Facile and Scalable Synthesis of Copolymer-Sulfur Composites as Cathodes for High Performance Lithium-Sulfur Batteries

MRS Advances ◽  
2017 ◽  
Vol 2 (54) ◽  
pp. 3271-3276 ◽  
Author(s):  
Jingjing Liu ◽  
Brennan Campbell ◽  
Rachel Ye ◽  
Jeffrey Bell ◽  
Zafer Mutlu ◽  
...  
Keyword(s):  
Sulfur Content ◽  
High Performance ◽  
Active Material ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Composite Cathode ◽  
Cycling Performance ◽  
Commercial Application ◽  
Lithium Sulfur Batteries ◽  
Scalable Synthesis

ABSTRACTTo promote the energy density of lithium-ion battery, the sulfur-based cathode has attracted extensive attention because of its high specific capacity of 1672 mAh g-1 and its high abundance. However, the sulfur shuttling effects and the loss of active material during lithiation hinder its commercial application. To tackle these issues, we synthesized a stable copolymer-sulfur composite by chemically binding sulfur. The composite with 86% sulfur content was prepared using 1,3-diethynylbenzen and sulfur particles via scalable invers vulcanization. The sulfur content in copolymer sulfur was achieved as high as 86%. Our copolymer-sulfur composite cathode showed excellent cycling performance with a specific capacity of 454 mAh g-1 at 0.1 C after 300 cycles. We demonstrate that the organosulfur-DEB units in the copolymer-sulfur composite serve as the ‘plasticizer’ to effectively prevent the polysulfide shuttling.

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.

scholarly journals Electrospun Fe3O4-Sn@Carbon Nanofibers Composite as Efficient Anode Material for Li-Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2203
Author(s):  
Hong Wang ◽  
Yuejin Ma ◽  
Wenming Zhang
Keyword(s):  
Anode Materials ◽  
Electrochemical Reaction ◽  
Active Material ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Solvothermal Reaction ◽  
Li Ion Batteries ◽  
Li Ion ◽  
A Current

Nanoscale Fe3O4-Sn@CNFs was prepared by loading Fe3O4 and Sn nanoparticles onto CNFs synthesized via electrostatic spinning and subsequent thermal treatment by solvothermal reaction, and were used as anode materials for lithium-ion batteries. The prepared anode delivers an excellent reversible specific capacity of 1120 mAh·g−1 at a current density of 100 mA·g−1 at the 50th cycle. The recovery rate of the specific capacity (99%) proves the better cycle stability. Fe3O4 nanoparticles are uniformly dispersed on the surface of nanofibers with high density, effectively increasing the electrochemical reaction sites, and improving the electrochemical performance of the active material. The rate and cycling performance of the fabricated electrodes were significantly improved because of Sn and Fe3O4 loading on CNFs with high electrical conductivity and elasticity.

C–S@PANI composite with a polymer spherical network structure for high performance lithium–sulfur batteries

2016 ◽  
Vol 18 (1) ◽  
pp. 261-266 ◽  
Author(s):  
Junkai Wang ◽  
Kaiqiang Yue ◽  
Xiaodan Zhu ◽  
Kang L. Wang ◽  
Lianfeng Duan
Keyword(s):  
High Performance ◽  
Specific Capacity ◽  
3D Structure ◽  
Conductive Polymer ◽  
Cycling Performance ◽  
High Specific Capacity ◽  
Pani Composite ◽  
Lithium Sulfur Batteries ◽  
And Migration ◽  
Lithium Sulfur

C–S@PANI composite with conductive polymer spherical network was synthesized. Its 3D structure inhibits the dissolution and migration of polysulfides into electrolyte, delivering high specific capacity and a stable cycling performance.

scholarly journals Boron Nitride Nanotube-Based Separator for High-Performance Lithium-Sulfur Batteries

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 11
Author(s):  
Hong-Sik Kim ◽  
Hui-Ju Kang ◽  
Hongjin Lim ◽  
Hyun Jin Hwang ◽  
Jae-Woo Park ◽  
...  
Keyword(s):  
Boron Nitride ◽  
High Performance ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Boron Nitride Nanotube ◽  
Shuttle Effect ◽  
Metal Anode ◽  
Lithium Sulfur Batteries ◽  
The Difference ◽  
Lithium Sulfur

To prevent global warming, ESS development is in progress along with the development of electric vehicles and renewable energy. However, the state-of-the-art technology, i.e., lithium-ion batteries, has reached its limitation, and thus the need for high-performance batteries with improved energy and power density is increasing. Lithium-sulfur batteries (LSBs) are attracting enormous attention because of their high theoretical energy density. However, there are technical barriers to its commercialization such as the formation of dendrites on the anode and the shuttle effect of the cathode. To resolve these issues, a boron nitride nanotube (BNNT)-based separator is developed. The BNNT is physically purified so that the purified BNNT (p−BNNT) has a homogeneous pore structure because of random stacking and partial charge on the surface due to the difference of electronegativity between B and N. Compared to the conventional polypropylene (PP) separator, the p−BNNT loaded PP separator prevents the dendrite formation on the Li metal anode, facilitates the ion transfer through the separator, and alleviates the shuttle effect at the cathode. With these effects, the p−BNNT loaded PP separators enable the LSB cells to achieve a specific capacity of 1429 mAh/g, and long-term stability over 200 cycles.

Electrospun Li3V2(PO4)3 nanocubes/carbon nanofibers as free-standing cathodes for high-performance lithium-ion batteries

2019 ◽  
Vol 7 (24) ◽  
pp. 14681-14688 ◽  
Author(s):  
Yi Peng ◽  
Rou Tan ◽  
Jianmin Ma ◽  
Qiuhong Li ◽  
Taihong Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Carbon Nanofibers ◽  
High Performance ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Free Standing ◽  
High Specific Capacity ◽  
Electrospinning Method

A novel free-standing architecture with Li3V2(PO4)3 nanocubes embedded in N-doped carbon nanofibers has been successfully prepared through a facile ionic liquid-assisted electrospinning method, which exhibits an outstanding electrochemical performance including high specific capacity, stable cycling performance and superior rate capability.

Hierarchical NiCo2S4 hollow spheres as a high performance anode for lithium ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (103) ◽  
pp. 84711-84717 ◽  
Author(s):  
Rencheng Jin ◽  
Dongmei Liu ◽  
Chunping Liu ◽  
Gang Liu
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Specific Capacity ◽  
Hollow Spheres ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Performance ◽  
High Specific Capacity ◽  
Good Rate Capability

Hierarchical NiCo2S4 hollow spheres have been fabricated, which exhibit a high specific capacity, good rate capability and stable cycling performance.

scholarly journals TiO2 Hollow Spheres With Flower-Like SnO2 Shell as Anodes for Lithium-Ion Batteries

2021 ◽  
Vol 9 ◽  
Author(s):  
Ying Weng ◽  
Ziying Zhang ◽  
Huizhen Zhang ◽  
Yangyang Zhou ◽  
Xiaona Zhao ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Specific Capacity ◽  
Hollow Spheres ◽  
Lithium Ion ◽  
Mesoporous Structure ◽  
Cycling Performance ◽  
Commercial Application ◽  
Ion Migration ◽  
Current Densities ◽  
Tio2 Hollow Spheres

SnO2 is a promising anode material for lithium-ion batteries due to its high theoretical specific capacity and low operation voltage. However, its poor cycling performance hinders its commercial application. In order to improve the cycling stability of SnO2 electrodes, novel flower-like SnO2/TiO2 hollow spheres were prepared by facile hydrothermal method using carbon spheres as templates. Their flower-like shell and mesoporous structure highlighted a large specific surface area and excellent ion migration performance. Their TiO2 hollow sphere matrix and 2D SnO2 nano-flakes ensured good cycle stability. The electrochemical measurements indicated that novel flower-like SnO2/TiO2 hollow spheres delivered a high specific capacity, low irreversible capacity loss and superior rate performance. After 1,000 cycles at current densities of 200 mA g−1, the capacity of the flower-like SnO2/TiO2 hollow spheres was still maintained at 720 mAh g−1. Their rate capacity reached 486 mAh g−1 when the current densities gradually increase to 2,000 mA g−1.

Controlled Crystallization Synthesis of Porous FePO4·3H2O Micro-Spheres for Fabricating High Performance LiFePO4/C Cathode Materials

2011 ◽  
Vol 399-401 ◽  
pp. 1510-1514
Author(s):  
Wen Kui Zhang ◽  
Hui Juan Zeng ◽  
Yang Xia ◽  
Ling Chao Qian ◽  
Bin Zhao ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Cathode Materials ◽  
High Performance ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Crystallization Method ◽  
Initial Discharge ◽  
Controlled Crystallization

Amorphous porous FePO4·3H2O micro-spheres were synthesized via a controlled crystallization method. These micro-spheres have a particle size distribution from 10 to 28 μm. There are larger numbers of pores on the surface of FePO4·3H2O microspheres, which are important to synthesize high performance LiFePO4 cathode materials for the application of lithium ion battery. The electrochemical properties of the LiFePO4/C electrode, preparing by using the above porous spherical FePO4·3H2O particles, were measured. The electrochemical results show that the obtained LiFePO4/C has a high initial discharge specific capacity of 141.4 mAhg-1 and good cycling performance at 0.5 C. The microstructural and electrochemical analyses indicate that this porous spherical FePO4·3H2O is a fascinating precursor for preparing LiFePO4/C cathode materials.

A carob-inspired nanoscale design of yolk–shell Si@void@TiO2-CNF composite as anode material for high-performance lithium-ion batteries

2019 ◽  
Vol 48 (20) ◽  
pp. 6846-6852 ◽  
Author(s):  
Chenle Zhang ◽  
Jingbo Yang ◽  
Hongwei Mi ◽  
Yongliang Li ◽  
Peixin Zhang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Performance ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycling Performance ◽  
One Dimensional ◽  
The One

The one-dimensional yolk–shell structured Si@void@TiO2-CNF anode delivers improved specific capacity and cycling performance for lithium ion batteries.

scholarly journals Fabrication of GeS-graphene composites for electrode materials in lithium-ion batteries

2021 ◽  
Author(s):  
Chen Li ◽  
Xiaoyun Xu ◽  
Tingting Song ◽  
Xinyu Zhu ◽  
Yongtao Li ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Electrode Materials ◽  
Discharge Rate ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Battery Materials ◽  
Graphene Composite ◽  
Potential Electrode

Abstract The new electrode materials are critically important for the development of lithium-ion batteries (LIBs). Herein, we report the synthesis of GeS-graphene composite (GeS-G) by facile sonication which exhibits the excellent cycling performance for lithium-ion batteries. Under the condition of change-discharge rate of 50 mA·g-1 and voltage window of 0.005-3 V, the specific capacity of GeS-G is 170 mAh·g-1 after 100 cycles, which is significantly higher than that of pure GeS. The results of the present work imply that the nanostructure of GeS-G is the potential electrode materials for application in high-performance lithium-ion batteries and enrich the gene bank of lithium-ion battery materials.

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