Volume 44, Issue 13 pp. 10168-10178
RESEARCH ARTICLE

Toward high performance solid-state lithium-ion battery with a promising PEO/PPC blend solid polymer electrolyte

Lin Zhu

Corresponding Author

Lin Zhu

Research School of Polymeric Materials, School of Materials Science & Engineering, Jiangsu University, Zhenjiang, P. R. China

Correspondence

Lin Zhu and Songjun Li, Research School of Polymeric Materials, School of Materials Science & Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, P. R. China.

Email: [email protected] (L. Z.) and Email: [email protected] (S. L.)

Xiangqian Shen, Research School of Advanced Materials, School of Materials Science & Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, P. R. China.

Email: [email protected] (X. S.)

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Jialun Li

Jialun Li

Research School of Polymeric Materials, School of Materials Science & Engineering, Jiangsu University, Zhenjiang, P. R. China

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Yufei Jia

Yufei Jia

Research School of Polymeric Materials, School of Materials Science & Engineering, Jiangsu University, Zhenjiang, P. R. China

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Penghui Zhu

Penghui Zhu

Research School of Polymeric Materials, School of Materials Science & Engineering, Jiangsu University, Zhenjiang, P. R. China

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Maoxiang Jing

Maoxiang Jing

Research School of Advanced Materials, School of Materials Science & Engineering, Jiangsu University, Zhenjiang, P. R. China

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Shanshan Yao

Shanshan Yao

Research School of Advanced Materials, School of Materials Science & Engineering, Jiangsu University, Zhenjiang, P. R. China

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Xiangqian Shen

Corresponding Author

Xiangqian Shen

Research School of Advanced Materials, School of Materials Science & Engineering, Jiangsu University, Zhenjiang, P. R. China

Correspondence

Lin Zhu and Songjun Li, Research School of Polymeric Materials, School of Materials Science & Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, P. R. China.

Email: [email protected] (L. Z.) and Email: [email protected] (S. L.)

Xiangqian Shen, Research School of Advanced Materials, School of Materials Science & Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, P. R. China.

Email: [email protected] (X. S.)

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Songjun Li

Corresponding Author

Songjun Li

Research School of Polymeric Materials, School of Materials Science & Engineering, Jiangsu University, Zhenjiang, P. R. China

Correspondence

Lin Zhu and Songjun Li, Research School of Polymeric Materials, School of Materials Science & Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, P. R. China.

Email: [email protected] (L. Z.) and Email: [email protected] (S. L.)

Xiangqian Shen, Research School of Advanced Materials, School of Materials Science & Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, P. R. China.

Email: [email protected] (X. S.)

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Feiyue Tu

Feiyue Tu

Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha, P. R. China

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First published: 16 July 2020
Citations: 68

Funding information: National Natural Science Foundation of China, Grant/Award Number: 51874146; Technical Innovation Project of Changsha Mining and Metallurgical Institute of China Minmetals Co., Ltd, Grant/Award Number: 20190590

Summary

A promising solid polymer blend electrolyte is prepared by blending of poly(ethylene oxide) (PEO) with different content of amorphous poly(propylene carbonate) (PPC), in which the amorphous property of PPC is utilized to enhance the amorphous/free phase of solid polymer electrolyte, so as to achieve the purpose of modifying PEO-based solid polymer electrolyte. It indicates that the blending of PEO with PPC can effectively reduce the crystallization and increase the ion conductivity and electrochemical stability window of solid polymer electrolyte. When the content of PPC reaches 50%, the ionic conductivity reaches the maximum, which is 2.04 × 10−5 S cm−1 and 2.82 × 10−4 S cm−1 at 25°C and 60°C, respectively. The electrochemical stability window increases from 4.25 to 4.9 V and the interfacial stability of lithium metal anode is also greatly improved. The solid-state LiFePO4//Li battery with the PEO/50%PPC blend solid polymer electrolyte has good cycling stability, which the maximum discharge specific capacity is up to 125 mAh g−1 at a charge/discharge current density of 0.5 C at 60°C.

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