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Title: Mussel-Inspired Conductive Polymer Binder for Si-Alloy Anode in Lithium-Ion Batteries

Abstract

The excessive volume changes during cell cycling of Si-based anode in lithium ion batteries impeded its application. One major reason for the cell failure is particle isolation during volume shrinkage in delithiation process, which makes strong adhesion between polymer binder and anode active material particles a highly desirable property. Here, a biomimetic side-chain conductive polymer incorporating catechol, a key adhesive component of the mussel holdfast protein, was synthesized. Atomic force microscopy-based single-molecule force measurements of mussel-inspired conductive polymer binder contacting a silica surface revealed a similar adhesion toward substrate when compared with an effective Si anode binder, homo-poly(acrylic acid), with the added benefit of being electronically conductive. Electrochemical experiments showed a very stable cycling of Si-alloy anodes realized via this biomimetic conducting polymer binder, leading to a high loading Si anode with a good rate performance. We attribute the ability of the Si-based anode to tolerate the volume changes during cycling to the excellent mechanical integrity afforded by the strong interfacial adhesion of the biomimetic conducting polymer.

Authors:
ORCiD logo [1];  [2];  [1];  [1]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States); National Taipei Univ. of Technology (Taiwan)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1426750
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 10; Journal Issue: 6; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Zhao, Hui, Wei, Yang, Wang, Cheng, Qiao, Ruimin, Yang, Wanli, Messersmith, Phillip B., and Liu, Gao. Mussel-Inspired Conductive Polymer Binder for Si-Alloy Anode in Lithium-Ion Batteries. United States: N. p., 2018. Web. doi:10.1021/acsami.7b14645.
Zhao, Hui, Wei, Yang, Wang, Cheng, Qiao, Ruimin, Yang, Wanli, Messersmith, Phillip B., & Liu, Gao. Mussel-Inspired Conductive Polymer Binder for Si-Alloy Anode in Lithium-Ion Batteries. United States. doi:10.1021/acsami.7b14645.
Zhao, Hui, Wei, Yang, Wang, Cheng, Qiao, Ruimin, Yang, Wanli, Messersmith, Phillip B., and Liu, Gao. Mon . "Mussel-Inspired Conductive Polymer Binder for Si-Alloy Anode in Lithium-Ion Batteries". United States. doi:10.1021/acsami.7b14645. https://www.osti.gov/servlets/purl/1426750.
@article{osti_1426750,
title = {Mussel-Inspired Conductive Polymer Binder for Si-Alloy Anode in Lithium-Ion Batteries},
author = {Zhao, Hui and Wei, Yang and Wang, Cheng and Qiao, Ruimin and Yang, Wanli and Messersmith, Phillip B. and Liu, Gao},
abstractNote = {The excessive volume changes during cell cycling of Si-based anode in lithium ion batteries impeded its application. One major reason for the cell failure is particle isolation during volume shrinkage in delithiation process, which makes strong adhesion between polymer binder and anode active material particles a highly desirable property. Here, a biomimetic side-chain conductive polymer incorporating catechol, a key adhesive component of the mussel holdfast protein, was synthesized. Atomic force microscopy-based single-molecule force measurements of mussel-inspired conductive polymer binder contacting a silica surface revealed a similar adhesion toward substrate when compared with an effective Si anode binder, homo-poly(acrylic acid), with the added benefit of being electronically conductive. Electrochemical experiments showed a very stable cycling of Si-alloy anodes realized via this biomimetic conducting polymer binder, leading to a high loading Si anode with a good rate performance. We attribute the ability of the Si-based anode to tolerate the volume changes during cycling to the excellent mechanical integrity afforded by the strong interfacial adhesion of the biomimetic conducting polymer.},
doi = {10.1021/acsami.7b14645},
journal = {ACS Applied Materials and Interfaces},
issn = {1944-8244},
number = 6,
volume = 10,
place = {United States},
year = {2018},
month = {1}
}

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