Preparation and Performance of Porous Polyetherimide/Al 2 O 3 Separator for Enhanced Lithium‐Sulfur Batteries

2019 ◽  
Vol 6 (11) ◽  
pp. 2883-2890 ◽  
Author(s):  
Fangfang Zhu ◽  
Jiuqing Liu ◽  
Haijun Zhao ◽  
Jie Li ◽  
Qihou Li ◽  
...  
Keyword(s):  
Lithium Sulfur Batteries ◽  
And Performance ◽  
Lithium Sulfur

scholarly journals MOF-Derived Co3O4 Polyhedrons as Efficient Polysulfides Barrier on Polyimide Separators for High Temperature Lithium–sulfur Batteries

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1574 ◽  
Author(s):  
Zhou ◽  
Li ◽  
Fang ◽  
Zhao ◽  
Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Ionic Conductivity ◽  
Inorganic Compounds ◽  
Metal Organic Framework ◽  
Zeolitic Imidazolate Frameworks ◽  
Lithium Sulfur Batteries ◽  
Lithium Dendrites ◽  
Small Primary ◽  
And Performance ◽  
Lithium Sulfur

The incorporation of highly polarized inorganic compounds in functional separators is expected to alleviate the high temperature safety- and performance-related issues for promising lithium–sulfur batteries. In this work, a unique Co3O4 polyhedral coating on thermal-stable polyimide (PI) separators was developed by a simple one-step low-temperature calcination method utilizing metal-organic framework (MOF) of Co-based zeolitic-imidazolate frameworks (ZIF-Co) precursors. The unique Co3O4 polyhedral structures possess several structural merits including small primary particle size, large pore size, rich grain boundary, and high ionic conductivity, which endow the ability to adequately adsorb dissolved polysulfides. The flexible-rigid lithium-lanthanum-zirconium oxide-poly(ethylene oxide) (LLZO-PEO) coating has been designed on another side of the polyimide non-woven membranes to inhibit the growth of lithium dendrites. As a result, the as-fabricated Co3O4/polyimide/LLZO-PEO (Co3O4/PI/LLZO) composite separators displayed fair dimensional stability, good mechanical strength, flame retardant properties, and excellent ionic conductivity. More encouragingly, the separator coating of Co3O4 polyhedrons endows Li–S cells with unprecedented high temperature properties (tested at 80 °C), including rate performance 620 mAh g−1 at 4.0 C and cycling stability of 800 mAh g−1 after 200 cycles—much better than the state-of-the-art results. This work will encourage more research on the separator engineering for high temperature operation.

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.

Architecture and Performance of the Novel Sulfur Host Material Based on Ti2O3 Microspheres for Lithium–Sulfur Batteries

2019 ◽  
Vol 11 (25) ◽  
pp. 22439-22448 ◽  
Author(s):  
Peng Zeng ◽  
Manfang Chen ◽  
Shouxin Jiang ◽  
Yongfang Li ◽  
Xin Xie ◽  
...  
Keyword(s):  
Host Material ◽  
The Novel ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
And Performance ◽  
Lithium Sulfur

Sulfur loaded in curved graphene and coated with conductive polyaniline: preparation and performance as a cathode for lithium–sulfur batteries

2015 ◽  
Vol 3 (35) ◽  
pp. 18098-18104 ◽  
Author(s):  
Xiaogang Li ◽  
Mumin Rao ◽  
Haibin Lin ◽  
Dongrui Chen ◽  
Yanlin Liu ◽  
...  
Keyword(s):  
Rate Capability ◽  
Cyclic Stability ◽  
Lithium Sulfur Batteries ◽  
Conductive Polyaniline ◽  
And Performance ◽  
Lithium Sulfur

CG-S@PANI exhibits good cyclic stability and rate capability due to the co-contribution of CG and PANI.

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