A MoO3/MoO2-CP self-supporting heterostructure for modification of lithium–sulfur batteries

2020 ◽  
Vol 8 (31) ◽  
pp. 15816-15821 ◽  
Author(s):  
Weiwei Yang ◽  
Yi Wei ◽  
Qian Chen ◽  
Shengjian Qin ◽  
Jinghan Zuo ◽  
...  
Keyword(s):  
Cycling Performance ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

A unique MoO3/MoO2 heterostructure with an active interface is an ideal host for Li2S8, exhibiting superior rate and long-term cycling performance.

Immobilization of sulfur by constructing three-dimensional nitrogen rich carbons for long life lithium–sulfur batteries

2017 ◽  
Vol 5 (18) ◽  
pp. 8360-8366 ◽  
Author(s):  
Yingbin Tan ◽  
Zhihui Zheng ◽  
Shiting Huang ◽  
Yongzhe Wang ◽  
Zhonghui Cui ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Cycling Performance ◽  
N Content ◽  
Lithium Sulfur Batteries ◽  
Long Life ◽  
Pyridinic N ◽  
Lithium Sulfur

A 3D nanostructured NCNTs–CS–ZIF-8(C) hybrid with high pyridinic-N content exhibits stable long-term cycling performance.

scholarly journals Construction of ultrathin MnO2 decorated graphene/carbon nanotube nanocomposites as efficient sulfur hosts for high-performance lithium–sulfur batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 6346-6355 ◽  
Author(s):  
Nan Wang ◽  
Sikan Peng ◽  
Xiang Chen ◽  
Jixian Wang ◽  
Chen Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Cycling Performance ◽  
High Rate ◽  
Rate Performance ◽  
Lithium Sulfur Batteries ◽  
Sulfur Hosts ◽  
High Rate Performance ◽  
Nano Size ◽  
Lithium Sulfur

Ultrathin MnO2 nanosheets and nano size sulfur particles distributed uniformly on the surface of G/CNT hybrids, which exhibit high rate performance and long-term cycling performance.

Ultra-long-term cycling stability of an integrated carbon–sulfur membrane with dual shuttle-inhibiting layers of graphene “nets” and a porous carbon skin

2018 ◽  
Vol 54 (40) ◽  
pp. 5090-5093 ◽  
Author(s):  
Mingkai Liu ◽  
Qinghua Meng ◽  
Zhiyuan Yang ◽  
Xinsheng Zhao ◽  
Tianxi Liu
Keyword(s):  
Porous Carbon ◽  
Cycling Performance ◽  
Cycling Stability ◽  
The Poor ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

An integrated carbon–sulfur membrane (CSG/PC) with dual “shuttle-inhibiting” layers of graphene “nets” and a porous carbon (PC) skin can overcome the poor cycling performance of lithium–sulfur batteries.

Facile Synthesis of Uniform Carbon Coated Li2S/rGO cathode for High-Performance Lithium-Sulfur Batteries

MRS Advances ◽  
2018 ◽  
Vol 3 (60) ◽  
pp. 3501-3506 ◽  
Author(s):  
Gaind P. Pandey ◽  
Joshua Adkins ◽  
Lamartine Meda
Keyword(s):  
High Performance ◽  
Active Material ◽  
Cycling Performance ◽  
High Energy ◽  
High Energy Density ◽  
Shell Nanostructures ◽  
Lithium Sulfur Batteries ◽  
Carbon Coated ◽  
Co Precipitation ◽  
Lithium Sulfur

ABSTRACTLithium sulfide (Li2S) is one of the most attractive cathode materials for high energy density lithium batteries as it has a high theoretical capacity of 1166 mA h g-1. However, Li2S suffers from poor rate performance and short cycle life due to its insulating nature and polysulfide shuttle during cycling. In this work, we report a facile and viable approach to address these issues. We propose a method to synthesize a Li2S based nanocomposite cathode material by dissolving Li2S as the active material, polyvinylpyrrolidone (PVP) as the carbon precursor, and graphene oxide (GO) as a matrix to enhance the conductivity, followed by a co-precipitation and high-temperature carbonization process. The Li2S/rGO cathode yields an exceptionally high initial capacity of 817 mAh g-1 based on Li2S mass at C/20 rate and also shows a good cycling performance. The carbon-coated Li2S/rGO cathode demonstrates the capability of robust core-shell nanostructures for different rates and improved capacity retention, revealing carbon coated Li2S/rGO composites as an outstanding system for high-performance lithium-sulfur batteries.

PAA/PEDOT:PSS as a multifunctional, water-soluble binder to improve the capacity and stability of lithium–sulfur batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (47) ◽  
pp. 40650-40655 ◽  
Author(s):  
Jin Pan ◽  
Guiyin Xu ◽  
Bing Ding ◽  
Zhi Chang ◽  
Aixiu Wang ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Cycling Performance ◽  
Water Soluble ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

An improved cycling performance of sulfur cathodes is attributed to the synergistic effect of PAA and PEDOT:PSS.

Pig bone derived hierarchical porous carbon and its enhanced cycling performance of lithium–sulfur batteries

2011 ◽  
Vol 4 (3) ◽  
pp. 736 ◽  
Author(s):  
Shaochen Wei ◽  
Hao Zhang ◽  
Yaqin Huang ◽  
Weikun Wang ◽  
Yuzhen Xia ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Cycling Performance ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

scholarly journals Mesoporous hollow carbon spheres for lithium–sulfur batteries: distribution of sulfur and electrochemical performance

2016 ◽  
Vol 7 ◽  
pp. 1229-1240 ◽  
Author(s):  
Anika C Juhl ◽  
Artur Schneider ◽  
Boris Ufer ◽  
Torsten Brezesinski ◽  
Jürgen Janek ◽  
...  
Keyword(s):  
High Vacuum ◽  
Cycling Performance ◽  
Carbon Spheres ◽  
X Ray Diffraction ◽  
Composite Cathodes ◽  
Lithium Sulfur Batteries ◽  
Cavity Filling ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Lithium Sulfur

Hollow carbon spheres (HCS) with a nanoporous shell are promising for the use in lithium–sulfur batteries because of the large internal void offering space for sulfur and polysulfide storage and confinement. However, there is an ongoing discussion whether the cavity is accessible for sulfur. Yet no valid proof of cavity filling has been presented, mostly due to application of unsuitable high-vacuum methods for the analysis of sulfur distribution. Here we describe the distribution of sulfur in hollow carbon spheres by powder X-ray diffraction and Raman spectroscopy along with results from scanning electron microscopy and nitrogen physisorption. The results of these methods lead to the conclusion that the cavity is not accessible for sulfur infiltration. Nevertheless, HCS/sulfur composite cathodes with areal sulfur loadings of 2.0 mg·cm−2 were investigated electrochemically, showing stable cycling performance with specific capacities of about 500 mAh·g−1 based on the mass of sulfur over 500 cycles.

Conductive cobalt doped niobium nitride porous spheres as an efficient polysulfide convertor for advanced lithium-sulfur batteries

2020 ◽  
Vol 8 (13) ◽  
pp. 6276-6282 ◽  
Author(s):  
Weini Ge ◽  
Lu Wang ◽  
Chuanchuan Li ◽  
Chunsheng Wang ◽  
Debao Wang ◽  
...  
Keyword(s):  
Niobium Nitride ◽  
Cycle Stability ◽  
Lithium Sulfur Batteries ◽  
And Performance ◽  
Sulfur Hosts ◽  
Porous Spheres ◽  
Lithium Sulfur ◽  
High Sulfur Loading

Porous Co-NbN spheres with excellent conductivity are used as sulfur hosts for lithium-sulfur batteries, which deliver excellent long-term cycle stability and performance with a high sulfur loading and lean electrolyte.

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