Enhanced performance of yolk-shell structured Si-PPy composite as an anode for lithium ion batteries

Zhen Liu; Yuwen Luo; Mingjiong Zhou; Wenqin Wang; Ning Gan; Shigeto Okada; Jun Ichi Yamaki

doi:10.5796/electrochemistry.83.1067

Enhanced performance of yolk-shell structured Si-PPy composite as an anode for lithium ion batteries

Zhen Liu, Yuwen Luo, Mingjiong Zhou, Wenqin Wang, Ning Gan, Shigeto Okada, Jun Ichi Yamaki

Department of Advanced Device Materials

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

6 Citations (Scopus)

Abstract

Yolk-shell structured silicon-polypyrrole (Si-PPy) composite has been prepared by an in situ chemical polymerization approach. The designed parcel method significantly improves the cycling stability and rate capability compared to those of bare silicon. The Si-PPy composite exhibits a high specific capacity of 1400mAhg^-1 after 100 cycles, which is approximately 4 times higher than bare Si. Moreover, the Si-PPy composite delivers a high reversible capacity of ∼1200mAhg^-1 at a high current density of 10Ag^-1, while the bare Si only achieves a low capacity of ∼490mAhg^-1 at the same current density. The outstanding electrochemical properties of the Si-PPy composites are attributed to the stability and conductivity of the PPy shell and the nanoscale structure of the composite.

Original language	English
Pages (from-to)	1067-1070
Number of pages	4
Journal	Electrochemistry
Volume	83
Issue number	12
DOIs	https://doi.org/10.5796/electrochemistry.83.1067
Publication status	Published - 2015

All Science Journal Classification (ASJC) codes

Electrochemistry

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.5796/electrochemistry.83.1067

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abstract = "Yolk-shell structured silicon-polypyrrole (Si-PPy) composite has been prepared by an in situ chemical polymerization approach. The designed parcel method significantly improves the cycling stability and rate capability compared to those of bare silicon. The Si-PPy composite exhibits a high specific capacity of 1400mAhg-1 after 100 cycles, which is approximately 4 times higher than bare Si. Moreover, the Si-PPy composite delivers a high reversible capacity of ∼1200mAhg-1 at a high current density of 10Ag-1, while the bare Si only achieves a low capacity of ∼490mAhg-1 at the same current density. The outstanding electrochemical properties of the Si-PPy composites are attributed to the stability and conductivity of the PPy shell and the nanoscale structure of the composite.",

author = "Zhen Liu and Yuwen Luo and Mingjiong Zhou and Wenqin Wang and Ning Gan and Shigeto Okada and Yamaki, {Jun Ichi}",

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T1 - Enhanced performance of yolk-shell structured Si-PPy composite as an anode for lithium ion batteries

AU - Liu, Zhen

AU - Luo, Yuwen

AU - Zhou, Mingjiong

AU - Wang, Wenqin

AU - Gan, Ning

AU - Okada, Shigeto

AU - Yamaki, Jun Ichi

PY - 2015

Y1 - 2015

N2 - Yolk-shell structured silicon-polypyrrole (Si-PPy) composite has been prepared by an in situ chemical polymerization approach. The designed parcel method significantly improves the cycling stability and rate capability compared to those of bare silicon. The Si-PPy composite exhibits a high specific capacity of 1400mAhg-1 after 100 cycles, which is approximately 4 times higher than bare Si. Moreover, the Si-PPy composite delivers a high reversible capacity of ∼1200mAhg-1 at a high current density of 10Ag-1, while the bare Si only achieves a low capacity of ∼490mAhg-1 at the same current density. The outstanding electrochemical properties of the Si-PPy composites are attributed to the stability and conductivity of the PPy shell and the nanoscale structure of the composite.

AB - Yolk-shell structured silicon-polypyrrole (Si-PPy) composite has been prepared by an in situ chemical polymerization approach. The designed parcel method significantly improves the cycling stability and rate capability compared to those of bare silicon. The Si-PPy composite exhibits a high specific capacity of 1400mAhg-1 after 100 cycles, which is approximately 4 times higher than bare Si. Moreover, the Si-PPy composite delivers a high reversible capacity of ∼1200mAhg-1 at a high current density of 10Ag-1, while the bare Si only achieves a low capacity of ∼490mAhg-1 at the same current density. The outstanding electrochemical properties of the Si-PPy composites are attributed to the stability and conductivity of the PPy shell and the nanoscale structure of the composite.

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Enhanced performance of yolk-shell structured Si-PPy composite as an anode for lithium ion batteries

Abstract

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