Zwitterionic polymer coupled with high concentrated electrolytes to achieve high ionic conductivity and wide electrochemical window for supreme specific energy aqueous supercapacitors

Towards stable and efficient electrolytes for room-temperature rechargeable calcium batteries

Energy & Environmental Science ◽

10.1039/c9ee01699f ◽

2019 ◽

Vol 12 (12) ◽

pp. 3496-3501 ◽

Cited By ~ 46

Author(s):

Zhenyou Li ◽

Olaf Fuhr ◽

Maximilian Fichtner ◽

Zhirong Zhao-Karger

Keyword(s):

Ionic Conductivity ◽

Room Temperature ◽

High Ionic Conductivity ◽

Electrochemical Window

A novel Ca electrolyte with a broad electrochemical window and high ionic conductivity is demonstrated.

Defect-Mediated Conductivity Enhancements in Na3-xPn1-xWxS4 (Pn = P, Sb) using Aliovalent Substitutions

10.26434/chemrxiv.9943961.v2 ◽

2019 ◽

Author(s):

Till Fuchs ◽

Sean Culver ◽

Paul Till ◽

Wolfgang Zeier

Keyword(s):

Ionic Conductivity ◽

Vacancy Concentration ◽

Sodium Ion ◽

High Ionic Conductivity ◽

Ionic Conductors ◽

X Ray Diffraction ◽

X Ray ◽

Solid State Batteries ◽

Ion Conducting ◽

Very High

The sodium-ion conducting family of Na3PnS4, with Pn = P, Sb, have gained interest for the use in solid-state batteries due to their high ionic conductivity. However, significant improvements to the conductivity have been hampered by the lack of aliovalent dopants that can introduce vacancies into the structure. Inspired by the need for vacancy introduction into Na3PnS4, the solid solutions with WS42- introduction are explored. The influence of the substitution with WS42- for PS43- and SbS43-, respectively, is monitored using a combination of X-ray diffraction, Raman and impedance spectroscopy. With increasing vacancy concentration improvements resulting in a very high ionic conductivity of 13 ± 3 mS·cm-1 for Na2.9P0.9W0.1S4 and 41 ± 8 mS·cm-1 for Na2.9Sb0.9W0.1S4 can be observed. This work acts as a stepping-stone towards further engineering of ionic conductors using vacancy-injection via aliovalent substituents.

Defect-Mediated Conductivity Enhancements in Na3-xPn1-xWxS4 (Pn = P, Sb) using Aliovalent Substitutions

10.26434/chemrxiv.9943961.v1 ◽

2019 ◽

Author(s):

Till Fuchs ◽

Sean Culver ◽

Paul Till ◽

Wolfgang Zeier

Keyword(s):

Ionic Conductivity ◽

Vacancy Concentration ◽

Sodium Ion ◽

High Ionic Conductivity ◽

Ionic Conductors ◽

X Ray Diffraction ◽

X Ray ◽

Solid State Batteries ◽

Ion Conducting ◽

Very High

The sodium-ion conducting family of Na3PnS4, with Pn = P, Sb, have gained interest for the use in solid-state batteries due to their high ionic conductivity. However, significant improvements to the conductivity have been hampered by the lack of aliovalent dopants that can introduce vacancies into the structure. Inspired by the need for vacancy introduction into Na3PnS4, the solid solutions with WS42- introduction are explored. The influence of the substitution with WS42- for PS43- and SbS43-, respectively, is monitored using a combination of X-ray diffraction, Raman and impedance spectroscopy. With increasing vacancy concentration improvements resulting in a very high ionic conductivity of 13 ± 3 mS·cm-1 for Na2.9P0.9W0.1S4 and 41 ± 8 mS·cm-1 for Na2.9Sb0.9W0.1S4 can be observed. This work acts as a stepping-stone towards further engineering of ionic conductors using vacancy-injection via aliovalent substituents.

Solid Polymer Electrolytes from Crosslinked PEG and Dilithium N,N'-Bis(trifluoromethanesulfonyl)perfluoroalkane-1,ω-disulfonamide and Lithium Bis(trifluoromethanesulfonyl)imide Salts

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc20081777 ◽

2008 ◽

Vol 73 (12) ◽

pp. 1777-1798 ◽

Cited By ~ 1

Author(s):

Olt E. Geiculescu ◽

Rama V. Rajagopal ◽

Emilia C. Mladin ◽

Stephen E. Creager ◽

Darryl D. Desmarteau

Keyword(s):

Ionic Conductivity ◽

Polymer Electrolytes ◽

Minimum Energy ◽

Ionic Conductivities ◽

Solid Polymer Electrolytes ◽

Solid Polymer ◽

Segmental Motion ◽

Concentrated Electrolytes ◽

Two Factors ◽

Poly Ethylene

The present work consists of a series of studies with regard to the structure and charge transport in solid polymer electrolytes (SPE) prepared using various new bis(trifluoromethanesulfonyl)imide (TFSI)-based dianionic dilithium salts in crosslinked low-molecular-weight poly(ethylene glycol). Some of the thermal properties (glass transition temperature, differential molar heat capacity) and ionic conductivities were determined for both diluted (EO/Li = 30:1) and concentrated (EO/Li = 10:1) SPEs. Trends in ionic conductivity of the new SPEs with respect to anion structure revealed that while for the dilute electrolytes ionic conductivity is generally rising with increased length of the perfluoroalkylene linking group in the dianions, for the concentrated electrolytes the trend is reversed with respect to dianion length. This behavior could be the result of a combination of two factors: on one hand a decrease in dianion basicity that results in diminished ion pairing and an enhancement in the number of charge carriers with increasing fluorine anion content, thereby increasing ionic conductivity while on the other hand the increasing anion size and concentration produce an increase in the friction/entanglements of the polymeric segments which lowers even more the reduced segmental motion of the crosslinked polymer and decrease the dianion contribution to the overall ionic conductivity. DFT modeling of the same TFSI-based dianionic dilithium salts reveals that the reason for the trend observed is due to the variation in ion dissociation enthalpy, derived from minimum-energy structures, with respect to perfluoroalkylene chain length.

Dual-Cation Electrolytes Crosslinked with MXene for High-Performance Electrochromic Devices

Nanomaterials ◽

10.3390/nano11040874 ◽

2021 ◽

Vol 11 (4) ◽

pp. 874

Author(s):

Soyoung Bae ◽

Youngno Kim ◽

Jeong Min Kim ◽

Jung Hyun Kim

Keyword(s):

Ionic Conductivity ◽

Response Time ◽

Indium Tin Oxide ◽

High Performance ◽

Fast Response ◽

High Ionic Conductivity ◽

Electrochromic Device ◽

Fast Response Time ◽

Coloration Efficiency ◽

Conduction Pathway

MXene, a 2D material, is used as a filler to manufacture polymer electrolytes with high ionic conductivity because of its unique sheet shape, large specific surface area and high aspect ratio. Because MXene has numerous -OH groups on its surface, it can cause dehydration and condensation reactions with poly(4-styrenesulfonic acid) (PSSA) and consequently create pathways for the conduction of cations. The movement of Grotthuss-type hydrogen ions along the cation-conduction pathway is promoted and a high ionic conductivity can be obtained. In addition, when electrolytes composed of a conventional acid or metal salt alone is applied to an electrochromic device (ECD), it does not bring out fast response time, high coloration efficiency and transmittance contrast simultaneously. Therefore, dual-cation electrolytes are designed for high-performance ECDs. Bis(trifluoromethylsulfonyl)amine lithium salt (LiTFSI) was used as a source of lithium ions and PSSA crosslinked with MXene was used as a source of protons. Dual-Cation electrolytes crosslinked with MXene was applied to an indium tin oxide-free, all-solution-processable ECD. The effect of applying the electrolyte to the device was verified in terms of response time, coloration efficiency and transmittance contrast. The ECD with a size of 5 × 5 cm2 showed a high transmittance contrast of 66.7%, fast response time (8 s/15 s) and high coloration efficiency of 340.6 cm2/C.

Red Phosphorous‐Derived Protective Layers with High Ionic Conductivity and Mechanical Strength on Dendrite‐Free Sodium and Potassium Metal Anodes

Advanced Energy Materials ◽

10.1002/aenm.202003381 ◽

2020 ◽

pp. 2003381

Author(s):

Pengcheng Shi ◽

Shipeng Zhang ◽

Gongxun Lu ◽

Lifeng Wang ◽

Yu Jiang ◽

...

Keyword(s):

Ionic Conductivity ◽

Mechanical Strength ◽

High Ionic Conductivity ◽

Protective Layers ◽

Sodium And Potassium ◽

Metal Anodes

Moderately concentrated acetonitrile‐containing electrolytes with high ionic conductivity for durability‐oriented lithium‐ion batteries

ChemElectroChem ◽

10.1002/celc.202100927 ◽

2021 ◽

Author(s):

Naoki Matsuoka ◽

Hirokazu Kamine ◽

Yutaka Natsume ◽

Akira Yoshino

Keyword(s):

Ionic Conductivity ◽

Lithium Ion Batteries ◽

Lithium Ion ◽

High Ionic Conductivity

Study on Li0.33La0.55TiO3 Solid Electrolyte with High Ionic Conductivity and Its Application in Flexible All Solid-State Battery

Nanoscale ◽

10.1039/d1nr02427b ◽

2021 ◽

Author(s):

Feihu Tan ◽

Hua An ◽

Ning Li ◽

Jun Du ◽

Zhengchun Peng

Keyword(s):

Solid State ◽

Ionic Conductivity ◽

Solid Electrolyte ◽

High Ionic Conductivity ◽

Energy Sources ◽

Solid State Battery ◽

Solid State Batteries ◽

All Solid State Batteries

As flexible all-solid-state batteries are highly safe and lightweight, they can be considered as candidates for wearable energy sources. However, their performance needs to be first improved, which can be...

Electrospun Modified Polyketone-Based Anion Exchange Membranes with High Ionic Conductivity and Robust Mechanical Properties

ACS Applied Energy Materials ◽

10.1021/acsaem.1c00727 ◽

2021 ◽

Author(s):

Yi-cun Zhou ◽

Rui-Ying Bao ◽

Zhengying Liu ◽

Ming-Bo Yang ◽

Wei Yang

Keyword(s):

Mechanical Properties ◽

Ionic Conductivity ◽

Anion Exchange ◽

High Ionic Conductivity ◽

Anion Exchange Membranes

High Ionic Conductivity of Liquid-Phase-Synthesized Li3PS4 Solid Electrolyte, Comparable to That Obtained via Ball Milling

ACS Applied Energy Materials ◽

10.1021/acsaem.0c02771 ◽

2021 ◽

Author(s):

Kentaro Yamamoto ◽

Seunghoon Yang ◽

Masakuni Takahashi ◽

Koji Ohara ◽

Tomoki Uchiyama ◽

...

Keyword(s):

Liquid Phase ◽

Ionic Conductivity ◽

Solid Electrolyte ◽

Ball Milling ◽

High Ionic Conductivity