Synergistically coupling of 3D FeNi-LDH arrays with Ti3C2Tx-MXene nanosheets toward superior symmetric supercapacitor

Nano Energy, Год журнала: 2021, Номер 91, С. 106633 - 106633

Опубликована: Окт. 20, 2021

Язык: Английский

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Template ion-exchange synthesis of Co-Ni composite hydroxides nanosheets for supercapacitor with unprecedented rate capability

Chemical Engineering Journal, Год журнала: 2021, Номер 432, С. 134319 - 134319

Опубликована: Дек. 27, 2021

Язык: Английский

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Advanced hybrid supercapacitors assembled with CoNi LDH nanoflowers and nanosheets as high-performance cathode materials

Journal of Energy Storage, Год журнала: 2024, Номер 82, С. 110535 - 110535

Опубликована: Янв. 16, 2024

Язык: Английский

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Research progress of MXenes and layered double hydroxides for supercapacitors

Inorganic Chemistry Frontiers, Год журнала: 2023, Номер 10(15), С. 4358 - 4392

Опубликована: Янв. 1, 2023

In this study, the preparation methods of MXenes and layered dihydroxides (LDHs) are reviewed. addition, electrochemical performances for supercapacitors MXene/LDHs composites summarized in detail.

Язык: Английский

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Graphene Quantum Dots Pinned on Nanosheets‐Assembled NiCo‐LDH Hollow Micro‐Tunnels: Toward High‐Performance Pouch‐Type Supercapacitor via the Regulated Electron Localization

Small, Год журнала: 2022, Номер 18(20)

Опубликована: Апрель 18, 2022

A combined delicate micro-/nano-architecture and corresponding surface modification at the nanometer level can co-tailor physicochemical properties to realize an advanced supercapacitor electrode material. Herein, nanosheets-assembled nickel-cobalt-layered double hydroxide (NiCo-LDH) hollow micro-tunnels strongly coupled with higher-Fermi-level graphene quantum dots (GQDs) are reported. The unique structure endows electrolyte accessible more electroactive sites, while 2D nanosheets have excellent chemistry, which favors rapid ion/electron transfer, synergistically resulting in super-capacitive activities. experimental density functional theory calculations recognize that such a precise decoration generally tunes charge distribution near-surface due Fermi-level difference of two components, thus regulating electron localization, decorating conductive GQDs co-improves mobility, affording superior capacitive response integrity. as-acquired GQDs@LDH-2 yields capacitance reaching ≈1628 F g-1 1 durable cycling longevity (86.2% retention after 8000 cycles). When reduced oxide-based negative electrode, hybrid device unveils impressive energy/power (46 Wh kg-1 / 7440 W ); moreover, flexible pouch-type be constructed based on this system, holds high mechanical stable energy power output various situations, showcasing superb application prospects.

Язык: Английский

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Strongly coupled carbon quantum dots/NiCo-LDHs nanosheets on carbon cloth as electrode for high performance flexible supercapacitors

Applied Surface Science, Год журнала: 2022, Номер 591, С. 153161 - 153161

Опубликована: Март 26, 2022

Язык: Английский

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3D hierarchical oxygen-deficient AlCoNi-(oxy)hydroxides/N-doped carbon hybrids enable efficient battery-type asymmetric supercapacitor

Journal of Energy Chemistry, Год журнала: 2022, Номер 72, С. 416 - 423

Опубликована: Май 7, 2022

Язык: Английский

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An Electrochromic Nickel Phosphate Film for Large-Area Smart Window with Ultra-Large Optical Modulation

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Янв. 11, 2023

Exploring materials with high electrochemical activity is of keen interest for electrochemistry-controlled optical and energy storage devices. However, it remains a great challenge transition metal oxides to meet this feature due their low electron conductivity insufficient reaction sites. Here, we propose type phosphate (NiHPO4·3H2O, NHP) by facile scalable electrodeposition method, which can achieve the capability efficient ion accommodation injection/extraction electrochromic applications. Specifically, NHP film an ultra-high transmittance (approach 100%) achieves large modulation (90.8% at 500 nm), coloration efficiency (75.4 cm2 C-1 specific capacity 47.8 mAh g-1 0.4 A g-1. Furthermore, transformation mechanism upon systematically elucidated using in situ ex techniques. Ultimately, large-area smart window 100 constructed based on electrode, displaying superior performance regulating natural light storing electrical charges. Our findings may open up new strategies developing advanced windows.

Язык: Английский

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Insights on Ni-based layered double hydroxides for electrochemical supercapacitors: Underlying aspects in rational design and structural evolution

Journal of Energy Storage, Год журнала: 2023, Номер 72, С. 108305 - 108305

Опубликована: Июль 12, 2023

Язык: Английский

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Oxygen functionalization‐assisted anionic exchange toward unique construction of flower‐like transition metal chalcogenide embedded carbon fabric for ultra‐long life flexible energy storage and conversion

Carbon Energy, Год журнала: 2023, Номер 6(1)

Опубликована: Май 19, 2023

Abstract The metal‐organic framework (MOF) derived Ni–Co–C–N composite alloys (NiCCZ) were “embedded” inside the carbon cloth (CC) strands as opposed to popular idea of growing them upward realize ultrastable energy storage and conversion application. NiCCZ was then oxygen functionalized, facilitating next step stoichiometric sulfur anion diffusion during hydrothermal sulfurization, generating a flower‐like metal hydroxysulfide structure (NiCCZOS) with strong partial implantation CC. Thus obtained NiCCZOS shows an excellent capacity when tested supercapacitor electrode in three‐electrode configuration. Moreover, paired biomass‐derived nitrogen‐rich activated carbon, asymmetric device almost 100% retention even after 45,000 charge–discharge cycles remarkable density (59.4 Wh kg –1 /263.8 µWh cm –2 ) owing uniquely designed cathode. Furthermore, same performed bifunctional water‐splitting electrocatalyst overpotential 271 mV for evolution reaction (OER) 168.4 hydrogen (HER) at 10 mA −2 current along 30 h unhinged chronopotentiometric stability performance both HER OER. Hence, unique chalcogenide electrode/substrate configuration has been proposed highly stable material flexible applications.

Язык: Английский

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