Linear poly(propylenimine)/lithium triflate as a polymer electrolyte system

Hu, Lieyu; Frech, Roger; Glatzhofer, Daniel T.; Mason, R.; York, Shawna S.

doi:10.1016/j.ssi.2008.03.006

Cited by 21 publications

(12 citation statements)

References 26 publications

(42 reference statements)

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“…Linear poly(propylenimine) (PPI) was synthesized by acidic hydrolysis of poly(MeOZI), by adapting a previously published procedure . 200 mL of 5 m aqueous HCl was added to the crude poly(MeOZI) residue and stirred at 100 °C for 48 h. After cooling to room temperature, the residual polymer was concentrated by rotary evaporation at 60 °C, which caused the polymer to precipitate from solution.…”

Section: Methodsmentioning

confidence: 99%

Oxidatively‐Stable Linear Poly(propylenimine)‐Containing Adsorbents for CO₂ Capture from Ultradilute Streams

2018

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Aminopolymer-based solid sorbents have been widely investigated for the capture of CO from dilute streams such as flue gas or ambient air. However, the oxidative stability of the widely studied aminopolymer, poly(ethylenimine) (PEI), is limited, causing it to lose its CO capture capacity after exposure to oxygen at elevated temperatures. Here, we demonstrate the use of linear poly(propylenimine) (PPI), synthesized through a simple cationic ring-opening polymerization, as a more oxidatively stable alternative to PEI with high CO capacity and amine efficiency. The performance of linear PPI/SBA-15 composites was investigated over a range of CO capture conditions (CO partial pressure, adsorption temperature) to examine the tradeoff between adsorption capacity and sorption-site accessibility, which was expected to be more limited in linear polymers relative to the prototypical hyperbranched PEI. Linear PPI/SBA-15 composites were more efficient at CO capture and retained 65-83 % of their CO capacity after exposure to a harsh oxidative treatment, compared to 20-40 % retention for linear PEI. Additionally, we demonstrated long-term stability of linear PPI sorbents over 50 adsorption/desorption cycles with no loss in performance. Combined with other strategies for improving the oxidative stability and adsorption kinetics, linear PPI may play a role as a component of stable solid adsorbents in commercial applications for CO capture.

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Section: Methodsmentioning

confidence: 99%

Oxidatively‐Stable Linear Poly(propylenimine)‐Containing Adsorbents for CO₂ Capture from Ultradilute Streams

2018

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“…Fig. 14 [148][149][150][151][152][153][154][155][156][157] shows that the conductivities of other solid polymer electrolytes are typically in the same range as those of PEO, which is indicated by the broken lines. Electrolytes containing ethylene oxide, such as poly(ethylene oxide) methyl ether methacrylate (PEOMA) [148] and poly(acetyl-oligo(ethylene oxide) acrylate) (PAEOA) [149], or poly(ethylene glycol) (PEG), such as polyester diacrylate (PEDA)-PEG copolymers [150], poly(ethylene glycol) dimethacrylate (PDE) [152], poly(ethylene glycol) methacrylate (PME) [152], poly(ethylene glycol) methyl ether methacrylate (PEGMA) [153] and tri(ethylene glycol) diacrylate (TEGDA) [152], have conductivities in the range of, or even higher than, PEO.…”

Section: Solid Polymer Electrolytesmentioning

confidence: 99%

Ceramic and polymeric solid electrolytes for lithium-ion batteries

Fergus¹

2010

Journal of Power Sources

1,067

753

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“…The exact frequency of the ν s (SO 3 ) mode is slightly dependent on the choice of counter ion and solvent system. In the context of the associated-ion model, the 1029 cm −1 band is consistent with the presence of "free" triflate anions in a system where the oxygen atoms undergo hydrogen bonding interactions, 19,20 whereas the 1036 cm −1 band may be attributed to either ion-paired or more highly aggregated moieties in the ionic liquid. However, the strong monopole-monopole interactions that exist among the constituent ions composing the molten salt make it difficult to unambiguously assign the bands to specific entities.…”

Section: B the Associated-ion Modelmentioning

confidence: 52%

“…As with the ν s (SO 3 ) bands, it is difficult to assign the 757 cm −1 band to a specific coordination geometry. Nonetheless, the frequency of the 757 cm −1 band does decrease to 754 cm −1 when the ionic liquid is dissolved in poly(ethylene oxide) (PEO) at an ether oxygen atom to [C 2 mim] + ion mole ratio of 20:1, and the frequency of the 754 cm −1 band in P(EO) 20 [C 2 mim]CF 3 SO 3 is consistent with "free" triflate anions. 21 This assignment is supported by numerous spectroscopic studies of inorganic triflate salts dissolved in PEO where the δ s (CF 3 ) mode occurs near 754 cm −1 .…”

Section: B the Associated-ion Modelmentioning

confidence: 98%

Existence of optical phonons in the room temperature ionic liquid 1-ethyl-3-methylimidazolium trifluoromethanesulfonate

Burba

Frech

2011

The Journal of Chemical Physics

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The technologically important properties of room temperature ionic liquids (RTILs) are fundamentally linked to the ion-ion interactions present among the constituent ions. These ion-ion interactions in one RTIL (1-ethyl-3-methylimidazolium trifluoromethanesulfonate, [C(2)mim]CF(3)SO(3)) are characterized with transmission FTIR spectroscopy and polarized attenuated total reflection (ATR) FTIR spectroscopy. A quasilattice model is determined to be the best framework for understanding the ionic interactions. A novel spectroscopic approach is proposed to characterize the degree of order that is present in the quasilattice by comparing the dipole moment derivative calculated from two independent spectroscopic measurements: (1) the TO-LO splitting of a vibrational mode using dipolar coupling theory and (2) the optical constants of the material derived from polarized ATR experiments. In principle, dipole moment derivatives calculated from dipolar coupling theory should be similar to those calculated from the optical constants if the quasilattice of the RTIL is highly structured. However, a significant disparity for the two calculations is noted for [C(2)mim]CF(3)SO(3), indicating that the quasilattice of [C(2)mim]CF(3)SO(3) is somewhat disorganized. The potential ability to spectroscopically characterize the structure of the quasilattice, which governs the long-range ion-ion interactions in a RTIL, is a major step forward in understanding the interrelationship between the molecular-level interactions among the constituent ions of an ionic liquid and the important physical properties of the RTIL.

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Linear poly(propylenimine)/lithium triflate as a polymer electrolyte system

Cited by 21 publications

References 26 publications

Oxidatively‐Stable Linear Poly(propylenimine)‐Containing Adsorbents for CO₂ Capture from Ultradilute Streams

Oxidatively‐Stable Linear Poly(propylenimine)‐Containing Adsorbents for CO₂ Capture from Ultradilute Streams

Ceramic and polymeric solid electrolytes for lithium-ion batteries

Existence of optical phonons in the room temperature ionic liquid 1-ethyl-3-methylimidazolium trifluoromethanesulfonate

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Linear poly(propylenimine)/lithium triflate as a polymer electrolyte system

Cited by 21 publications

References 26 publications

Oxidatively‐Stable Linear Poly(propylenimine)‐Containing Adsorbents for CO2 Capture from Ultradilute Streams

Oxidatively‐Stable Linear Poly(propylenimine)‐Containing Adsorbents for CO2 Capture from Ultradilute Streams

Ceramic and polymeric solid electrolytes for lithium-ion batteries

Existence of optical phonons in the room temperature ionic liquid 1-ethyl-3-methylimidazolium trifluoromethanesulfonate

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Oxidatively‐Stable Linear Poly(propylenimine)‐Containing Adsorbents for CO₂ Capture from Ultradilute Streams

Oxidatively‐Stable Linear Poly(propylenimine)‐Containing Adsorbents for CO₂ Capture from Ultradilute Streams