Improved rate capability of Si-C composite anodes by boron doping for lithium-ion batteries

Ran Yi; Jiantao Zai; Fang Dai; Mikhail L. Gordin; Donghai Wang

doi:10.1016/j.elecom.2013.09.004

Improved rate capability of Si-C composite anodes by boron doping for lithium-ion batteries

Ran Yi, Jiantao Zai, Fang Dai, Mikhail L. Gordin, Donghai Wang

Research output: Contribution to journal › Article › peer-review

75 Scopus citations

Abstract

We report a novel strategy to enhance the rate capability of Si-C composite by facile boron doping. Boron doping was confirmed by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The boron-doped Si-C composite shows much improved rate capability, delivering a capacity of 575 mAh/g at 6.4 A/g without any external carbon additive, 80% higher than that of undoped composite. Electrochemical impedance spectroscopy (EIS) measurement shows that boron-doped Si-C composite has lower charge transfer resistance, which helps improve its rate capability.

Original language	English (US)
Pages (from-to)	29-32
Number of pages	4
Journal	Electrochemistry Communications
Volume	36
DOIs	https://doi.org/10.1016/j.elecom.2013.09.004
State	Published - 2013

All Science Journal Classification (ASJC) codes

Electrochemistry

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10.1016/j.elecom.2013.09.004

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title = "Improved rate capability of Si-C composite anodes by boron doping for lithium-ion batteries",

abstract = "We report a novel strategy to enhance the rate capability of Si-C composite by facile boron doping. Boron doping was confirmed by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The boron-doped Si-C composite shows much improved rate capability, delivering a capacity of 575 mAh/g at 6.4 A/g without any external carbon additive, 80% higher than that of undoped composite. Electrochemical impedance spectroscopy (EIS) measurement shows that boron-doped Si-C composite has lower charge transfer resistance, which helps improve its rate capability.",

author = "Ran Yi and Jiantao Zai and Fang Dai and Gordin, {Mikhail L.} and Donghai Wang",

note = "Funding Information: This work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 , Subcontract NO. 6951378 under the Batteries for Advanced Transportation Technologies (BATT) Program.",

year = "2013",

doi = "10.1016/j.elecom.2013.09.004",

language = "English (US)",

volume = "36",

pages = "29--32",

journal = "Electrochemistry Communications",

issn = "1388-2481",

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T1 - Improved rate capability of Si-C composite anodes by boron doping for lithium-ion batteries

AU - Yi, Ran

AU - Zai, Jiantao

AU - Dai, Fang

AU - Gordin, Mikhail L.

AU - Wang, Donghai

N1 - Funding Information: This work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 , Subcontract NO. 6951378 under the Batteries for Advanced Transportation Technologies (BATT) Program.

PY - 2013

Y1 - 2013

N2 - We report a novel strategy to enhance the rate capability of Si-C composite by facile boron doping. Boron doping was confirmed by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The boron-doped Si-C composite shows much improved rate capability, delivering a capacity of 575 mAh/g at 6.4 A/g without any external carbon additive, 80% higher than that of undoped composite. Electrochemical impedance spectroscopy (EIS) measurement shows that boron-doped Si-C composite has lower charge transfer resistance, which helps improve its rate capability.

AB - We report a novel strategy to enhance the rate capability of Si-C composite by facile boron doping. Boron doping was confirmed by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The boron-doped Si-C composite shows much improved rate capability, delivering a capacity of 575 mAh/g at 6.4 A/g without any external carbon additive, 80% higher than that of undoped composite. Electrochemical impedance spectroscopy (EIS) measurement shows that boron-doped Si-C composite has lower charge transfer resistance, which helps improve its rate capability.

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M3 - Article

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SN - 1388-2481

VL - 36

SP - 29

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JO - Electrochemistry Communications

JF - Electrochemistry Communications

ER -

Improved rate capability of Si-C composite anodes by boron doping for lithium-ion batteries

Abstract

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