Self-charging V2CTx/CNT-based zinc ion micro-supercapacitor for wearable electronics

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 490, P. 151589 - 151589

Published: April 23, 2024

Language: Английский

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Enhancement of zinc-ion storage capability by synergistic effects on dual-ion adsorption in hierarchical porous carbon for high-performance aqueous zinc-ion hybrid capacitors

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 667, P. 700 - 712

Published: April 17, 2024

Language: Английский

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Multiple Redox‐Active Cyano‐Substituted Organic Compound Integrated with MXene Nanosheets for High‐Performance Flexible Aqueous Zn‐Ion Battery

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(25)

Published: Feb. 4, 2024

Abstract An eco‐friendly organic compound, with rich redox sites, considered a promising cathode material for aqueous zinc‐ion batteries (AZIBs). Despite its potential, limited specific capacity and cycle instability impede practical application. Herein, an hexaazatriphenylene hexacarbonitrile (6CN‐HAT), is designed π – conjugated aromatic structure, integrated MXene nanosheets to construct flexible self‐supporting electrode (6CN‐HAT@MXene). Ex‐situ characterizations theoretical calculations verify that the charge storage mechanism predominantly involves coordination non‐coordination reactions between reactive C═N ─CN sites cations. The introduction of not only bolster stability electronic conductivity 6CN‐HAT@MXene but also expose additional active cation coordination. As in AZIBs, exhibits outstanding discharge 413 mAh g −1 at 0.05 A . Remarkably, even after 5000 cycles 5 , retained 91%. Furthermore, based on electrode, micro‐zinc‐ion high area 257.4 mF cm −2 prepared using laser cutting technology, highlighting potential future applications portable wearable devices.

Language: Английский

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Tailoring ion-accessible pores of robust nitrogen heteroatomic carbon nanoparticles for high-capacity and long-life Zn-ion storage

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 104, P. 114509 - 114509

Published: Nov. 5, 2024

Language: Английский

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Regulating medical wasted cotton into porous carbons for high-performance supercapacitors and zinc-ion hybrid capacitors

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 599, P. 234146 - 234146

Published: Feb. 19, 2024

Language: Английский

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Self-templating synthesis strategy of oxygen-doped carbon from unique wasted pulping liquid directly as a cathode material for high-performance zinc ion hybrid capacitors

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 675, P. 569 - 579

Published: July 7, 2024

Language: Английский

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High-performance Ti3C2Tx achieved by polyaniline intercalation and gelatinization as a high-energy cathode for zinc-ion capacitor

Nano Research, Journal Year: 2024, Volume and Issue: 17(6), P. 5305 - 5316

Published: March 7, 2024

Language: Английский

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Modulating inner Helmholtz layer by electrocatalytically sieving [Zn(H2O)6]2+ for 10000-cycle zinc-ion hybrid capacitors under extremely harsh conditions

Energy storage materials, Journal Year: 2024, Volume and Issue: 70, P. 103463 - 103463

Published: May 6, 2024

Language: Английский

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Unlocking the Critical Role of Cations Doping in MnO₂ Cathode with Enhanced Reaction Kinetics for Aqueous Zinc Ion Batteries

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Abstract MnO 2 ‐based cathode aqueous rechargeable zinc‐ion batteries (ZIBs) have favorable sustainability characteristics and are considered potential candidates for low‐cost effective, high‐safety energy storage systems. Nevertheless, the development of them has been hampered by unstable electrode structures ambiguous charge mechanisms. Herein, role doping Fe 3+ Co 2+ into δ‐MnO materials (FMO, CMO) is comprehensively probed working mechanism Zn//FMO, Zn//CMO studied using in situ ex characterization, electrochemical analysis, theoretical calculations. Metal cations can partially replace Mn to form M─O bonds enhance structural stability as well redox activity . It found that effectively modulates interaction between Zn /H + structure inhibits formation ZnMn O 4 (ZMO) by‐products confers fast diffusion ability The reactions FMO CMO mainly via H /Zn intercalation/deintercalation accompanied OTF‐base‐like double hydroxide x (OTF) y (OH) 2x‐y ‐nH (Z‐LDH) deposition/dissolution. This research enriches fundamental comprehension ZIBs reveals way modify electrodes performance enhancement.

Language: Английский

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Design Principles for Gradient Porous Carbon on Aqueous Zinc-Ion Hybrid Capacitors: A Combined Molecular Dynamic and Machine Learning Study

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 4, 2025

Gradient porous carbon has become a potential electrode material for energy storage devices, including the aqueous zinc-ion hybrid capacitor (ZIHC). Compared with sufficient studies on fabrication of ZIHCs high electrochemical performance, there is still lack in-depth understanding underlying mechanisms gradient structure storage, especially synergistic effect ultramicropores (<1 nm) and micropores (1-2 nm). Here, we report design principle used ZIHC based data-mining machine learning (ML) method. It clarified that combination 0.6-0.9 nm ultramicropore 1.6 micropore achieves highest specific capacity. Molecular dynamic simulation was further employed to investigate electric double-layer structures in several kinds electrified electrode/electrolyte interface. found Zn

Language: Английский

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