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Jang S, Schroeder CM, Evans CM. Multiple energy dissipation modes in dynamic polymer networks with neutral and ionic junctions. Chem Commun (Camb) 2024; 60:8431-8434. [PMID: 39037399 DOI: 10.1039/d4cc02013h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Polymer networks with controlled ratios of neutral and ionic dynamic crosslink points were prepared from ethylene glycol, boric acid, and lithium hydroxide. Both neutral and ionic sites led to the emergence of distinct damping modes separate from the glass transition. This work highlights the potential of polymer networks for multimodal damping spectra through dynamic bond selection.
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Affiliation(s)
- Seongon Jang
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, 1304 W Green St, Urbana, Illinois, 61801, USA.
- Materials Research Laboratory, University of Illinois Urbana-Champaign, 104 S Goodwin Ave, Urbana, Illinois, 61801, USA
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, 405 N Mathews Ave, Urbana, Illinois, 61801, USA
| | - Charles M Schroeder
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, 1304 W Green St, Urbana, Illinois, 61801, USA.
- Materials Research Laboratory, University of Illinois Urbana-Champaign, 104 S Goodwin Ave, Urbana, Illinois, 61801, USA
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, 405 N Mathews Ave, Urbana, Illinois, 61801, USA
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, 600 S Mathews Ave, Urbana, Illinois, 61801, USA
| | - Christopher M Evans
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, 1304 W Green St, Urbana, Illinois, 61801, USA.
- Materials Research Laboratory, University of Illinois Urbana-Champaign, 104 S Goodwin Ave, Urbana, Illinois, 61801, USA
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, 405 N Mathews Ave, Urbana, Illinois, 61801, USA
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Abstract
Polyvinylidene fluoride (PVDF) films are widely used in sensors for their wide response frequency, good flexibility, low acoustic impedance, and chemical stability. In this work, PVDF/CaCl2 piezoelectric films were prepared by an electro-assisted 3D printing method and used to form a multi-layer composite film sensor. The study found that the addition of CaCl2 can effectively increase the β-phase content in the PVDF film and improve the piezoelectric and dielectric properties of the PVDF composite film sensors. When the content of CaCl2 is 0.15 wt.%, the β-phase content of the PVDF/CaCl2 composite film can reach the highest value of up to 48.47%, and the output voltage response of the sensor is 0.62 V at an input frequency of 10 Hz, 10 V voltage. The output voltage of PVDF composite film sensor with two and three layers is 1.306 and 1.693 times that of a single layer, respectively. The sensitivity of the multi-layer sensors has also been greatly improved.
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Potrzebowska N, Cavani O, Kazmierski S, Wegrowe JE, Potrzebowski MJ, Clochard MC. Molecular dynamics between amorphous and crystalline phases of e-beam irradiated piezoelectric PVDF thin films employing solid-state NMR spectroscopy. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2021.109786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Hestenes JC, Ells AW, Navarro Goldaraz M, Sergeyev IV, Itin B, Marbella LE. Reversible Deposition and Stripping of the Cathode Electrolyte Interphase on Li 2RuO 3. Front Chem 2020; 8:681. [PMID: 32850679 PMCID: PMC7417863 DOI: 10.3389/fchem.2020.00681] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 06/30/2020] [Indexed: 11/13/2022] Open
Abstract
Performance decline in Li-excess cathodes is generally attributed to structural degradation at the electrode-electrolyte interphase, including transition metal migration into the lithium layer and oxygen evolution into the electrolyte. Reactions between these new surface structures and/or reactive oxygen species in the electrolyte can lead to the formation of a cathode electrolyte interphase (CEI) on the surface of the electrode, though the link between CEI composition and the performance of Li-excess materials is not well understood. To bridge this gap in understanding, we use solid-state nuclear magnetic resonance (SSNMR) spectroscopy, dynamic nuclear polarization (DNP) NMR, and electrochemical impedance spectroscopy (EIS) to assess the chemical composition and impedance of the CEI on Li2RuO3 as a function of state of charge and cycle number. We show that the CEI that forms on Li2RuO3 when cycled in carbonate-containing electrolytes is similar to the solid electrolyte interphase (SEI) that has been observed on anode materials, containing components such as PEO, Li acetate, carbonates, and LiF. The CEI composition deposited on the cathode surface on charge is chemically distinct from that observed upon discharge, supporting the notion of crosstalk between the SEI and the CEI, with Li+-coordinating species leaving the CEI during delithiation. Migration of the outer CEI combined with the accumulation of poor ionic conducting components on the static inner CEI may contribute to the loss of performance over time in Li-excess cathode materials.
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Affiliation(s)
- Julia C Hestenes
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States
| | - Andrew W Ells
- Department of Chemical Engineering, Columbia University, New York, NY, United States
| | - Mateo Navarro Goldaraz
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States
| | | | - Boris Itin
- New York Structural Biology Center, New York, NY, United States
| | - Lauren E Marbella
- Department of Chemical Engineering, Columbia University, New York, NY, United States
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Maghami M, Abdelrasoul A. Pair interaction energy decomposition analysis (PIEDA) and experimental approaches for investigating water interactions with hydrophilic and hydrophobic membranes. J Mol Graph Model 2020; 96:107540. [DOI: 10.1016/j.jmgm.2020.107540] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 01/12/2020] [Accepted: 01/13/2020] [Indexed: 10/25/2022]
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Wang X, Liu P, Liu F, Wang X, Ji M, Song L. Adsorption of Pb(II) by a polyvinylidene fluoride membrane bearing chelating poly(amino phosphonic acid) and poly(amino carboxylic acid) groups. ADSORPT SCI TECHNOL 2018. [DOI: 10.1177/0263617418795531] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Pb(II) can cause a hazardous effect on ecosystem and public health due to its high biotoxicity. A polyvinylidene fluoride-type membrane bearing both poly(amino phosphonic acid) and poly(amino carboxylic acid) functional groups was fabricated for the purpose of Pb(II) removal from the aqueous solutions. The adsorption behaviors of the fabricated chelating membrane toward Pb(II) were studied by the series of static and continuous adsorption experiments. When the pH, adsorption equilibrium time, initial Pb(II) concentration, and temperature were 5.1, 300 min, 1.0 mmol g−1, and 298 K, respectively, Pb(II) uptake of the membrane was 1.1 mmol g−1. The presence of coexisting metal ions and complexing reagents decreased the Pb(II) uptake. The adsorption kinetic and isotherm adsorption followed pseudo-second-order equation and Langmuir model, respectively; this adsorption process showed a spontaneous and exothermic feature. The bed depth service time and Thomas models were suitable for describing obtained breakthrough curves.
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Affiliation(s)
| | | | - Fushun Liu
- Tangshan Haiqingyuan Science and Technology Co., Ltd, China; Yanshan University, China
| | | | - Min Ji
- Yanshan University, China
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Chen Y, Tang X, Shu J, Wang X, Hu W, Shen QD. Crosslinked P(VDF-CTFE)/PS-COOH nanocomposites for high-energy-density capacitor application. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/polb.24023] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yingxin Chen
- Department of Polymer Science & Engineering; MOE Key Laboratory of High Performance Polymer Materials & Technology, School of Chemistry and Chemical Engineering, Nanjing University; Nanjing 210093 China
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University; Nanjing 210093 China
| | - Xin Tang
- Department of Polymer Science & Engineering; MOE Key Laboratory of High Performance Polymer Materials & Technology, School of Chemistry and Chemical Engineering, Nanjing University; Nanjing 210093 China
| | - Jie Shu
- Analysis and Testing Center, Soochow University; Suzhou 215123 China
| | - Xiaoliang Wang
- Department of Polymer Science & Engineering; MOE Key Laboratory of High Performance Polymer Materials & Technology, School of Chemistry and Chemical Engineering, Nanjing University; Nanjing 210093 China
| | - Wenbing Hu
- Department of Polymer Science & Engineering; MOE Key Laboratory of High Performance Polymer Materials & Technology, School of Chemistry and Chemical Engineering, Nanjing University; Nanjing 210093 China
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University; Nanjing 210093 China
| | - Qun-Dong Shen
- Department of Polymer Science & Engineering; MOE Key Laboratory of High Performance Polymer Materials & Technology, School of Chemistry and Chemical Engineering, Nanjing University; Nanjing 210093 China
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Cui Z, Hassankiadeh NT, Zhuang Y, Drioli E, Lee YM. Crystalline polymorphism in poly(vinylidenefluoride) membranes. Prog Polym Sci 2015. [DOI: 10.1016/j.progpolymsci.2015.07.007] [Citation(s) in RCA: 212] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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