Anhydrous proton‐conducting electrolyte based on a nematic poly(methyl acrylate) containing sulfonated side chains

Liang, Ting; Wu, Yong; Tan, Shuai; Wang, Caihong

doi:10.1002/app.40382

Cited by 8 publications

(6 citation statements)

References 33 publications

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“…[ 30,31 ] The peaks at 1265 cm −1 depict CO asymmetric bridge stretching of the anion‐selective gel. [ 32 ] The NH stretching of amide groups for the APTMAC is observed at 3354 and 3185 cm −1 respectively. The peaks of the CH stretch from CH 2 and CH 3 at 2942 cm −1 , and the peaks of the amide II band, amide I band, and NH are observed at 1560, 1655, and 1537 cm −1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Design and Mechanism of a Self‐Powered and Disintegration–Reorganization–Regeneration Power Supply with Cold Resistance

et al. 2021

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in the future, and the power supply plays a fundamental role in deformable disintegration-reorganization robots. [1][2][3][4][5][6] From the perspective of technique, there are two basic approaches to solve the power supply problem of the disintegration-reorganization-deformation robot. One is to install an independent energy-storage system on each module of the disintegration-reorganization-deformation robot, which is the easiest approach to realize by directly applying high-capacity batteries or supercapacitors at present. [7][8][9] However, the defect of this method is that a disintegration-reorganization-deformation module with the failure of energy storage will lead to the failure of this module in operation, which may seriously affect the original system that needs it to play a role. The other is to make each module possess a self-powered power supply with the ability of disintegration, reorganization and deformation, which can solve the trouble of energy storage. [10][11][12] Therefore, the design and development of self-powered and disintegration-reorganization-regeneration power supply applying for the disintegration-reorganization-deformation robot can not only accelerate the construction and development of science and technology, but also promote the great revolutionary breakthroughs in the fields of transportation, construction, intelligent industry, etc.Up to now, power supplies designed based on the electrochemical reaction principle have had unavoidable defects, in that a complete redox reaction must be formed inside the power supply to operate normally, which makes it unable to be reconstructed and regenerated. Hence, the design and interpretation of this self-powered and disintegration-reorganization-regeneration power supply are generally considered to be almost insurmountable obstacles to haunt both experimenters and theorists. Herein, a self-powered and disintegration-reorganization-regeneration power supply with relatively stable discharge for 8.3 h is realized by the principle of ion-selective diffusion, which regenerates by radical polymerization. Additionally, the mechanism is investigated systematically by molecular dynamics simulation, and this power supply with a variety of self-powered and disintegration-reorganizationregeneration units can discharge continuously at freezing temperatures and variable temperature (0-25 °C). As a hypothetical model, a self-powered and deformable arch bridge with disintegration and reorganization is fabricated. In the future, this power supply is expected to be applied in prosthetic limbs, bionic skins, implantable power supplies, mobile phones, portable computers, wearable devices, etc. Moreover, with the improvement of the stability and discharge life, it could promote major revolutionary breakthroughs in the fields of intelligent industrial automation, smart buildings, intelligent transportation systems, intelligent power systems, etc.

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Section: Resultsmentioning

confidence: 99%

Design and Mechanism of a Self‐Powered and Disintegration–Reorganization–Regeneration Power Supply with Cold Resistance

et al. 2021

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“…The brominated precursor containing mesogenic side chains (P Br ) was prepared according to the procedure described previously . The molecular weight of P Br was 1.1 × 10 4 g·mol −1 .…”

Section: Methodsmentioning

confidence: 99%

“…In this study, we demonstrate an alternative strategy to prepare imidazolium liquid crystal polymers. We have modified a brominated side chain liquid crystal polymer successfully with 2‐hydroxyethanesulfonic acid sodium salt to obtain mesomorphic sulfonated polymers . In this report, hydroxide and tetrafluoroborate salts of imidazolium polyacrylates were prepared by postpolymerization functionalization of the same brominated precursor with 1‐methyl‐1H‐imidazole.…”

Section: Introductionmentioning

confidence: 99%

Conductive imidazolium side chain liquid crystal polyacrylates prepared from postpolymerization functionalization

Wang

Tan

et al. 2014

J of Applied Polymer Sci

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Hydroxide and tetrafluoroborate salts of imidazolium polyacrylates have been prepared from postpolymerization functionalization of a brominated precursor containing mesogenic side chains followed by anion exchange. The ionic polyacrylates possessed molecular weights in the range 1.1-1.3 3 10 4 gÁmol 21 . Differential scanning calorimetry measurements and polarizing optical microscope observation indicated that the resultant ionic polyacrylates exhibited smectic C and A liquid crystal phases over a temperature range of about 60 C. Electrochemical impedance spectroscopy measurements show that ionic conductivities of the hydroxide salt were much higher than those of the tetrafluoroborate salt for the imidazolium polyacrylates at the same temperature. The maximum ionic conductivity of the random hydroxide salt of imidazolium polyacrylate in the smectic A phase reached 4.45 3 10 22 SÁcm 21 . The ionic polyacrylates were successfully aligned by mechanical shearing in the smectic A phase. Ionic conductivities of the sheared samples were more than 1 order of magnitude higher than those of the random samples in the solid state.

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“…Accordingly, a number of efforts have been devoted to develop polymeric electrolytes applicable for fuel cells under anhydrous conditions. − Anhydrous proton conduction can be achieved by relaying protons between molecules capable of forming hydrogen bonds through a hopping mechanism . We have proposed construction of proton conductive pathways through functional liquid crystals containing protic moieties such as sulfonic acid, phosphonic acid, benzimidazole, and pyridinium salts. − The protic moieties as terminal substitutes were attached to a rigid mesogen to obtain rod-shaped molecules. Strong polarity of the terminal protic moieties enhanced microphase segregation of the molecules to induce a smectic liquid crystal phase.…”

Section: Introductionmentioning

confidence: 99%

Ionic Liquid Crystalline Composite Membranes Composed of Smectic Imidazolium Hydrogen Sulfate and Polyvinyl Alcohol for Anhydrous Proton Conduction

Xie

Tan

Yang

et al. 2020

Ind. Eng. Chem. Res.

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Proton exchange membranes are widely used in fuel cells for directly converting chemical energy into electrical energy. Commercially successful perfluorosulfonic acid membranes do not have the ability of proton conduction under dry conditions. Owing to the advantages of simplified thermal and water management, anhydrous proton conductive materials are appealing. Herein, a novel liquid crystalline composite membrane is prepared by a solution cast method for anhydrous proton conduction at elevated temperatures. Linear polyvinyl alcohol acts as “main chain”, and mesomorphic imidazolium hydrogen sulfate molecules containing a rigid mesogen act as “side chains” to form a side-chain like liquid crystalline composite. Furthermore, the composite membrane can be macroscopically aligned through unidirectionally shearing to promote anhydrous proton conduction. The composite exhibits a conductivity of 2.8 × 10–4 S cm–1 at 150 °C and a tensile strength up to 6.7 MPa. The ionic liquid crystalline composite offers a facile way to achieve ordered molecular arrangement in membranes for proton conduction at elevated temperatures.

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Anhydrous proton‐conducting electrolyte based on a nematic poly(methyl acrylate) containing sulfonated side chains

Cited by 8 publications

References 33 publications

Design and Mechanism of a Self‐Powered and Disintegration–Reorganization–Regeneration Power Supply with Cold Resistance

Design and Mechanism of a Self‐Powered and Disintegration–Reorganization–Regeneration Power Supply with Cold Resistance

Conductive imidazolium side chain liquid crystal polyacrylates prepared from postpolymerization functionalization

Ionic Liquid Crystalline Composite Membranes Composed of Smectic Imidazolium Hydrogen Sulfate and Polyvinyl Alcohol for Anhydrous Proton Conduction

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