Study on Composite of Porous Si and Disordered Carbon as Anode Materials for Lithium Ion Batteries

Silicon and related materials have recently received considerable attention as potential anodes in Li-ion batteries for their high theoretical speciﬁc capacities. To overcome the problem of volume change , composites comprising porous silicon, disordered carbon (DC) have been prepared by pyrolyzing the critic acid. This composite anode material showed a discharge capacity of 1390 mAh/g in the first cycle, and the initial columbic efficiency is 70%. After 20 cycles, the discharge capacity of the material is 511 mAh/g. The improved stability of this material is hypothesized to depend on the unique structure of porous Si and the coated DC. The morphologies of the composites were systematically investigated by the X-ray diffraction and scanning electron microscopy. It can be observed that porous Si particles were embedded into the matrix of the DC. The capacity and cycling stability of the composites were systematically evaluated by electrochemical charge/discharge tests.

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Electrochemical Performance of SiO/C Composites as Anode Material for Li-Ion Batteries

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1092-1093.185 ◽

2015 ◽

Vol 1092-1093 ◽

pp. 185-190 ◽

Cited By ~ 2

Author(s):

Jing Wang ◽

Mei Juan Zhou ◽

Feng Wu ◽

Shi Chen

Keyword(s):

Discharge Capacity ◽

Coulombic Efficiency ◽

Weight Ratio ◽

Heat Treating ◽

Li Ion Batteries ◽

X Ray Diffraction ◽

Galvanostatic Discharge ◽

Improved Stability ◽

Li Ion ◽

Initial Coulombic Efficiency

Dopamine was used as the carbon precursor to prepare SiO/C composite. Dopamine achieved self-polymerization and covered on the surface of the SiO particles in Tris-buffer, and the SiO/C composites were gained after heat-treating in the tube furnace under Argon. X-ray diffraction ( XRD ) , scanning electron microscope ( SEM ) were used to determine the phases obtained and to observe the morphologies of the composite. The galvanostatic discharge/charge test was carried out to characterize the electrochemical properties of the composite. When the sample of the mixed SiO and dopamine at a weight ratio of 1 : 3, the composite showed the best cycle ability with the discharge capacity of 1362 mAh g−1 in the first cycle, and the initial coulombic efficiency is 55.6%, after 50 cycles, the discharge capacity is 442 mAh g−1. The improved stability of the composite is attributed to carbon-coating forming during heat-treatment process.

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Preparation and Characterization of Tin/Carbon Composites for Lithium-Ion Cells

MRS Proceedings ◽

10.1557/proc-730-v1.11 ◽

2002 ◽

Vol 730 ◽

Author(s):

Ronald A. Guidotti ◽

David J. Irvin ◽

William R. Even ◽

Karl Gross

Keyword(s):

Anode Materials ◽

Electroless Deposition ◽

Ethylene Carbonate ◽

Lithium Ion ◽

X Ray Diffraction ◽

Lithium Ion Cells ◽

Disordered Carbon ◽

Li Ion ◽

Organic Precursors

AbstractA number of Sn/C composites were prepared for evaluation as anode materials for Li-ion cells. In one case, samples were prepared by incorporation of Sn species into organic precursors that were then pyrolyzed under an Ar/H2 cover gas to prepare the Sn/C composites. They were also prepared by decoration of various types of carbon with nanoparticles of Sn by electroless deposition using hydrazine. The carbons examined included a disordered carbon prepared in house from poly(methacrylonitrile), a mesocarbon microbead (MCMB) carbon, and a platelet graphite. The Sn/C composites were examined by x-ray diffraction (XRD) and scanning electron microscopy (SEM) and were also analyzed for Sn content. They were then tested as anodes in three-electrode cells against Li metal using 1M LiPF6 in ethylene carbonate (EC)/dimethyl carbonate (DMC) solution. The best overall electrochemical performance was obtained with a Sn/C composite made by electroless deposition of 10% Sn onto platelet graphite.

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Three-Dimensional Porous Si and SiO2 with In Situ Decorated Carbon Nanotubes As Anode Materials for Li-ion Batteries

ACS Applied Materials & Interfaces ◽

10.1021/acsami.6b16644 ◽

2017 ◽

Vol 9 (21) ◽

pp. 17807-17813 ◽

Cited By ~ 38

Author(s):

Junming Su ◽

Jiayue Zhao ◽

Liangyu Li ◽

Congcong Zhang ◽

Chunguang Chen ◽

...

Keyword(s):

Carbon Nanotubes ◽

Anode Materials ◽

Three Dimensional ◽

Li Ion Batteries ◽

Porous Si ◽

Li Ion

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Metal–organic nanofibers as anodes for lithium-ion batteries

RSC Advances ◽

10.1039/c4ra16416d ◽

2015 ◽

Vol 5 (26) ◽

pp. 20386-20389 ◽

Cited By ~ 34

Author(s):

Chongchong Zhao ◽

Cai Shen ◽

Weiqiang Han

Keyword(s):

Amino Acid ◽

Lithium Ion Batteries ◽

Anode Materials ◽

Lithium Ion ◽

Copper Nitrate ◽

Li Ion Batteries ◽

Metal Organic ◽

Li Ion

Metal organic nanofibers (MONFs) synthesized from precursors of amino acid and copper nitrate were applied as anode materials for Li-ion batteries.

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Three-Dimensional Porous Si with in Situ Decorated Carbon Nanotubes As Anode Materials for Li-Ion Batteries

ECS Meeting Abstracts ◽

10.1149/ma2019-04/1/15 ◽

2019 ◽

Keyword(s):

Carbon Nanotubes ◽

Anode Materials ◽

Three Dimensional ◽

Li Ion Batteries ◽

Porous Si ◽

Li Ion

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MOF-derived hollow Co4S3/C nanosheet arrays grown on carbon cloth as the anode for high-performance Li-ion batteries

Dalton Transactions ◽

10.1039/d0dt03070h ◽

2020 ◽

Vol 49 (40) ◽

pp. 14115-14122

Author(s):

Mingchen Shi ◽

Qiang Wang ◽

Junwei Hao ◽

Huihua Min ◽

Hairui You ◽

...

Keyword(s):

Anode Materials ◽

High Performance ◽

Specific Capacity ◽

Lithium Ion ◽

Cobalt Sulfide ◽

Carbon Cloth ◽

Li Ion Batteries ◽

High Specific Capacity ◽

Nanosheet Arrays ◽

Li Ion

Cobalt sulfide (Co4S3) is considered as one of the most promising anode materials for lithium-ion batteries owing to its high specific capacity.

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A novel anode comprised of C&N co-doped Co3O4 hollow nanofibres with excellent performance for lithium-ion batteries

Physical Chemistry Chemical Physics ◽

10.1039/c6cp02660e ◽

2016 ◽

Vol 18 (29) ◽

pp. 19531-19535 ◽

Cited By ~ 18

Author(s):

Chunshuang Yan ◽

Gang Chen ◽

Jingxue Sun ◽

Xin Zhou ◽

Chade Lv

Keyword(s):

Anode Materials ◽

Lithium Ion ◽

Reversible Capacity ◽

Li Ion Batteries ◽

Excellent Performance ◽

Electrospinning Technique ◽

High Reversible Capacity ◽

Li Ion ◽

Excellent Cycling Stability ◽

Co Doped

C&N co-doped Co3O4 hollow nanofibres are prepared by combining the electrospinning technique and the hydrothermal method, which show a high reversible capacity and excellent cycling stability as anode materials for Li-ion batteries.

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

Nanomaterials ◽

10.3390/nano11092203 ◽

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.

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