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.

Sulfur–hydrazine hydrate-based chemical synthesis of sulfur@graphene composite for lithium–sulfur batteries

2018 ◽  
Vol 5 (4) ◽  
pp. 785-792 ◽  
Author(s):  
Jianmei Han ◽  
Baojuan Xi ◽  
Zhenyu Feng ◽  
Xiaojian Ma ◽  
Junhao Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Chemical Synthesis ◽  
Hydrazine Hydrate ◽  
Rate Capability ◽  
Graphene Composite ◽  
Reduced Graphene ◽  
Lithium Sulfur Batteries ◽  
Good Rate Capability ◽  
Lithium Sulfur ◽  
Excellent Stability

A sulfur–hydrazine hydrate chemistry-based method is reported here to integrate the sulfur and N-doped reduced graphene oxide to obtain S@N-rGO composite with 76% sulfur. The as-obtained S@N-rGO composite displays a good rate capability and excellent stability.

Ultrastable lithium–sulfur batteries with outstanding rate capability boosted by NiAs-type vanadium sulfides

2020 ◽  
Vol 8 (35) ◽  
pp. 18358-18366
Author(s):  
Chao Yue Zhang ◽  
Guo Wen Sun ◽  
Yun Fei Bai ◽  
Zhe Dai ◽  
Yi Rong Zhao ◽  
...  
Keyword(s):  
High Performance ◽  
Rate Capability ◽  
Lithium Sulfur Batteries ◽  
Vanadium Sulfide ◽  
New Type ◽  
Nias Type ◽  
Lithium Sulfur

A new type of vanadium sulfide (V2S3) was used for high-performance lithium–sulfur batteries.

High capacity and rate capability of S/3D ordered bimodal mesoporous carbon cathode for lithium/sulfur batteries

2019 ◽  
Vol 34 (4) ◽  
pp. 600-607
Author(s):  
Yan Song ◽  
Jun Ren ◽  
Guoyan Wu ◽  
Wulin Zhang ◽  
Chengwei Zhang ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
High Capacity ◽  
Rate Capability ◽  
Carbon Cathode ◽  
Lithium Sulfur Batteries ◽  
Image Position ◽  
Lithium Sulfur

Abstract

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.

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.

scholarly journals Functionally Modified Polyolefin-Based Separators for Lithium-Sulfur Batteries: Progress and Prospects

2020 ◽  
Vol 8 ◽  
Author(s):  
Jiaojiao Li ◽  
Zhen Xiao ◽  
Anqi Chen ◽  
Wenkui Zhang ◽  
Dongmin Zhu ◽  
...  
Keyword(s):  
Physical Adsorption ◽  
Rate Capability ◽  
Future Perspective ◽  
Portable Devices ◽  
Working Mechanism ◽  
Practical Utilization ◽  
Hybrid Mechanism ◽  
Lithium Sulfur Batteries ◽  
Intractable Problems ◽  
Lithium Sulfur

The ever-growing demand for portable devices and electric vehicles are drawing widespread attention to advanced energy storage systems. Over the past few decades, lithium-sulfur batteries (LSBs) have vast potential to act as the next-generation of rechargeable power source due to their high theoretical specific energy, cost-effectiveness, and environmental benignity. However, insufficient sulfur utilization, inferior cyclability, and rate capability originating from the intrinsic insulating features of the sulfur and notorious polysulfide shuttle are major obstacles to fulfilling the industrialization of LSBs. In this respect, the introduction of a functional barrier layer coating on a separator has been verified as an effective strategy to overcome the aforementioned intractable problems. In this review, we focus on summarizing the current progress of the modified polyolefin-based separators (known as functional separators), including functional separator facing cathodes and functional separator facing anodes. According to the working mechanism, functional separator facing cathodes are divided into physical adsorption separators, chemical adsorption separators, catalytic conversion separators, and multifunctional separators. Meanwhile, functional separator facing anodes are classified into physical barrier separators, induced lithium growth separators, regulated lithium nucleation separators, and hybrid mechanism separators. Finally, the future perspective coupled with the practical utilization of functional separators in LSBs is proposed.

Enhanced rate capability and cycle stability of lithium–sulfur batteries with a bifunctional MCNT@PEG-modified separator

2015 ◽  
Vol 3 (13) ◽  
pp. 7139-7144 ◽  
Author(s):  
Guanchao Wang ◽  
Yanqing Lai ◽  
Zhian Zhang ◽  
Jie Li ◽  
Zhiyong Zhang
Keyword(s):  
Rate Capability ◽  
Cycle Stability ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Modified Separator

A MCNT@PEG composite is designed to modify the commercial separator of Li-S cells. With the MCNT@PEG-modified separator, Li-S cells possess enhanced rate capability and cycle stability.

Increasing Electrical Conductivity of Free-Standing Sulfurized Polyacrylonitrile Cathode for Lithium–Sulfur Batteries

2020 ◽  
Vol 12 (10) ◽  
pp. 1441-1445
Author(s):  
Huihun Kim ◽  
Seon-Hwa Choe ◽  
Milan K. Sadan ◽  
Changhyeon Kim ◽  
Kwon-Koo Cho ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Specific Capacity ◽  
Rate Capability ◽  
Charge Transfer Resistance ◽  
Acetylene Black ◽  
Free Standing ◽  
Transfer Resistance ◽  
Lithium Sulfur Batteries ◽  
Multi Walled Carbon Nanotubes ◽  
Lithium Sulfur

Sulfurized polyacrylonitrile (S-PAN) is one of the best materials for addressing some of the intrinsic drawbacks of lithium–sulfur batteries, such as the intrinsic insulating properties of sulfur and the shuttle phenomenon. Moreover, while S-PAN nanofiber composites are flexible, they still presents shortcomings, such as low rate capability, which is due to their semiconductor electrical conductivity. In this study, we prepared S-PAN webs with high electrical conductivity via electrospinning using conducting agents. Additionally, we analyzed the electrochemical properties of the S-PAN webs prepared using various conducting agents (acetylene black, Ketjen black, and multi-walled carbon nanotubes). The specific capacity of the S-PAN web prepared using acetylene black was 740 mAh g–1 at the charge rate of 5 C. The excellent rate capability of S-PAN prepared using acetylene black was attributed to its low electrical resistance and low charge transfer resistance.

Orange Peels Derived Activated Carbon as Sulfur Cathode Supporter for Lithium/Sulfur Batteries

2015 ◽  
Vol 1120-1121 ◽  
pp. 493-497
Author(s):  
Guang Hui Yuan ◽  
Jin Tao Bai
Keyword(s):  
Rate Capability ◽  
Orange Peel ◽  
Raw Material ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Orange Peels ◽  
Lithium Sulfur Batteries ◽  
Wrinkled Surface ◽  
Enhanced Electrochemical Performance ◽  
Lithium Sulfur

Using Orange Peels as Raw Material, a Stacking Structured Carbon Material has been Synthesized through Carbonizing and Activating Process. an Orange Peel Carbon/sulfur (OPC/S) Composite as a Cathode for Rechargeable Lithium/sulfur (Li/S) Batteries is Designed by Loading Sulfur into the Orange Peel Carbon (OPC) via Simple Impregnation and Heat Treatments. the OPC/S Composite Exhibits a High Discharge Capacity of 1100 mAh g−1 at 0.1 C, which is 23% Higher than that of Pristine Sulfur. Moreover, OPC/S Shows much Better Rate Capability and Excellent Cyclability. this Enhanced Electrochemical Performance could Be Attributed to the Thin Sheets and Irregular Wrinkled Surface of the OPC, which Act as a Conductor to Provide a Highly Conductivity and Short Li+ Diffusion Distance, as well as Absorbs Polysulfides.

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