Inorganic/Organic Double-Network Ion Gels with Partially Developed Silica-Particle Network

Yasui, Tomoki; Kamio, Eiji; Matsuyama, Hideto

doi:10.1021/acs.langmuir.8b01930

Cited by 33 publications

(59 citation statements)

References 41 publications

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“…We recently developed tough inorganic/organic composite network ion gels composed of silica particle network clusters and poly(N,N-dimethylacrylamide) (PDMAAm) networks, named inorganic/organic micro-double network (m-DN) ion gels. 7 The m-DN ion gels showed 25 times higher toughness than the PDMAAm based-single network (SN) ion gels. The principal toughening mechanism of the m-DN ion gels was based on that of the well-known double network hydrogels which are composed of interpenetrating brittle and ductile polymer networks.…”

Section: Introductionmentioning

confidence: 97%

“…8 In the m-DN ion gels, the silica particle network cluster acted as the sacricial bonds and the PDMAAm network with a low cross-link density acted as the hidden length. 7,9 The excellent toughness of the m-DN ion gels was attributed to the energy dissipation due to the fracture of the silica particle network clusters during gel deformation. 7 Therefore, the toughness of the m-DN ion gels was governed by the amount of the silica particle network clusters which were fractured during deformation.…”

Section: Introductionmentioning

confidence: 99%

“…7,9 The excellent toughness of the m-DN ion gels was attributed to the energy dissipation due to the fracture of the silica particle network clusters during gel deformation. 7 Therefore, the toughness of the m-DN ion gels was governed by the amount of the silica particle network clusters which were fractured during deformation. The amount of the fractured silica particle network clusters depends on the fracture strain of the m-DN ion gels.…”

Section: Introductionmentioning

confidence: 99%

“…In fact, our previous study indicated that a decrease in the fracture strain of the inorganic/organic DN ion gels lead to a decrease in the toughness. 10 In addition, because the dissipated energy of the m-DN ion gels was monotonically increased by increasing the strain up to the fracture point, 7 it was concluded that many unbroken silica particle network clusters still remained in the fractured m-DN ion gel. Therefore, it is expected that if the fracture strain of the m-DN ion gels was increased, more silica particle network clusters would be fractured, which leads to an increase in the toughness of the m-DN ion gels.…”

Section: Introductionmentioning

confidence: 99%

“…This was able to act as the multiple H-bond cross-linker of the gel network, to develop tough and stretchable m-DN ion gels. The synthesized gemini- 7,9,11,12), were composed of a hydroxyethyl-imidazoliumbased di-cation and two [Tf 2 N] À anions ( Fig. S1(a-e) †).…”

Section: Introductionmentioning

confidence: 99%

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Tough and stretchable inorganic/organic double network ion gel containing gemini-type ionic liquid as a multiple hydrogen bond cross-linker

2019

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Tough and stretchable inorganic/organic double network ion gel containing gemini-type ionic liquid as a multiple hydrogen bond cross-linker

2019

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Ultratough and recoverable ionogels based on multiple interpolymer hydrogen bonding as durable electrolytes for flexible solid‐state supercapacitor

Wang

et al. 2020

J of Applied Polymer Sci

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The emerging application of ionogels in flexible devices require it enough durable under repeated mechanical deformation while maintaining their superior electrochemical properties. In this work, ultratough and recoverable ionogels, where ionic liquids are confined in chemically and interpolymer hydrogen‐bonding hybrid crosslinked network, were fabricated by in situ copolymerization of acrylic acid and 1‐vinylimidazole monomer within 1‐buty‐3‐methylimidazolium chloride ionic liquid. The reversible hydrogen bonds between imidazole and carboxylic acid groups of polymer chains in the network work as reversible “sacrificial bonds” to toughen ionogel, which makes the ionogels tough (tensile strength 1.62 MPa, toughness 8.7 MJ m−3), stretchable (elongation at break 1090%), and recoverable (91% recovery resting for 30 min, at 534 kPa stress and 500% strain). Moreover, the hydrogen‐bonded ionogels exhibit high ionic conductivity of 2.3 S m−1 at 80°C to 3.2 S m−1 at 150°C. Furthermore, the ionogel‐based flexible electrical double‐layer capacitor can be operated up to 1.5 V with a capacitance of 341.47 F g−1 at 0.5 A·g−1 and exhibits excellent capacitance retention after 1000 cycles as well as superior electrochemical performance over a wide range of temperature. This work provides new insights into the synthesis of tough and recoverable ionogels for high‐performance flexible supercapacitors.

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Enzyme‐Induced Ferrification of Hydrogels for Toughening of Functional Inorganic Compounds

Milovanovic

Rauner

Civelek

et al. 2022

Macro Materials & Eng

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Enzyme-induced mineralization (EIM) has been shown to greatly enhance the mechanical properties of hydrogels by precipitation of calcium salts. Another feature of such hydrogels is their high toughness even when containing finely nanostructured mineral content of ≈75 wt%. This might be useful for bendable materials with high content of functional inorganic nanostructures. The present study demonstrates that EIM can form homogeneous nanostructures of water-insoluble iron salts within hydrogels. Crystalline iron(II) carbonate precipitates urease-induced within polyacrylate-based hydrogels and forms platelet structures that have the potential of forming self-organized nacre-like architectures. The platelet structure can be influenced by chemical composition of the hydrogel. Further, amorphous iron(II) phosphate precipitates within hydrogels with alkaline phosphatase, forming a nanostructured porous inorganic phase, homogeneously distributed within the double network hydrogel. The high amount of iron phosphate (more than 80 wt%) affords a stiffness of ≈100 MPa. The composite is still bendable with considerable toughness of 400 J m −2 and strength of 1 MPa. The high water content (>50%) may allow fast diffusion processes within the material. This makes the iron phosphate-based composite an interesting candidate for flexible electrodes and demonstrates that EIM can be used to deliberately soften ceramic materials, rendering them bendable.

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Inorganic/Organic Double-Network Ion Gels with Partially Developed Silica-Particle Network

Cited by 33 publications

References 41 publications

Tough and stretchable inorganic/organic double network ion gel containing gemini-type ionic liquid as a multiple hydrogen bond cross-linker

Tough and stretchable inorganic/organic double network ion gel containing gemini-type ionic liquid as a multiple hydrogen bond cross-linker

Ultratough and recoverable ionogels based on multiple interpolymer hydrogen bonding as durable electrolytes for flexible solid‐state supercapacitor

Enzyme‐Induced Ferrification of Hydrogels for Toughening of Functional Inorganic Compounds

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