Juglone bonded carbon nanotubes interweaving cellulose nanofibers as self-standing membrane electrodes for flexible high energy supercapacitors

Fang, Dianlei; Zhou, Jie; Sheng, Lingyan; Tang, Weihua; Tang, Jian

doi:10.1016/j.cej.2020.125325

Cited by 50 publications

(28 citation statements)

References 47 publications

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“…By interweaving with BCNF and anchoring redox juglone on CNTs, Tang and co‐workers fabricated a flexible juglone/CNTs/BCNF film electrode. [ 157 ] The flexible chemical electrode of juglone/CNTs/BCNF exhibited good electrochemical performance due to the enhanced charge transfer. The specific capacitance (461.8 F g −1 ) was more than five times higher than that of CNTs/BC electrode.…”

Section: Supercapacitorsmentioning

confidence: 99%

Advanced Nanocellulose‐Based Composites for Flexible Functional Energy Storage Devices

et al. 2021

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With the increasing demand for wearable electronics (such as smartwatch equipment, wearable health monitoring systems, and human–robot interface units), flexible energy storage systems with eco‐friendly, low‐cost, multifunctional characteristics, and high electrochemical performances are imperative to be constructed. Nanocellulose with sustainable natural abundance, superb properties, and unique structures has emerged as a promising nanomaterial, which shows significant potential for fabricating functional energy storage systems. This review is intended to provide novel perspectives on the combination of nanocellulose with other electrochemical materials to design and fabricate nanocellulose‐based flexible composites for advanced energy storage devices. First, the unique structural characteristics and properties of nanocellulose are briefly introduced. Second, the structure–property–application relationships of these composites are addressed to optimize their performances from the perspective of processing technologies and micro/nano‐interface structure. Next, the recent specific applications of nanocellulose‐based composites, ranging from flexible lithium‐ion batteries and electrochemical supercapacitors to emerging electrochemical energy storage devices, such as lithium‐sulfur batteries, sodium‐ion batteries, and zinc‐ion batteries, are comprehensively discussed. Finally, the current challenges and future developments in nanocellulose‐based composites for the next generation of flexible energy storage systems are proposed.

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Section: Supercapacitorsmentioning

confidence: 99%

Advanced Nanocellulose‐Based Composites for Flexible Functional Energy Storage Devices

et al. 2021

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“…Generally, in charging/discharging process, higher b‐value presents faster reaction kinetics, which keeps steady capacity output under increasing current impact. [ 42 ] On the other hand, balanced redox dynamics (similar b‐value of oxidation and reduction) endow electrodes with high redox reversibility in long‐term cycle life. [ 43 ] The P3Q's slower and unbalanced ionic diffusion (b = 0.77/0.69 for O 1 /R 1 , 0.78/0.87 for O 2 /R 2 ) may cause poorer rate and cycle performance in contrast with P3Q‐t ( b = 0.88/0.84 for O/R).…”

Section: Resultsmentioning

confidence: 99%

Manipulating Polymer Configuration to Accelerate Cation Intercalation Kinetics for High‐Performance Aqueous Zinc‐Ion Batteries

Wang

Tang

2022

Adv Funct Materials

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Aqueous zinc-ion batteries (ZIBs) with safety and cost superiority are becoming promising for energy storage; meanwhile, organic electrodes are attracting considerable interest. The development of organic ZIBs lies in the solution of challenging issues on impeded Zn 2+ interfacial diffusion and the corresponding sluggish reaction kinetics. Herein, triquinoxalinylene (3Q) based homopolymer (P3Q) and triazine-linked 3Q polymer (P3Q-t) with enlarged conjugated planes are designed and prepared to reveal the impact of molecular configuration on Zn 2+ transfer and coordination dynamics. Their ZIB performance and ion intercalation mechanism are systematically investigated by structural characterization, electrochemical measurement, and theoretical calculation. Specifically, P3Q shows interactions with both Zn 2+ and H + , while P3Q-t is discovered to selectively coordinate only with Zn 2+ . Moreover, P3Q-t exhibits high conjugated planarity and electronegative fused-rings pathways due to both intermolecular and intramolecular effects, leading to faster reaction dynamics and low Zn 2+ transfer resistance. P3Q-t affords a high capacity of 237 mAh g -1 at 0.3 A g -1 . More importantly, such capacity can be retained for 45% at 15 A g -1 and an average 81% of capacity retention is achieved over 1500 cycles.

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“…In addition, the electrical conductivity of Ag@np-Ni x Co 1-x (OH) 2 (250.0 S cm −1 ) decreased as compared with Ag@np-(Ni x Co 1-x ) 3 P (357.1 S cm −1 ; Table S1, Supporting Information) due to the surface oxidation, but such conductivity is enough as a self-supporting electrode. [36,37] Thus, the Ag@np-Ni x Co 1-x (OH) 2 electrode is described as the amorphous Ni x Co 1-x (OH) 2 shell layer with atomic Ag dopant on the nanoporous bimetallic phosphide.…”

Section: Resultsmentioning

confidence: 99%

Atomic Engineering Catalyzed Redox Kinetics of Ni_xCo_1‐x(OH)₂ on Nanoporous Phosphide Electrode for Efficient Ni‐Zn Batteries

Tian

Peng

Luo

et al. 2022

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Aqueous nickel‐zinc (Ni–Zn) batteries with excellent safety and environmental benignity are promising candidates for sustainable energy storage. However, the inferior conductivity and inevitable phase transition of trditional Ni‐based cathodes limit the redox kinetics and lead to restricted electrode specific capacity and device energy density. Here, a NixCo1‐x(OH)2 electrode doped with Pd, Ag, and Au atoms is constructed for catalyzing the redox kinetics on the conductive nanoporous phosphide. Density functional theory calculations and experimental results reveal that the introduction of the Ag atomic dopants can effectively modulate the electron structure and optimize the OH− adsorption energy, thereby accelerating the catalyzed redox kinetics of NixCo1‐x(OH)2 by the facilitated charge transfer at the active sites around metal dopants. Consequently, the assembled Ni–Zn battery delivers an ultrahigh power density of 7.85 W cm−3 and energy density of 49.53 mW h cm−3, with a long‐term cycling stability. The cooperation of atomic catalysis and redox kinetics will inspire more exploration of efficient energy materials and devices.

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Juglone bonded carbon nanotubes interweaving cellulose nanofibers as self-standing membrane electrodes for flexible high energy supercapacitors

Cited by 50 publications

References 47 publications

Advanced Nanocellulose‐Based Composites for Flexible Functional Energy Storage Devices

Advanced Nanocellulose‐Based Composites for Flexible Functional Energy Storage Devices

Manipulating Polymer Configuration to Accelerate Cation Intercalation Kinetics for High‐Performance Aqueous Zinc‐Ion Batteries

Atomic Engineering Catalyzed Redox Kinetics of Ni_xCo_1‐x(OH)₂ on Nanoporous Phosphide Electrode for Efficient Ni‐Zn Batteries

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Juglone bonded carbon nanotubes interweaving cellulose nanofibers as self-standing membrane electrodes for flexible high energy supercapacitors

Cited by 50 publications

References 47 publications

Advanced Nanocellulose‐Based Composites for Flexible Functional Energy Storage Devices

Advanced Nanocellulose‐Based Composites for Flexible Functional Energy Storage Devices

Manipulating Polymer Configuration to Accelerate Cation Intercalation Kinetics for High‐Performance Aqueous Zinc‐Ion Batteries

Atomic Engineering Catalyzed Redox Kinetics of NixCo1‐x(OH)2 on Nanoporous Phosphide Electrode for Efficient Ni‐Zn Batteries

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Atomic Engineering Catalyzed Redox Kinetics of Ni_xCo_1‐x(OH)₂ on Nanoporous Phosphide Electrode for Efficient Ni‐Zn Batteries