|
1
|
Baek SW, Salamat CZ, Elizalde-Segovia R, Das P, Frajnkovič M, Zhou Y, Thompson BC, Narayan SR, Tolbert SH, Pilon L. Measuring Heat Dissipation and Entropic Potential in Battery Cathodes Made with Conjugated and Conventional Polymer Binders Using Operando Calorimetry. ACS APPLIED POLYMER MATERIALS 2024; 6:4954-4963. [PMID: 38752015 PMCID: PMC11091854 DOI: 10.1021/acsapm.3c02751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 04/09/2024] [Accepted: 04/15/2024] [Indexed: 05/18/2024]
Abstract
This study explores the influence of electronic and ionic conductivities on the behavior of conjugated polymer binders through the measurement of entropic potential and heat generation in an operating lithium-ion battery. Specifically, the traditional poly(vinylidene fluoride) (PVDF) binder in LiNi0.8Co0.15Al0.05O2 (NCA) cathode electrodes was replaced with semiconducting polymer binders based on poly(3,4-propylenedioxythiophene). Two conjugated polymers were explored: one is a homopolymer with all aliphatic side chains, and the other is a copolymer with both aliphatic and ethylene oxide side chains. We have shown previously that both polymers have high electronic conductivity in the potential range of NCA redox, but the copolymer has a higher ionic conductivity and a slightly lower electronic conductivity. Entropic potential measurements during battery cycling revealed consistent trends during delithiation for all of the binders, indicating that the binders did not modify the expected NCA solid solution deintercalation process. The entropic signature of polymer doping to form the conductive state could be clearly observed at potentials below NCA oxidation, however. Operando isothermal calorimetric measurements showed that the conductive binders resulted in less Joule heating compared to PVDF and that the net electrical energy was entirely dissipated as heat. In a comparison of the two conjugated polymer binders, the heat dissipation was lower for the homopolymer binder at lower C-rates, suggesting that electronic conductivity rather than ionic conductivity was the most important for reducing Joule heating at lower rates, but that ionic conductivity became more important at higher rates.
Collapse
Affiliation(s)
- Sun Woong Baek
- Mechanical
and Aerospace Engineering Department, Henry Samueli School of Engineering
and Applied Science, University of California,
Los Angeles, Los Angeles, California 90095, United States
| | - Charlene Z. Salamat
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, Los
Angeles, California 90095, United States
| | - Rodrigo Elizalde-Segovia
- Department
of Chemistry and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, California 90089, United States
| | - Pratyusha Das
- Department
of Chemistry and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, California 90089, United States
| | - Matevž Frajnkovič
- Mechanical
and Aerospace Engineering Department, Henry Samueli School of Engineering
and Applied Science, University of California,
Los Angeles, Los Angeles, California 90095, United States
| | - Yucheng Zhou
- Mechanical
and Aerospace Engineering Department, Henry Samueli School of Engineering
and Applied Science, University of California,
Los Angeles, Los Angeles, California 90095, United States
| | - Barry C. Thompson
- Department
of Chemistry and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, California 90089, United States
| | - Sri R. Narayan
- Department
of Chemistry and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, California 90089, United States
| | - Sarah H. Tolbert
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, Los
Angeles, California 90095, United States
- Department
of Materials Science and Engineering, University
of California, Los Angeles, Los
Angeles, California 90095, United States
- California
NanoSystems Institute, University of California,
Los Angeles, Los Angeles, California 90095, United States
| | - Laurent Pilon
- Mechanical
and Aerospace Engineering Department, Henry Samueli School of Engineering
and Applied Science, University of California,
Los Angeles, Los Angeles, California 90095, United States
- California
NanoSystems Institute, University of California,
Los Angeles, Los Angeles, California 90095, United States
- Institute
of the Environment and Sustainability, University
of California, Los Angeles, Los
Angeles, California 90095, United States
| |
Collapse
|
|
2
|
Song P, Li Y, Bao L, Liang X, Qi M, Li H, Tang Y. An understanding of a 3D hierarchically porous carbon modified electrode based on finite element modeling. NEW J CHEM 2022. [DOI: 10.1039/d2nj01890j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new strategy for the electrochemical evaluation of a 3D hierarchically porous carbon modified electrode is proposed via finite element modeling.
Collapse
Affiliation(s)
- Peng Song
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Environmental and Chemical Engineering, Beijing University of Technology, Beijing 100124, P. R. China
| | - Yan Li
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Environmental and Chemical Engineering, Beijing University of Technology, Beijing 100124, P. R. China
| | - Linghan Bao
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Environmental and Chemical Engineering, Beijing University of Technology, Beijing 100124, P. R. China
| | - Xiaohua Liang
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, P. R. China
| | - Mengyuan Qi
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Environmental and Chemical Engineering, Beijing University of Technology, Beijing 100124, P. R. China
| | - Hanbing Li
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, Beijing University of Technology, Beijing 100124, P. R. China
| | - Yang Tang
- National Fundamental Research Laboratory of New Hazardous Chemicals Assessment and Accident Analysis, Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| |
Collapse
|
|
3
|
Munteshari O, Borenstein A, DeBlock RH, Lau J, Whang G, Zhou Y, Likitchatchawankun A, Kaner RB, Dunn B, Pilon L. In Operando Calorimetric Measurements for Activated Carbon Electrodes in Ionic Liquid Electrolytes under Large Potential Windows. CHEMSUSCHEM 2020; 13:1013-1026. [PMID: 31808623 DOI: 10.1002/cssc.201903011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 12/04/2019] [Indexed: 06/10/2023]
Abstract
This study aims to investigate the effect of the potential window on heat generation in carbon-based electrical double layer capacitors (EDLCs) with ionic-liquid (IL)-based electrolytes using in operando calorimetry. The EDLCs consisted of two identical activated-carbon electrodes with either neat 1-butyl-1-methylpyrrolidinium bis(trifluoromethane-sulfonyl)imide ([Pyr14 ][TFSI]) electrolyte or 1.0 m [Pyr14 ][TFSI] in propylene carbonate (PC) as electrolyte. The instantaneous heat generation rate at each electrode was measured under galvanostatic cycling for different potential windows ranging from 1 to 4 V. First, the heat generation rates at the positive and negative electrodes differed significantly in neat IL owing to the differences in the ion sizes and diffusion coefficients. However, these differences were minimized when the IL was diluted in PC. Second, for EDLC in neat [Pyr14 ][TFSI] at high potential window (4 V), a pronounced endothermic peak was observed at the beginning of the charging step at the positive electrode owing to TFSI- intercalation in the activated carbon. On the other hand, for EDLC in 1.0 m [Pyr14 ][TFSI] in PC at potential window above 3 V, an endothermic peak was observed only at the negative electrode owing to the decomposition of PC. Third, for both neat and diluted [Pyr14 ][TFSI] electrolytes, the irreversible heat generation rate increased with increasing potential window and exceeded Joule heating. This was attributed to the effect of potential-dependent charge redistribution resistance. A further increase in the irreversible heat generation rate was observed for the largest potential windows owing to the degradation of the PC solvent. Finally, for both types of electrolyte, the reversible heat generation rate increased with increasing potential window because of the increase in the amount of ion adsorbed/desorbed at the electrode/electrolyte interface.
Collapse
Affiliation(s)
- Obaidallah Munteshari
- Mechanical and Aerospace Engineering Department, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
- Mechanical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Arie Borenstein
- Chemistry Department, Ariel University, Ariel, Israel
- Chemistry and Biochemistry Department, University of California, Los Angeles, California, 90095, USA
| | - Ryan H DeBlock
- Materials Science and Engineering Department, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
| | - Jonathan Lau
- Materials Science and Engineering Department, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
| | - Grace Whang
- Materials Science and Engineering Department, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
| | - Yucheng Zhou
- Mechanical and Aerospace Engineering Department, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
| | - Ampol Likitchatchawankun
- Mechanical and Aerospace Engineering Department, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
| | - Richard B Kaner
- Chemistry and Biochemistry Department, University of California, Los Angeles, California, 90095, USA
- Materials Science and Engineering Department, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
- California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA
| | - Bruce Dunn
- Materials Science and Engineering Department, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
- California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA
| | - Laurent Pilon
- Mechanical and Aerospace Engineering Department, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
- California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA
| |
Collapse
|