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.

MgCo layered double hydroxide-based yolk shell polyhedrons as multifunctional sulfur mediator for lithium-sulfur batteries

2021 ◽  
Author(s):  
Kai Zhang ◽  
You Li ◽  
Hongyu Wang ◽  
Zisheng Zhang ◽  
Guihua Liu ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
High Discharge ◽  
Shuttle Effect ◽  
High Discharge Capacity ◽  
Host Materials ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Double Hydroxide ◽  
Areal Capacity ◽  
Lithium Sulfur

Abstract The development of efficient sulfur host materials to address the shuttle effect issues of lithium polysulfides (LiPSs) is crucial in the lithium-sulfur (Li-S) batteries, but still challenging. In the present study, a novel yolk shell structured MgCo-LDH/ZIF-67 composite is designed as Li-S battery cathode. In this composite, the shell layer is MgCo layered double hydroxide constructed by partially etching ZIF-67 nanoparticle by Mg2+, and the core is the unreacted ZIF-67 particle. The unique yolk shell structure not only provides abundant pores for sulfur accommodation, but also facilitates the electrolyte penetration and ion transport. The ZIF-67 core exhibits strong polar adsorption to LiPSs through the Lewis acid-base interactions, and the micropores/mesoporous can further trap LiPSs. Meanwhile, the MgCo-LDH shell exposes enough sulfur-philic sites for enhancing chemisorption and catalyzes the LiPSs conversion. As a result, when MgCo-LDH/ZIF-67 is used as sulfur host in the cathode, the cell achieves a high discharge capacity of 1121 mAh g-1 at 0.2 C, and an areal capacity of 5.0 mAh cm-2 under the high sulfur loading of 5.8 mg cm-2. The S/MgCo-LDH/ZIF-67 electrode holds a promising potential for the development of Li-S batteries.

Separator modified by Ketjen black for enhanced electrochemical performance of lithium–sulfur batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (17) ◽  
pp. 13680-13685 ◽  
Author(s):  
Di Zhao ◽  
Xinye Qian ◽  
Lina Jin ◽  
Xiaolong Yang ◽  
Shanwen Wang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Side ◽  
Electrochemical Performances ◽  
Lithium Sulfur Batteries ◽  
Enhanced Electrochemical Performance ◽  
Lithium Sulfur

A routine separator modified by a Ketjen black (KB) layer on the cathode side has been investigated to improve the electrochemical performances of Li–S batteries.

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 Synthesis of highly electrochemically active Li2S nanoparticles for lithium–sulfur-batteries

2015 ◽  
Vol 3 (31) ◽  
pp. 16307-16312 ◽  
Author(s):  
M. Kohl ◽  
J. Brückner ◽  
I. Bauer ◽  
H. Althues ◽  
S. Kaskel
Keyword(s):  
Melting Point ◽  
Carbothermal Reduction ◽  
Lithium Sulfate ◽  
High Discharge ◽  
Lithium Sulfide ◽  
Electrochemically Active ◽  
Lithium Sulfur Batteries ◽  
Source Particle ◽  
Discharge Capacities ◽  
Lithium Sulfur

Carbothermal reduction of lithium sulfate below its melting point was used to produce sub-micron sized lithium sulfide particles which retain the morphology of the source particle and achieve high discharge capacities up to 1360 mA h gsulfur−1.

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