Novel composite polymer electrolyte membrane using solid superacidic sulfated zirconia - Functionalized carbon nanotube modified chitosan

Ou, Ying; Tsen, Wen‐Chin; Jang, Shin‐Cheng; Chuang, Fu‐Sheng; Wang, Jie; Li, Hai; Wen, Sheng; Gong, Chunli

doi:10.1016/j.electacta.2018.01.131

Cited by 60 publications

(32 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…24 Ou et al fabricated a functional CNT/CS PEM using superacidic sulfated zirconia-functionalized CNTs to distinctly enhance proton conductivity and mechanical behavior with both high tensile strength and Young's modulus. 12 The poor compatibility and dispersion of CNTs in the membrane limited its application and were not conducive to proton conduction. Our previous study had concluded that sodium ligninsulfonate (SLS) functionalized multi-walled carbon nanotubes (MWCNTs) (SCNT) could effectively improve its dispersibility.…”

Section: Highlightsmentioning

confidence: 99%

“…Zhang et al prepared nanohybrid phosphonic acid‐modified‐GO/Nafion membranes with graphene‐like layered structure, higher proton conductivity, and power density were achieved under high temperature and low humidity . Ou et al fabricated a functional CNT/CS PEM using superacidic sulfated zirconia‐functionalized CNTs to distinctly enhance proton conductivity and mechanical behavior with both high tensile strength and Young's modulus . The poor compatibility and dispersion of CNTs in the membrane limited its application and were not conducive to proton conduction.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Carbon nanocomposites self‐assembly UiO‐66‐doped chitosan proton exchange membrane with enhanced proton conductivity

et al. 2020

View full text Add to dashboard Cite

Summary One‐dimensional (1D) sodium ligninsulfonate functionalized carbon nanotubes (SCNT), two‐dimensional (2D) graphene oxide (GO), and three‐dimensional (3D) zirconium‐based metal‐organic frameworks (UiO‐66) are self‐assembled as filler materials for proton‐exchange membranes (PEMs) because of their potential for extending proton transport pathways. Herein, UiO‐66‐SCNT and UiO‐66‐SCNT@GO were prepared by a facile solvothermal synthesis and then the nanohybrid chitosan (CS) PEMs were fabricated via solution casting. The hybrid PEMs with higher ion exchange capacity than the pure CS membrane displayed higher proton conductivity and selectivity. The proton conductivity of nanohybrid membrane doped with 7 wt% UiO‐66‐SCNT@GO (CS/U‐S@GO‐7) was enhanced to 64 mS cm−1 at 70°C. Simultaneously, the selectivity was reached 19.4 × 104 S s cm−3 and was much higher than the pristine CS membrane (0.13 × 103 S s cm−3). Moreover, the mechanical properties of all composite membranes were significantly enhanced compared with that of the pure CS membrane. The results showed that our research provided a valuable strategy for designing high‐performance CS‐based PEMs in direct methanol fuel cell (DMFC). Highlights A simple and facile solvothermal synthesis was used to prepare UiO‐66‐SCNT@GO. UiO‐66‐SCNT@GO was introduced into chitosan (CS) matrix to optimize proton transport channels. CS‐based hybrid membranes exhibit high proton conductivity and selectivity. CS‐based hybrid membranes show low methanol permeability.

show abstract

Section: Highlightsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Carbon nanocomposites self‐assembly UiO‐66‐doped chitosan proton exchange membrane with enhanced proton conductivity

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Increasing concerns over environmental pollution and depletion of fossil fuel have encouraged the development of sustainable, cost‐effective and enviromentally friendly energy resources . Fuel cells can transform chemical energy stored in fuels directly into electrical energy, and they are more efficient than combustion engines due to the absence of friction .…”

Section: Introductionmentioning

confidence: 99%

“…However, it is very difficult to disperse carbon nanotube (CNT) homogeneously in the polymer matrix due to the strong Van der waals force; and an ionic channel can be formed in PEM due to the high electronic conductivity of CNT, which may lead to short‐circuiting in PEMFCs . To overcome these problems, Si, Ti, Zr, and phosphonate functionalized CNT are commonly used for modification of PEM . Recently, carbon nanomaterials (MWCNTs and fullerene) with sulfonic acid groups have been widely used in the fabrication of composite membranes .…”

Section: Introductionmentioning

confidence: 99%

Novel sulfonated multi‐walled carbon nanotubes filled chitosan composite membrane for fuel‐cell applications

Ahmed

Ali

Cai

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

In the present study, multi‐walled carbon nanotubes (MWCNTs) were sulfonated by 1,3‐propane sultone and distillation–precipitation polymerization, respectively, and then incorporated into chitosan (CS) to prepare CS/MWCNTs composite membranes for fuel cell applications. CS/MWCNTs membranes show better thermal and mechanical stability than pure CS membrane due to the strong electrostatic interaction between the SO3H groups of MWCNTs and the NH2 groups of CS, which can restrict the mobility of CS chain. The sulfonated MWCNTs provide efficient proton hopping sites (SO3H, SO3− …. 3+HN), thereby resulting in the formation of continuous proton conducting channels. The composite membranes with 5 wt % of MWCNTs modified by two different ways show a proton conductivity of 0.026 and 0.025 S·cm−1, respectively. In conclusion, CS/MWCNTs membrane is a promising proton exchange membrane for fuel‐cell applications. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47603.

show abstract

“…Chitosan (CS) is the product generated from the deacetylation of chitin, and has been extensively studied in the field of polymer electrolyte membranes because of the following benefits: (1) CS has many functional groups (e.g., NH 2 and OH) that easily allow chemical modification to tailor its properties for fuel cell application; (2) the hydrophilicity of CS is a desirable property for the ion transport under the condition of low humidity; (3) CS possesses high alcohol fuel barrier ability, which can decrease the fuel consumption and thus increase the fuel cell efficiency; and (4) CS is low cost, eco‐friendly, and abundant in environment. Moreover, when a CS membrane is swollen in water, the conduction of hydroxyl ions in it becomes possible because the amino groups of CS can be protonated and simultaneously leave OH − free.…”

Section: Introductionmentioning

confidence: 99%

Quaternized chitosan/functionalized carbon nanotubes composite anion exchange membranes

Jang

Chuang

Tsen

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

Natural alkaline polyelectrolyte chitosan has been considered to be a promising anion exchange membrane (AEM) material due to its low cost and easy quaternization. To further improve the ionic conductivity and mechanical property of quaternized chitosan (QCS), QCS functionalized carbon nanotubes (QCS@CNTs) were prepared and used as a novel nanofiller to modify the membrane matrix. The QCS coating layer on the surface of CNTs can not only improve the dispersion of CNTs and thus promote the load transfer from the QCS matrix to stiff CNTs, but also endow CNTs with a certain hydroxide ions exchange ability. The results show that the addition of QCS@CNTs slightly decreased the ionic conductivity of the composite membranes while the tensile strength and alkaline stability of these membranes were significantly improved, indicating the potential application of these composite membranes in AEM fuel cells. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47778.

show abstract

Novel composite polymer electrolyte membrane using solid superacidic sulfated zirconia - Functionalized carbon nanotube modified chitosan

Cited by 60 publications

References 52 publications

Carbon nanocomposites self‐assembly UiO‐66‐doped chitosan proton exchange membrane with enhanced proton conductivity

Carbon nanocomposites self‐assembly UiO‐66‐doped chitosan proton exchange membrane with enhanced proton conductivity

Novel sulfonated multi‐walled carbon nanotubes filled chitosan composite membrane for fuel‐cell applications

Quaternized chitosan/functionalized carbon nanotubes composite anion exchange membranes

Contact Info

Product

Resources

About