Improvement of Hybrid Electrode Material Synthesis for Energy Accumulators Based on Carbon Nanotubes and Porous Structures

Micromachines, Год журнала: 2023, Номер 14(7), С. 1288 - 1288

Опубликована: Июнь 23, 2023

Carbon materials are promising for use as electrodes supercapacitors and lithium-ion batteries due to a number of properties, such non-toxicity, high specific surface area, good electronic conductivity, chemical inertness, wide operating temperature range. Carbon-based electrodes, with their characteristic power cyclic stability, can be used new generation consumer electronics, biomedical devices hybrid electric vehicles. However, most carbon materials, low electrical conductivity insufficient diffusion electrolyte ions in complex micropores, have energy density limitations these pores diffusion. This work focuses on the optimization material based porous nanotubes by mechanical mixing. The purpose this is gain knowledge about effect composition its capacitance. study taken basis nanotubes. Electrodes made were an object research. Porous or nitrogen-containing (combined single-, double-, multi-layer (single-layer nanotubes, bilayer multilayer nanotubes) create material. catalytic vapor deposition synthesis parameters, flow rate methane-to-hydrogen ratio, well type system structure was investigated. Two types catalysts Mo12O28 (μ2-OH)12{Co(H2O)3}4 prepared precipitation combustion. resulting tested lithium ion intercalation. carbon/carbon 95:5% found efficient compared nitrogen-doped 10%. synthesized using catalyst obtained selected additives mixing dispersion aqueous solution followed lyophilization remove water. When optimizing ratio components, effective carbon:carbon component determined.

Язык: Английский

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Recent Advances of Transition Metal Dichalcogenides‐Based Materials for Energy Storage Devices, in View of Monovalent to Divalent Ions

The Chemical Record, Год журнала: 2023, Номер 24(1)

Опубликована: Июнь 26, 2023

Abstract The fast growth of electrochemical energy storage (EES) systems necessitates using innovative, high‐performance electrode materials. Among the various EES devices, rechargeable batteries (RBs) with potential features like high density and extensive lifetime are well suited to meet rapidly increasing demands. Layered transition metal dichalcogenides (TMDs), typical two dimensional (2D) nanomaterial, considered auspicious materials for RBs because their layered structures large specific surface areas (SSA) that benefit quick ion transportation. This review summarizes highlights recent advances in TMDs improved performance RBs. Through novel engineering functionalization used RBs, we briefly discuss properties, characterizations, electrochemistry phenomena TMDs. We summarised multiple techniques, nanocomposites receives special attention. In conclusion, issues promising upcoming research openings developing TMDs‐based electrodes discussed.

Язык: Английский

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Trimming the Degrees of Freedom via a K+ Flux Rectifier for Safe and Long-Life Potassium-Ion Batteries

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

Опубликована: Авг. 18, 2023

High degrees of freedom (DOF) for K+ movement in the electrolytes is desirable, because resulting high ionic conductivity helps improve potassium-ion batteries, yet requiring support from highly free and flammable organic solvent molecules, seriously affecting battery safety. Here, we develop a flux rectifier to trim K ion's DOF 1 electrochemical properties. Although compromised rectifier, overall performance PIBs was improved. An oxidation stability improvement 4.0 5.9 V realized, formation dendrites dissolution cathodes were inhibited. Consequently, K||K cells continuously cycled over 3,700 h; K||Cu operated stably 800 cycles with Coulombic efficiency exceeding 99%; K||graphite exhibited high-capacity retention 74.7% after 1,500 cycles. Moreover, 3,4,9,10-perylenetetracarboxylic diimide more than 2,100 reached year-scale-cycling time. We fabricated 2.18 Ah pouch cell no significant capacity fading observed 100

Язык: Английский

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Anion-hosting cathodes for current and late-stage dual-ion batteries

Science China Chemistry, Год журнала: 2024, Номер 67(5), С. 1485 - 1509

Опубликована: Март 6, 2024

Anion-hosting cathodes capable of reversibly storing large-size anions play a leading role in dual-ion batteries (DIBs). The purpose the present review is to summarize most promising anion-hosting for current and late-stage DIBs. This first summarizes developments conventional graphite cathodes, especially latest advances graphite-related research. Next, organic anion storage are discussed, including aromatic amine polymers, heterocyclic bipolar compounds, all-carbon-unsaturated compounds. Then, focuses on conversion-type with high theoretical specific capacities. Finally, future research directions DIBs proposed.

Язык: Английский

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Kinetic-Thermodynamic Promotion Engineering toward High-Density Hierarchical and Zn-Doping Activity-Enhancing ZnNiO@CF for High-Capacity Desalination

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Март 4, 2024

Despite the promising potential of transition metal oxides (TMOs) as capacitive deionization (CDI) electrodes, actual capacity TMOs electrodes for sodium storage is significantly lower than theoretical capacity, posing a major obstacle. Herein, we prepared kinetically favorable Zn

Язык: Английский

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Enhancement in capacitive performance of Co3O4 with MnTiO3 via composite (MnTiO3/Co3O4) strategy developed by ultrasonication route

Journal of Alloys and Compounds, Год журнала: 2024, Номер 994, С. 174760 - 174760

Опубликована: Май 7, 2024

Язык: Английский

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Two-dimensional MXene based innovative electrode materials for supercapacitors: Recent advances and prospects

Fuel, Год журнала: 2024, Номер 377, С. 132783 - 132783

Опубликована: Авг. 16, 2024

Язык: Английский

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Multi-electron bipolar-type organic molecules for high-capacity dual-ion zinc batteries

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(20), С. 11867 - 11874

Опубликована: Янв. 1, 2024

An organic indanthrone molecule realizes alternate Zn 2+ /CF 3 SO − ion storage involving multi-electron transfer at bipolar-type redox-active centers, providing high capacity, high-voltage durability and energy density for dual-ion batteries.

Язык: Английский

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Bipolar conjugated microporous polymer anchoring graphene hybrids for high-performance zinc–organic batteries

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(21), С. 12818 - 12825

Опубликована: Янв. 1, 2024

A superior molecular design allows a bipolar conjugated microporous polymer to be firmly anchored on the rGO surface. The unique anchoring structure realizes alternate Zn 2+ /CF 3 SO − ion storage while providing high capacity and an ultra-long lifespan for zinc–organic batteries.

Язык: Английский

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Realizing an Energy-Dense Potassium Metal Battery at −40 °C via an Integrated Anode-Free and Dual-Ion Strategy

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Янв. 9, 2025

Potassium (K)-based batteries hold great promise for cryogenic applications owing to the small Stokes radius and weak Lewis acidity of K+. Nevertheless, energy-dense (>200 W h kg–1cathode+anode) K under subzero conditions have seldom been reported. Here, an over 400 kg–1cathode+anode battery is realized at −40 °C via anode-free dual-ion strategy, surpassing these state-of-the-art even most Li/Na low temperatures (LTs). By introduction a strongly associating salt as additive this battery, anion-derived solid electrolyte interphase can be established highly reversible, zero-excess plating/stripping behavior on bare current collector. Meanwhile, binary solvent rationally designed lowering cation desolvation energy barrier, which ensures comparably facile desolvation-free anion kinetics in structure LTs. Consequently, K||Al half-cell delivers high Coulombic efficiency 99.98% °C. pairing with high-energy cathode, proof-of-concept (N/P = 0) fabricated, delivering record-high density 407 stable cycling 183 cycles (80% capacity retention) This work paves way toward extreme scenarios.

Язык: Английский

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