A low cost, wide temperature range, and high energy density flexible quasi-solid-state zinc-ion hybrid supercapacitors enabled by sustainable cathode and electrolyte design

Yang, Guoshen; Huang, Jian; Wan, Xuhao; Zhu, Yachao; Liu, Binbin; Wang, Jiawei; Hiralal, Pritesh; Fontaine, Olivier; Guo, Yuzheng; Zhou, Hang

doi:10.1016/j.nanoen.2021.106500

Cited by 58 publications

(41 citation statements)

References 60 publications

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“…The unique structure provided sufficient active sites for charge transfer and storage. 6,42,43 Moreover, with increasing mass content of the CNTs (Fig. S6a†), the conductivity of NiMOF/CNTs 180 measured using the standard four-point probe head improved.…”

Section: Resultsmentioning

confidence: 98%

CNTs support 2D NiMOF nanosheets for asymmetric supercapacitors with high energy density

Liao

Liu

et al. 2022

Dalton Trans.

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Section: Resultsmentioning

confidence: 98%

CNTs support 2D NiMOF nanosheets for asymmetric supercapacitors with high energy density

Liao

Liu

et al. 2022

Dalton Trans.

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“…Moreover, the quasi-solid-state ZHSC with the as-obtained hydrogel electrolyte exhibits a high capacity (56.1 mAh g –1 ), excellent rate capability, and long-term cycling stability (95.3% retention of 5000 cycles) . Fontaine et al constructed a poly(vinyl alcohol)/montmorillonite/Zn(ClO 4 ) 2 hybrid hydrogel electrolyte, which delivers a desirable capacity and long-term cycling durability in ZHSC . Xu et al employed the sodium alginate to design the hydrogel electrolyte for ZHSC, which exhibits an ultrahigh energy density of 286.6 Wh kg –1 , superior capacity retention, and excellent electrochemical properties under mechanical deformation (e.g., bending and compressing states) .…”

Section: Introductionmentioning

confidence: 99%

“…17 Fontaine et al constructed a poly(vinyl alcohol)/montmorillonite/Zn(ClO 4 ) 2 hybrid hydrogel electrolyte, which delivers a desirable capacity and long-term cycling durability in ZHSC. 18 Xu et al employed the sodium alginate to design the hydrogel electrolyte for ZHSC, which exhibits an ultrahigh energy density of 286.6 Wh kg −1 , superior capacity retention, and excellent electrochemical properties under mechanical deformation (e.g., bending and compressing states). 19 Despite the noteworthy progress in fabricating the polymer hydrogel electrolytes, crucial issues such as unsatisfied ionic conductivity, insufficient mechanical strength, and limited electrochemical stability still severely impeded the prototype electrolytes from real practical use.…”

Section: Introductionmentioning

confidence: 99%

Natural Polysaccharide Strengthened Hydrogel Electrolyte and Biopolymer Derived Carbon for Durable Aqueous Zinc Ion Storage

Liu

et al. 2022

ACS Appl. Mater. Interfaces

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Aqueous zinc-ion hybrid supercapacitors (ZHSCs) represent one of the current research subjects because of their flame retardancy, ease of manufacturing, and exceptional roundtrip efficiency. With the evolution into real useful energy storage cells, the bottleneck factors of the corrosion and dendrite growth problems must be properly resolved for largely boosting their cycling life and energy efficiency. Herein, a natural polysaccharide strengthened hydrogel electrolyte (denoted as PAAm/agar/Zn(CF3SO3)2) was engineered by designing an asymmetric dual network of covalently cross-linked polyacrylamide (denoted as PAAm) and physically cross-linked loose polysaccharide (e.g., agar) followed by intense uptake of Zn(CF3SO3)2 aqueous electrolyte. In this polymeric matrix, the PAAm chains are responsible for constructing the soft domains to immobilize the water molecules, and the agar component boosts the mechanical performance (by using its inherent reversible sacrificial bonds) and favors the electrolyte ion transport. Due to these reasons, the as-designed hydrogel electrolyte effectively inhibits the zinc dendrite growth, realizes the uniform Zn deposition, and affords a satisfactory ionic conductivity of 1.55 S m–1, excellent tensile strength (78.9 kPa at 507.7% stretchable), and high compression strength (118.0 kPa at 60.0% strain). Additionally, a biopolymer-derived N-doped carbon microsphere cathode material with a highly interconnected porous carbonaceous network (denoted as NC) was also synthesized, which delivers a high capacity of 92.8 mAh g–1, along with superb rate capability and long duration cycling lifespan (95.4% retention for 10000 cycles) in the aqueous Zn//NC ZHSC. More notably, with integrated merits of the PAAm/agar/Zn(CF3SO3)2 hydrogel electrolyte and NC, the as-built quasi-solid-state ZHSC achieves a high specific capacity of 73.4 mAh g–1 and superior energy density of 61.3 Wh kg–1 together with excellent cycling stability for 10000 cycles. This work demonstrated favorable practicability in the structural design of the hydrogel electrolytes and electrode materials for advanced ZHSC applications.

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“…Due to the excellent biocompatibility and flexibility, conductive hydrogels have aroused extensive attention in wearable sensors, 1–6 electronic skins, 7,8 energy storage devices, 9,10 and so forth. As the high water content makes the hydrogels easy to freeze at low temperature, their mechanical and conductive performance will thus be seriously affected.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐stretchable, anti‐freezing conductive hydrogels crosslinked by strong hydrogen bonding for flexible sensors

Yu-rong

et al. 2022

Journal of Polymer Science

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Conductive hydrogel has shown unparalleled potential in flexible electronics. However, water-based hydrogels will inevitably face deteriorated mechanical strength and ionic transport ability in low temperature, which may severely hinder their wide-range application. To address the problem, we herein introduced a natural zwitterionic osmolyte (proline) and ammonium chloride (NH 4 Cl) as the anti-freezing agent into a physically cross-linked polyvinylpyrrolidone (PVP)/polyacrylamide (PAAm) hydrogel (PA gel), as inspired by the nature-gifted anti-freezing ability. The resulting conductive hydrogel demonstrated high stretchability (up to 3305%), and excellent ion-conductivity (up to 11.8 S/m) and could withstand a low temperature (À40 C). Moreover, the gelbased sensor showed sensitive dynamic response to different tensile rates and tensile strain. It is expected that the plant-inspired anti-freezing hydrogel will provide more possibilities for the application in flexible sensors.

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A low cost, wide temperature range, and high energy density flexible quasi-solid-state zinc-ion hybrid supercapacitors enabled by sustainable cathode and electrolyte design

Cited by 58 publications

References 60 publications

CNTs support 2D NiMOF nanosheets for asymmetric supercapacitors with high energy density

CNTs support 2D NiMOF nanosheets for asymmetric supercapacitors with high energy density

Natural Polysaccharide Strengthened Hydrogel Electrolyte and Biopolymer Derived Carbon for Durable Aqueous Zinc Ion Storage

Ultra‐stretchable, anti‐freezing conductive hydrogels crosslinked by strong hydrogen bonding for flexible sensors

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