Graphene/Sulfur@Graphene Composite Structure Material for a Lithium-Sulfur Battery Cathode

Graphene/sulfur@graphene composite structure as a cathode material is synthesized with a facile method. Graphene can provide a more efficient conductive network for sulfur and improve the coulombic efficiency of the battery. On the other hand, it may also show the anchoring effect on sulfur, which reduces the loss of sulfur and improves the cycling performance of the battery. Due to the unique structure, the initial discharge capacity of a battery assembled with this structure could reach 1036 mAh g−1 at 0.1 C, and its reversible capacity of 619 mAh g−1 was retained after 200 cycles with a low fading rate of 0.2% per cycle. The battery could hold a discharge capacity of 501 mAh g−1 after 200 cycles at 0.5 C. Thus, the electrochemical performance improved because of the reduction of sulfur loss through polysulfide accumulation at the cathode.

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Fabrication of layered Ti3C2 with an accordion-like structure as a potential cathode material for high performance lithium–sulfur batteries

Journal of Materials Chemistry A ◽

10.1039/c4ta07101h ◽

2015 ◽

Vol 3 (15) ◽

pp. 7870-7876 ◽

Cited By ~ 93

Author(s):

Xiaoqin Zhao ◽

Min Liu ◽

Yong Chen ◽

Bo Hou ◽

Na Zhang ◽

...

Keyword(s):

Cathode Material ◽

Discharge Capacity ◽

High Performance ◽

Coulombic Efficiency ◽

Initial Discharge Capacity ◽

Capacity Retention ◽

Initial Discharge ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

L-Ti3C2 was prepared by exfoliating Ti3AlC2 in 40% HF. With sulfur-loaded L-Ti3C2 as cathodes, Li–S batteries deliver a high initial discharge capacity of 1291 mA h g−1, an excellent capacity retention of 970 mA h g−1 and coulombic efficiency of 99% after 100 cycles.

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MOF-derived NiO–NiCo2O4@PPy hollow polyhedron as a sulfur immobilizer for lithium–sulfur batteries

New Journal of Chemistry ◽

10.1039/c9nj04581c ◽

2019 ◽

Vol 43 (46) ◽

pp. 18294-18303 ◽

Cited By ~ 2

Author(s):

Fengchao Xu ◽

Bo Jin ◽

Huan Li ◽

Wentao Ju ◽

Zi Wen ◽

...

Keyword(s):

Discharge Capacity ◽

Coulombic Efficiency ◽

Cell Performance ◽

Initial Discharge Capacity ◽

Initial Discharge ◽

Lithium Sulfur Batteries ◽

Sulfur Host ◽

Initial Coulombic Efficiency ◽

Lithium Sulfur

A MOF-derived NiO–NiCo2O4@PPy hollow polyhedron is prepared as a sulfur host to effectively enhance cell performance. S/NiO–NiCo2O4@PPy displays a high initial discharge capacity of 963 mA h g−1 with a high initial coulombic efficiency of 95.2% at 0.2C.

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The facile synthesis and enhanced lithium–sulfur battery performance of an amorphous cobalt boride (Co2B)@graphene composite cathode

Journal of Materials Chemistry A ◽

10.1039/c8ta09301f ◽

2018 ◽

Vol 6 (47) ◽

pp. 24045-24049 ◽

Cited By ~ 19

Author(s):

Bin Guan ◽

LiShuang Fan ◽

Xian Wu ◽

Pengxiang Wang ◽

Yue Qiu ◽

...

Keyword(s):

Synergistic Effect ◽

Specific Capacity ◽

Composite Cathode ◽

Cycling Performance ◽

Facile Synthesis ◽

Graphene Composite ◽

Cobalt Boride ◽

Sulfur Host ◽

Sulfur Battery ◽

Lithium Sulfur

The facile synthesis of (Co2B)@graphene as a novel sulfur host, which provides good specific capacity and cycling performance, endowed by the unique “synergistic effect” of Co and B.

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Boron-doped porous Si anode materials with high initial coulombic efficiency and long cycling stability

Journal of Materials Chemistry A ◽

10.1039/c7ta10153h ◽

2018 ◽

Vol 6 (7) ◽

pp. 3022-3027 ◽

Cited By ~ 46

Author(s):

Ming Chen ◽

Bo Li ◽

Xuejiao Liu ◽

Ling Zhou ◽

Lin Yao ◽

...

Keyword(s):

Anode Materials ◽

Coulombic Efficiency ◽

Reversible Capacity ◽

Cycling Performance ◽

Cycling Stability ◽

Porous Si ◽

Boron Doped ◽

Si Anode ◽

Initial Coulombic Efficiency

B-Doped pSi exhibits an exceptionally high initial coulombic efficiency of 89% and shows outstanding cycling performance (reversible capacity of 1500 mA h g−1 at 2 A g−1 after 300 cycles).

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Synthesis and Electrochemical Performance of SnO2/Graphene Hybrid Anode for Lithium Ion Batteries

MRS Proceedings ◽

10.1557/opl.2013.1040 ◽

2013 ◽

Vol 1540 ◽

Author(s):

Chia-Yi Lin ◽

Chien-Te Hsieh ◽

Ruey-Shin Juang

Keyword(s):

Electrochemical Performance ◽

Lithium Ion Batteries ◽

Anode Material ◽

High Performance ◽

Coulombic Efficiency ◽

Rate Capability ◽

Lithium Ion ◽

Reversible Capacity ◽

Cycling Performance ◽

Homogeneous Distribution

ABSTRACTAn efficient microwave-assisted polyol (MP) approach is report to prepare SnO2/graphene hybrid as an anode material for lithium ion batteries. The key factor to this MP method is to start with uniform graphene oxide (GO) suspension, in which a large amount of surface oxygenate groups ensures homogeneous distribution of the SnO2 nanoparticles onto the GO sheets under the microwave irradiation. The period for the microwave heating only takes 10 min. The obtained SnO2/graphene hybrid anode possesses a reversible capacity of 967 mAh g-1 at 0.1 C and a high Coulombic efficiency of 80.5% at the first cycle. The cycling performance and the rate capability of the hybrid anode are enhanced in comparison with that of the bare graphene anode. This improvement of electrochemical performance can be attributed to the formation of a 3-dimensional framework. Accordingly, this study provides an economical MP route for the fabrication of SnO2/graphene hybrid as an anode material for high-performance Li-ion batteries.

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

Journal of Physics D Applied Physics ◽

10.1088/1361-6463/ac4b55 ◽

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.

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Combined enhanced redox kinetics and physiochemical confinement in three-dimensionally ordered macro/mesoporous TiN for highly stable lithium-sulfur batteries

Nanotechnology ◽

10.1088/1361-6528/ac3e30 ◽

2021 ◽

Author(s):

Jiabing Liu ◽

Chenchen Hu ◽

Wanjie Gao ◽

Haipeng Li ◽

Yan Zhao

Keyword(s):

Discharge Capacity ◽

Active Sites ◽

Surface Region ◽

Cycling Performance ◽

Great Promise ◽

Energy Storage Devices ◽

Shuttle Effect ◽

Practical Applications ◽

Redox Kinetics ◽

Lithium Sulfur

Abstract Lithium-sulfur (Li-S) batteries with tremendous energy density possess great promise for the next-generation energy storage devices. Even though, the shuttle effect and sluggish redox kinetics of lithium polysulfides (LiPSs) seriously restrict practical applications of Li-S batteries. Herein, a three-dimensionally ordered macro/mesoporous TiN (3DOM TiN) nanostructure is established via using poly (methyl methacrylate) PMMA spheres as template. The interconnected macro/mesoporous channels are constructed to effectively alleviate the stacking of composite materials and render a large portion of inherent active sites exposed on the surface region. Moreover, TiN exhibits high electrical conductivity, which efficiently enhances charge transfer kinetics and guarantees the favorable electrochemical performance of sulfur cathode. More importantly, the as-prepared 3DOM TiN suppresses the shuttle effect and improves the redox kinetics significantly due to strong affinity toward LiPSs. Attributed to these unique features, the S/3DOM TiN electrode achieves an ultrahigh initial discharge capacity of 1187 mAh g-1 at 0.2 C, and stable cycling performance of 552 mAh g-1 over 500 cycles at 1 C. Meanwhile, the discharge capacity retention of 701 mAh g-1 (3.5 mAh cm-2) can be endowed for the S/3DOM TiN electrode under high sulfur loading of 5 mg cm-2 after 100 cycles at 0.1 C. Therefore, the 3DOM TiN nanostructure electrocatalyst provides a promising path for developing practically useable Li-S batteries.

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Sulfur impregnation in polypyrrole-modified MnO2 nanotubes: efficient polysulfide adsorption for improved lithium–sulfur battery performance

Nanoscale ◽

10.1039/c8nr10353d ◽

2019 ◽

Vol 11 (20) ◽

pp. 10097-10105 ◽

Cited By ~ 9

Author(s):

Pengcheng Du ◽

Wenli Wei ◽

Yuman Dong ◽

Dong Liu ◽

Qi Wang ◽

...

Keyword(s):

Outer Layer ◽

Specific Capacity ◽

Cycling Performance ◽

Lithium Sulfur Battery ◽

Highly Efficient ◽

Hollow Interior ◽

Sulfur Host ◽

Sulfur Battery ◽

Lithium Sulfur

PPy-coated MnO2 nanotubes were fabricated as a highly efficient sulfur host. Hollow interior of the MnO2 nanotubes and the polypyrrole outer layer can effectively improve the specific capacity and maintain an extremely stable cycling performance.

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