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Title: Interweaving 3D Network Binder for High-Areal-Capacity Si Anode through Combined Hard and Soft Polymers

Abstract

We report that Si anodes suffer an inherent volume expansion problem. The consensus is that hydrogen bonds in these anodes are preferentially constructed between the binder and Si powder for enhanced adhesion and thus can improve cycling performance. There has been little research done in the field of understanding the contribution of the binder's mechanical properties to performance. Herein, a simple but effective strategy is proposed, combining hard/soft polymer systems, to exploit a robust binder with a 3D interpenetrating binding network (3D-IBN) via an in situ polymerization. The 3D-IBN structure is constructed by interweaving a hard poly(furfuryl alcohol) as the skeleton with a soft polyvinyl alcohol (PVA) as the filler, buffering the dramatic volume change of the Si anode. The resulting Si anode delivers an areal capacity of >10 mAh cm -2 and enables an energy density of >300 Wh kg -1 in a full lithium-ion battery (LIB) cell. The component of the interweaving binder can be switched to other polymers, such as replacing PVA by thermoplastic polyurethane and styrene butadiene styrene. Such a strategy is also effective for other high-capacity electroactive materials, e.g., Fe 2O 3 and Sn. In conclusion, this finding offers an alternative approach in designing high-areal-capacitymore » electrodes through combined hard and soft polymer binders for high-energy-density LIBs.« less

Authors:
 [1];  [2];  [2];  [3];  [4]; ORCiD logo [5]
  1. Guangdong University of Technology, Guangzhou (China); Griffith University, QLD (Australia)
  2. Queensland University of Technology(QUT), Brisbane, QLD (Australia)
  3. Griffith University, QLD (Australia)
  4. Guangdong University of Technology, Guangzhou (China)
  5. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); National Natural Science Foundation of China (NNSFC); Australian Research Council
OSTI Identifier:
1529547
Alternate Identifier(s):
OSTI ID: 1483704
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Energy Materials
Additional Journal Information:
Journal Volume: 9; Journal Issue: 3; Journal ID: ISSN 1614-6832
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 3D network binders; Si anodes; hard and soft polymers; high areal capacity; lithium-ion batteries

Citation Formats

Liu, Tiefeng, Chu, Qiaoling, Yan, Cheng, Zhang, Shanqing, Lin, Zhan, and Lu, Jun. Interweaving 3D Network Binder for High-Areal-Capacity Si Anode through Combined Hard and Soft Polymers. United States: N. p., 2018. Web. doi:10.1002/aenm.201802645.
Liu, Tiefeng, Chu, Qiaoling, Yan, Cheng, Zhang, Shanqing, Lin, Zhan, & Lu, Jun. Interweaving 3D Network Binder for High-Areal-Capacity Si Anode through Combined Hard and Soft Polymers. United States. doi:10.1002/aenm.201802645.
Liu, Tiefeng, Chu, Qiaoling, Yan, Cheng, Zhang, Shanqing, Lin, Zhan, and Lu, Jun. Wed . "Interweaving 3D Network Binder for High-Areal-Capacity Si Anode through Combined Hard and Soft Polymers". United States. doi:10.1002/aenm.201802645.
@article{osti_1529547,
title = {Interweaving 3D Network Binder for High-Areal-Capacity Si Anode through Combined Hard and Soft Polymers},
author = {Liu, Tiefeng and Chu, Qiaoling and Yan, Cheng and Zhang, Shanqing and Lin, Zhan and Lu, Jun},
abstractNote = {We report that Si anodes suffer an inherent volume expansion problem. The consensus is that hydrogen bonds in these anodes are preferentially constructed between the binder and Si powder for enhanced adhesion and thus can improve cycling performance. There has been little research done in the field of understanding the contribution of the binder's mechanical properties to performance. Herein, a simple but effective strategy is proposed, combining hard/soft polymer systems, to exploit a robust binder with a 3D interpenetrating binding network (3D-IBN) via an in situ polymerization. The 3D-IBN structure is constructed by interweaving a hard poly(furfuryl alcohol) as the skeleton with a soft polyvinyl alcohol (PVA) as the filler, buffering the dramatic volume change of the Si anode. The resulting Si anode delivers an areal capacity of >10 mAh cm-2 and enables an energy density of >300 Wh kg-1 in a full lithium-ion battery (LIB) cell. The component of the interweaving binder can be switched to other polymers, such as replacing PVA by thermoplastic polyurethane and styrene butadiene styrene. Such a strategy is also effective for other high-capacity electroactive materials, e.g., Fe2O3 and Sn. In conclusion, this finding offers an alternative approach in designing high-areal-capacity electrodes through combined hard and soft polymer binders for high-energy-density LIBs.},
doi = {10.1002/aenm.201802645},
journal = {Advanced Energy Materials},
number = 3,
volume = 9,
place = {United States},
year = {2018},
month = {11}
}

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