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Mechanical and electrical changes in electrochemically active polyimide binders for Li-ion batteries

Journal Article · · Journal of Materials Chemistry. A
DOI:https://doi.org/10.1039/d4ta06671e· OSTI ID:2500793
 [1];  [2];  [3];  [3];  [2];  [4];  [5]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States); Colorado School of Mines, Golden, CO (United States)
  2. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
  3. Argonne National Laboratory (ANL), Argonne, IL (United States)
  4. Colorado School of Mines, Golden, CO (United States)
  5. National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Polyimide binders are often used in electrodes made with silicon for lithium-ion batteries for their mechanical strength and adhesion, which help mitigate mechanical issues associated with large volumetric expansion. These binders can be electrochemically active, but it is difficult to characterize what physical and chemical changes occur due to a composite electrode with multiple components and processes at play. Here, in this work, we study electrodes consisting only of polyimide binder and conductive carbon, using scanning probe-based techniques—contact resonance, force volume, and scanning spreading resistance microscopy—along with cryo-scanning transmission electron microscopy, electron energy loss spectroscopy, and energy dispersive X-ray spectroscopy. We show that lithium becomes trapped in the binder during cycling and results in large initial capacity losses, the formation of dendrite-like features, column-like domains of significantly increased mechanical modulus, and a slight increase in electronic resistivity.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
2500793
Report Number(s):
NREL/JA-5K00-89008; MainId:89787; UUID:6ad7d750-874c-44ec-b730-e22b83c5d1e5; MainAdminId:75606
Journal Information:
Journal of Materials Chemistry. A, Vol. 13, Issue 3; ISSN 2050-7488
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (29)

Impacts of Curing-Induced Phase Segregation in Silicon Nanoparticle-Based Electrodes journal September 2024
Intrinsic Properties of Individual Inorganic Silicon–Electrolyte Interphase Constituents journal November 2019
Reversible Cycling of Crystalline Silicon Powder journal January 2007
Three-dimensional electronic resistivity mapping of solid electrolyte interphase on Si anode materials journal January 2019
Quantitative measurements of indentation moduli by atomic force acoustic microscopy using a dual reference method journal October 2006
Consequences of utilizing a redox-active polymeric binder in Li-ion batteries journal November 2023
Silicon-Based Anodes for Lithium-Ion Batteries: From Fundamentals to Practical Applications journal January 2018
Eco-Friendly Water-Processable Polyimide Binders with High Adhesion to Silicon Anodes for Lithium-Ion Batteries journal November 2021
Polyimides as Promising Materials for Lithium-Ion Batteries: A Review journal May 2023
Three-Dimensional Mapping of Resistivity and Microstructure of Composite Electrodes for Lithium-Ion Batteries journal October 2020
Multi-modal characterization methods of solid-electrolyte interphase in silicon-graphite composite electrodes journal April 2023
Effect of polyimide binder on electrochemical characteristics of surface-modified silicon anode for lithium ion batteries journal December 2013
Pushing Up Lithium Storage through Nanostructured Polyazaacene Analogues as Anode journal May 2015
Phenolic Resin as an Inexpensive High Performance Binder for Li-Ion Battery Alloy Negative Electrodes journal January 2016
A Polythiophene Material Featuring a Conjugated Carbonyl Side Group as an Anode for Lithium‐Ion Batteries journal July 2022
An air-stable and waterproof lithium metal anode enabled by wax composite packaging journal July 2019
Contact resonance force microscopy for nanomechanical characterization: Accuracy and sensitivity journal August 2013
Stress and Strain in Silicon Electrode Models journal January 2015
Mapping the elastic properties of granular Au films by contact resonance atomic force microscopy journal May 2008
The Electrochemical Behavior of Polyimide Binders in Li and Na Cells journal December 2015
Polyimide Binder: A Facile Way to Improve Safety of Lithium Ion Batteries journal January 2016
Improving the Cycling Performance of Lithium-Ion Battery Si/Graphite Anodes Using a Soluble Polyimide Binder journal November 2017
Semiconducting and Metallic Polymers:  The Fourth Generation of Polymeric Materials journal September 2001
Ionic Conduction in Lithium Ion Battery Composite Electrode Governs Cross-sectional Reaction Distribution journal May 2016
Electropolymerization Triggered in Situ Surface Modification of Electrode Interphases: Alleviating First-Cycle Lithium Loss in Silicon Anode Lithium-Ion Batteries journal August 2020
Transport and Charge Carrier Chemistry in Lithium Oxide journal January 2019
The mechanical properties of three types of carbon allotropes journal February 2013
Highly Adhesive and Soluble Copolyimide Binder: Improving the Long-Term Cycle Life of Silicon Anodes in Lithium-Ion Batteries journal June 2015
Quantitative subsurface contact resonance force microscopy of model polymer nanocomposites journal March 2011