  
Yukiko Matsui ◽  
Toshiki Watanabe ◽  
Koji Nakanishi ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Spectroscopic Study ◽  
Microporous Carbon ◽  
Sulfur Cathode ◽  
X Ray ◽  
X Ray Absorption ◽  
Sulfur Cathodes

The reaction mechanism of the sulfur cathode in the microporous carbon during discharge was observed by operando XAS.

Graphene Oxide Interlayered in binder-free Sulfur Vapor Deposited Cathode for Lithium-Sulfur Battery

2022 ◽  
Author(s):  
Mahdieh Hakimi ◽  
Zeinab Sanaee ◽  
Shahnaz Ghasemi ◽  
Shamsoddin Mohajerzadeh
Keyword(s):  
Graphene Oxide ◽  
Coulombic Efficiency ◽  
Morphological Characteristics ◽  
Deposition Process ◽  
Sulfur Cathode ◽  
Shuttle Effect ◽  
Binder Free ◽  
The One ◽  
Sulfur Battery ◽  
Lithium Sulfur

Abstract The main drawback of Lithium-Sulfur (Li-S) batteries which leads to a short lifetime, is the shuttle effect during the battery operation. One of the solutions to mitigate the shuttle effect is the utilization of interlayers. Herein, graphene oxide (GO) paper as an interlayer has been implemented between the sulfur cathode fabricated by the vapor deposition process as a binder-free electrode and a separator in a Li-S battery in order to gain a sufficient capacity. The morphological characteristics and electrochemical performance of the fabricated electrode have been investigated. The fabricated battery demonstrates an initial discharge capacity of 1265.46 mAh g-1 at the current density of 100 mA g-1. The coulombic efficiency is obtained to be 88.49% after 40 cycles. The remained capacity for the battery is 44.70% after several cycles at different current densities. The existence of the GO interlayer improves the electrochemical properties of the battery compared to the one with a pure sulfur cathode. The obtained results indicate that after 40 cycles, the capacity retention is 2.1 times more than that of the battery without the GO implementation.

Flexible freestanding sandwich-structured sulfur cathode with superior performance for lithium–sulfur batteries

2014 ◽  
Vol 2 (23) ◽  
pp. 8623-8627 ◽  
Author(s):  
Jiangxuan Song ◽  
Zhaoxin Yu ◽  
Terrence Xu ◽  
Shuru Chen ◽  
Hiesang Sohn ◽  
...  
Keyword(s):  
Rate Capability ◽  
Cycling Stability ◽  
Superior Performance ◽  
Sulfur Cathode ◽  
Lithium Sulfur Batteries ◽  
Excellent Cycling Stability ◽  
Sulfur Cathodes ◽  
Areal Capacity ◽  
Lithium Sulfur

Flexible freestanding sandwich-structured sulfur cathodes are developed for lithium–sulfur batteries, which exhibit excellent cycling stability and rate capability. A high areal capacity of ∼4 mA h cm−2 is also demonstrated based on this new cathode configuration.

Gel based sulfur cathodes with a high sulfur content and large mass loading for high-performance lithium–sulfur batteries

2017 ◽  
Vol 5 (4) ◽  
pp. 1650-1657 ◽  
Author(s):  
Shiqi Li ◽  
Tong Mou ◽  
Guofeng Ren ◽  
Juliusz Warzywoda ◽  
Zidong Wei ◽  
...  
Keyword(s):  
Sulfur Content ◽  
High Performance ◽  
Large Mass ◽  
Mass Loading ◽  
Sulfur Cathode ◽  
High Sulfur Content ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur ◽  
High Sulfur Loading

A bacterial cellulose based carbon nanoribbon aerogel was employed for a gel-based sulfur cathode, simultaneously achieving both a high sulfur content (90%) and a high sulfur loading (6.4 mg cm−2) with a large capacity of 943 mA h g−1or 5.9 mA h cm−2.

A binder-free sulfur/carbon composite electrode prepared by a sulfur sublimation method for Li–S batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (58) ◽  
pp. 52642-52645 ◽  
Author(s):  
Yi Cui ◽  
Min Wu ◽  
Charity Scott ◽  
Jiani Xie ◽  
Yongzhu Fu
Keyword(s):  
Composite Electrode ◽  
Carbon Composite ◽  
Carbon Paper ◽  
Paper Substrate ◽  
Long Cycle Life ◽  
Sublimation Method ◽  
Binder Free ◽  
Carbon Composite Electrode ◽  
Sulfur Nanoparticles ◽  
Free Sulfur

A binder-free sulfur/carbon composite electrode was prepared by a sulfur sublimation method. Sulfur nanoparticles fill large pores in a carbon paper substrate and the composite electrode shows a long cycle life of over 200 cycles in Li–S batteries.

A lithium–sulfur cathode with high sulfur loading and high capacity per area: a binder-free carbon fiber cloth–sulfur material

2014 ◽  
Vol 50 (87) ◽  
pp. 13231-13234 ◽  
Author(s):  
Lixiao Miao ◽  
Weikun Wang ◽  
Keguo Yuan ◽  
Yusheng Yang ◽  
Anbang Wang
Keyword(s):  
High Capacity ◽  
Sulfur Cathode ◽  
Improve Performance ◽  
Simple Method ◽  
Carbon Fiber Cloth ◽  
Binder Free ◽  
Polysulfide Ions ◽  
Lithium Sulfur ◽  
High Sulfur Loading

A high capacity per area (>7 mA h cm−2) sulfur cathode with high sulfur loading (6.7 mg cm−2) was fabricated by a simple method. An ingenuity method is adopted which can improve performance of Li–S battery by forming in-situ polysulfide ions.

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