Enhancing the ionic conductivity and mechanical properties of zwitterionic polymer electrolytes by betaine-functionalized graphene oxide for high-performance and flexible supercapacitors

Tseng, Li-Hsiang; Wang, Po-Hsin; Li, Weicheng; Lin, Chen-Hsueh; Wen, Ten‐Chin

doi:10.1016/j.jpowsour.2021.230624

Cited by 13 publications

(3 citation statements)

References 31 publications

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“…As depicted in Figure 4 a, it was found that the absorption peak at 3374 cm −1 belonged to the –OH stretching vibration peak on the surface of GO, the absorption peak at 1225 cm −1 corresponded to the stretching vibration peak of the C–O single bond of GO and the absorption peak at 1054 cm −1 was the characteristic peaks of GO epoxy group. The absorption peaks at 1617 cm −1 and 1717 cm −1 corresponded to the stretching vibration of the unoxidized carbon-carbon double bond (C=C) and the C=O of the carbonyl and carboxyl groups at the edge of GO, respectively [ 25 ]. After the grafting modification of GO by CAB, the absorption peak of hydroxyl at 3374 cm −1 basically disappeared, and a new absorption peak of secondary amide appeared at 3278 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

Preparation of a CAB−GO/PES Mixed Matrix Ultrafiltration Membrane and Its Antifouling Performance

et al. 2023

Membranes

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Serious membrane fouling has limited the development of ultrafiltration membrane technology for water purification. Synthesis of an ultrafiltration membrane with prominent anti-fouling ability is of vital importance. In this study, CAB−GO composite nanosheets were prepared by grafting graphene oxide (GO) with a zwitterionic material cocamidopropyl betaine (CAB) with strong antifouling properties. Anti-fouling CAB−GO/PES mixed matrix ultrafiltration membrane (CGM) was prepared by the phase inversion method with polyethersulfone (PES). Due to its electrostatic interaction, the interlayer distance between CAB−GO nanosheets was increased, and the dispersibility of GO was improved to large extent, thereby effectively avoiding the phenomenon of GO agglomeration in organic solvents. Based on the improvement of the surface porosity and surface hydrophilicity of the CAB−GO/PES mixed matrix membrane, the pure water flux of CGM−1.0 can reach 461 L/(m2·h), which was 2.5 times higher than that of the original PES membrane, and the rejection rates toward BSA and HA were above 96%. Moreover, when the content of CAB−GO was 0.1 wt%, the prepared CAB−GO/PES membrane exhibited very high BSA (99.1%) and HA (98.1%) rejection during long-term operation, indicating excellent anti-fouling ability.

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Section: Resultsmentioning

confidence: 99%

Preparation of a CAB−GO/PES Mixed Matrix Ultrafiltration Membrane and Its Antifouling Performance

et al. 2023

Membranes

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“…That said, if i p and v are linear, it implies that the reaction is surface-commanded, similar to capacitive behavior. If i p and ν 1/2 are linear, it implies that the reaction is commanded by the diffusion procure . Obviously, the peak current on the CV curve of both positive and negative electrodes varies linearly with the scanning rate, indicating that the redox procure is confined by surface-controlled reactions.…”

Section: Resultsmentioning

confidence: 99%

Green and Sustainable Hydroxyquinone Molecule Electrodes Prepared for Efficient Energy Storage

Zhou

et al. 2023

ACS Appl. Energy Mater.

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Organic electrode materials have been widely investigated for their high theoretical capacity, low toxicity, renewability, inexpensive cost, and chemical/structural tunable advantages. Herein, 2-hydroxyanthraquinone (HAQ)-reduced graphene oxide (rGO) hydrogel with a hierarchical porous structure was prepared to achieve more efficient energy storage. The optimal HAQ-rGO(0.5:1) composite can afford a high capacity of 325 F g–1 at 1 A g–1 and a good rate capability corresponding to 96.5% retention of the original after 10,000 cycles in a 1M H2SO4 electrolyte. Given the density functional theory (DFT) calculation, the binding energy of HAQ on rGO and the charge density difference of the stacking site under different adsorption directions were estimated. The cooperative effect is essential to boost the electrochemical behavior of supercapacitors. The constructed asymmetric supercapacitor (HAQ-rGO//BDTD-rGO) has a most energy density of 17.7 Wh kg–1, 0.7 kW kg–1, a Coulomb efficiency of 99%, and a long-term cycling stability (93% capacitance retention even after 10,000 cycles of 5 A g–1). In addition, 104 LEDs are lit in series with two HAQ-rGO//BDTD-rGO devices.

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“…In recent years, zwitterions and zwitterionic polymers have become a frequently studied class of materials due to their strong antifouling, 1,2 ion dissociation enhancement, [3][4][5][6] and tunable properties. [7][8][9][10] These characteristics arise from the electrostatic properties of the zwitterion's dual-charged moieties, enabling the molecules to form tight, highly ordered water layers, 10 and simultaneously push or pull ions in solution.…”

Section: Introductionmentioning

confidence: 99%

Prediction of zwitterion hydration and ion association properties using machine learning

Christiansen

Mehraeen

2023

Soft Matter

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Enhancing the ionic conductivity and mechanical properties of zwitterionic polymer electrolytes by betaine-functionalized graphene oxide for high-performance and flexible supercapacitors

Cited by 13 publications

References 31 publications

Preparation of a CAB−GO/PES Mixed Matrix Ultrafiltration Membrane and Its Antifouling Performance

Preparation of a CAB−GO/PES Mixed Matrix Ultrafiltration Membrane and Its Antifouling Performance

Green and Sustainable Hydroxyquinone Molecule Electrodes Prepared for Efficient Energy Storage

Prediction of zwitterion hydration and ion association properties using machine learning

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