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Title: Rational Design of a Multifunctional Binder for High-Capacity Silicon-Based Anodes

Abstract

Although several principles have been recognized to fabricate a nominal "better" binder, there continues to be a lack of a rational design and synthesis approach that would meet the robust criteria required for silicon (Si) anodes. Herein, we report a synthetic polymer binder, i.e., catechol-functionalized chitosan cross-linked by glutaraldehyde (CS-CG+GA), that serves dual functionalities: (a) wetness-resistant adhesion capability via catechol grafting and (b) mechanical robustness via in situ formation of a three-dimensional (3D) network. A SiNP-based anode with a designed functional polymer network (CS-CG10%+6%GA) exhibits a capacity retention of 91.5% after 100 cycles (2144 +/- 14 mAh/g). Properties that are traditionally considered to be advantageous, including stronger adhesion strength and higher mechanical robustness, do not always improve the binder performance. A clear relationship between these properties and ultimate electrochemical performance is established by assessing the rheological behavior, mechanical property, adhesion force, peel stress, morphology evolution, and semiquantitative evaluation. This study provides a clear path for the rational design of high-performance functional polymer binders for not only Si-based electrodes but also other types of alloy and conversion-based electrodes.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Vehicle Technologies (VTO); National Science Foundation (NSF); USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
OSTI Identifier:
1530380
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
ACS Energy Letters
Additional Journal Information:
Journal Volume: 4; Journal Issue: 5
Country of Publication:
United States
Language:
English

Citation Formats

Cao, Peng-Fei, Yang, Guang, Li, Bingrui, Zhang, Yiman, Zhao, Sheng, Zhang, Shuo, Erwin, Andrew, Zhang, Zhengcheng, Sokolov, Alexei P., Nanda, Jagjit, and Saito, Tomonori. Rational Design of a Multifunctional Binder for High-Capacity Silicon-Based Anodes. United States: N. p., 2019. Web. doi:10.1021/acsenergylett.9b00815.
Cao, Peng-Fei, Yang, Guang, Li, Bingrui, Zhang, Yiman, Zhao, Sheng, Zhang, Shuo, Erwin, Andrew, Zhang, Zhengcheng, Sokolov, Alexei P., Nanda, Jagjit, & Saito, Tomonori. Rational Design of a Multifunctional Binder for High-Capacity Silicon-Based Anodes. United States. doi:10.1021/acsenergylett.9b00815.
Cao, Peng-Fei, Yang, Guang, Li, Bingrui, Zhang, Yiman, Zhao, Sheng, Zhang, Shuo, Erwin, Andrew, Zhang, Zhengcheng, Sokolov, Alexei P., Nanda, Jagjit, and Saito, Tomonori. Wed . "Rational Design of a Multifunctional Binder for High-Capacity Silicon-Based Anodes". United States. doi:10.1021/acsenergylett.9b00815.
@article{osti_1530380,
title = {Rational Design of a Multifunctional Binder for High-Capacity Silicon-Based Anodes},
author = {Cao, Peng-Fei and Yang, Guang and Li, Bingrui and Zhang, Yiman and Zhao, Sheng and Zhang, Shuo and Erwin, Andrew and Zhang, Zhengcheng and Sokolov, Alexei P. and Nanda, Jagjit and Saito, Tomonori},
abstractNote = {Although several principles have been recognized to fabricate a nominal "better" binder, there continues to be a lack of a rational design and synthesis approach that would meet the robust criteria required for silicon (Si) anodes. Herein, we report a synthetic polymer binder, i.e., catechol-functionalized chitosan cross-linked by glutaraldehyde (CS-CG+GA), that serves dual functionalities: (a) wetness-resistant adhesion capability via catechol grafting and (b) mechanical robustness via in situ formation of a three-dimensional (3D) network. A SiNP-based anode with a designed functional polymer network (CS-CG10%+6%GA) exhibits a capacity retention of 91.5% after 100 cycles (2144 +/- 14 mAh/g). Properties that are traditionally considered to be advantageous, including stronger adhesion strength and higher mechanical robustness, do not always improve the binder performance. A clear relationship between these properties and ultimate electrochemical performance is established by assessing the rheological behavior, mechanical property, adhesion force, peel stress, morphology evolution, and semiquantitative evaluation. This study provides a clear path for the rational design of high-performance functional polymer binders for not only Si-based electrodes but also other types of alloy and conversion-based electrodes.},
doi = {10.1021/acsenergylett.9b00815},
journal = {ACS Energy Letters},
number = 5,
volume = 4,
place = {United States},
year = {2019},
month = {5}
}