Material and configuration design strategies towards flexible and wearable power supply devices: a review

Gao, Jiyuan; Shang, Kezheng; Ding, Yichun; Wen, Zhenhai

doi:10.1039/d0ta11260g

Cited by 48 publications

(19 citation statements)

References 211 publications

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“…The main reason for such relies on accessibility of ions in deeper cavities of the PPy films. Therefore, in most cases PPy composites with carbon materials as well others are applied [ 53 ].…”

Section: Resultsmentioning

confidence: 99%

Polypyrrole with Phosphor Tungsten Acid and Carbide-Derived Carbon: Change of Solvent in Electropolymerization and Linear Actuation

et al. 2021

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Linear actuators based on polypyrrole (PPy) are envisaged to have only one ion that triggers the actuation direction, either at oxidation (anion-driven) or at reduction (cation-driven). PPy doped with dodecylbenzenesulfonate (PPy/DBS) is the most common applied conducting polymer having cation-driven actuation in aqueous solvent and mainly anion-driven actuation in an organic electrolyte. It is somehow desired to have an actuator that is independent of the applied solvent in the same actuation direction. In this research we made PPy/DBS with the addition of phosphorus tungsten acid, forming PPyPT films, as well with included carbide derived carbon (CDC) resulting in PPyCDC films. The solvent in electropolymerization was changed from an aqueous ethylene glycol mixture to pure EG forming PPyPT-EG and PPyCDC-EG composites. Our goal in this study was to investigate the linear actuation properties of PPy composites applying sodium perchlorate in aqueous (NaClO4-aq) and propylene carbonate (NaClO4-PC) electrolytes. Cyclic voltammetry and square potential steps in combination with electro-chemo-mechanical-deformation (ECMD) measurements of PPy composite films were performed. The PPyPT and PPyCDC had mixed ion-actuation in NaClO4-PC while in NaClO4-aq expansion at reduction (cation-driven) was observed. Those novel PPy composites electropolymerized in EG solvent showed independently which solvent applied mainly expansion at reduction (cation-driven actuator). Chronopotentiometric measurements were performed on all composites, revealing excellent specific capacitance up to 190 F g−1 for PPyCDC-EG (best capacitance retention of 90% after 1000 cycles) and 130 F g−1 for PPyPT-EG in aqueous electrolyte. The films were characterized by scanning electron microscopy (SEM), Raman, Fourier-transform infrared (FTIR) and energy dispersive X-ray spectroscopy (EDX).

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Section: Resultsmentioning

confidence: 99%

Polypyrrole with Phosphor Tungsten Acid and Carbide-Derived Carbon: Change of Solvent in Electropolymerization and Linear Actuation

et al. 2021

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“…Flexible materials that can provide energy storage have been the focus of research in recent decades, with envisaged multifunctional purposes [ 50 , 51 ]. In general, carbon-related materials are applied due to their high capacitance and mesoporous characteristics, while conducting polymers are pseudo-capacitors mostly applied in combination with carbon materials [ 52 ] or with inorganic salts such as POM [ 10 ].…”

Section: Resultsmentioning

confidence: 99%

Role of Polyoxometalate Contents in Polypyrrole: Linear Actuation and Energy Storage

et al. 2022

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A combination of polyoxometalates with polypyrrole is introduced in this work. Our goal was to include phosphotungstic acid (PTA) in different molar concentrations (0.005, 0.01, and 0.05 M) in the electropolymerization of pyrrole doped with dodecylbenzene sulfonate (DBS) and phosphotungstinates (PT), forming PPy/DBS-PT films. Scanning electron microscopy (SEM) revealed that the PPy/DBS-PT films became denser and more compact with increasing PTA concentrations. The incorporation of PT in PPy/DBS was analyzed using Fourier-transform infrared (FTIR) and energy dispersive X-ray (EDX) spectroscopy. The linear actuation in cyclic voltammetry and potential square wave steps in an organic electrolyte revealed increasing mixed actuation, with major expansion upon oxidation found for PPy/DBS-PT films with a PTA concentration of 0.005 M. Best results of a strain of 12.8% and stress at 0.68 MPa were obtained for PPy/DBS-PT (0.01 M). The PPy/DBS-PT films polymerized in the presence of 0.05 M of PTA and showed main expansion upon reduction, changing the actuation direction. Chronopotentiometric measurements of PPy/DBS-PT samples were conducted to determine the specific capacitance optimal for a 0.01 M PTA concentration in the range of 80 F g−1 (±0.22 A g−1).

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“…1,2 Supercapacitors are positioned to overcome the shortcomings, which possess high power density and long lifespan but suffer from limited energy density. 3,4 Metal-ion hybrid capacitors (MIHCs) that integrate a battery-type electrode and a capacitive electrode can take advantages of batteries and supercapacitors, representing a promising candidate for next-generation energy storage devices. 5 Of MIHCs, the aqueous Zn-ion hybrid capacitors (ZIHCs) have attracted considerable attention because of their high capacity, excellent cycling stability, abundant resources, nontoxicity and safety.…”

Section: Introductionmentioning

confidence: 99%

N, P, and S co-doped 3D porous carbon-architectured cathode for high-performance Zn-ion hybrid capacitors

et al. 2022

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Material and configuration design strategies towards flexible and wearable power supply devices: a review

Abstract: Flexible and wearable sensors have shown great potential in tremendous applications such as human health monitoring, smart robots, and human–machine interfaces, yet the lack of suitable flexible power supply devices...

Cited by 48 publications

References 211 publications

Polypyrrole with Phosphor Tungsten Acid and Carbide-Derived Carbon: Change of Solvent in Electropolymerization and Linear Actuation

Polypyrrole with Phosphor Tungsten Acid and Carbide-Derived Carbon: Change of Solvent in Electropolymerization and Linear Actuation

Role of Polyoxometalate Contents in Polypyrrole: Linear Actuation and Energy Storage

N, P, and S co-doped 3D porous carbon-architectured cathode for high-performance Zn-ion hybrid capacitors

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