Tetrafluoro(aryl)sulfanylated Bicyclopentane Crystals That Self-Destruct upon Cooling

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: 147(2), P. 1463 - 1473

Published: Jan. 6, 2025

Whereas single crystals of organic compounds that respond to heat or light have been reported and studied in detail, studies on crystalline elicit an extreme mechanical response upon cooling very low temperatures are relatively rare the chemical literature. A tetrafluoro(aryl)sulfanylated bicyclopentane synthesized our laboratory was discovered exhibit such behavior; i.e., jumped forcefully disintegrated below ∼193 K. Accordingly, origin this low-temperature thermosalient effect investigated through NMR, SC-XRD, PXRD, microscopy, DSC, Raman, Brillouin experiments. To surprise, DSC experiments suggest phenomenon can neither be attributed solely a transformation nor phase transition entire material. Rather, XRD, provide evidence built-up strain released from crystal self-destruction may associated with microstructure occurs another material (i.e., impurity) crystal. This study demonstrates molecular structural changes impurity phases (which not necessarily visible by X-ray diffraction) significant impact behavior bulk Thus, role considered more heavily future mechanistic mechanically responsive crystals.

Language: Английский

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Integrating Ni2P crystalline-NiFeBP amorphous heterojunction nanosheets on hierarchical nickel foam for superior overall water splitting

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159290 - 159290

Published: Jan. 1, 2025

Language: 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, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

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Crystalline‐Amorphous Phase and Oxygen Vacancies Synergistically Regulate Vanadium Electronic States for Unleashing Zinc‐Ion Storage Performance

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

Published: March 20, 2025

Abstract Zinc‐ion capacitors (ZICs) are emerging as a compelling choice for energy storage in future, promising high power and densities coupled with eco‐friendly characteristics. This work presents novel approach to enhance the performance of ZICs by employing one‐step solvothermal synthesis growth V‐MOF on surface V 2 CT X ‐MXene, followed annealing fabricate 3D cross‐linked VO /V ‐MXene‐x(VO /MXene‐x) composite. The unique structure demonstrates excellent conductivity redox reaction activity, which significantly shortens Zn 2+ diffusion path. Moreover, intertwined crystalline‐amorphous efficiently suppresses lattice volume expansion during (de)intercalation. Density functional theory (DFT) reveals that amorphous O 5 enhances conductivity, lowers capture barrier, improves charge transfer efficiency. introduction oxygen vacancies further electronic transport. /MXene‐4 composite exhibits specific capacity 336.39 mAh g −1 at 1 A , maintaining 213.06 10 indicating outstanding rate performance, along an density 356.27 Wh kg 1280 W . offers insights design electrode materials feature phases, providing valuable into ion transport mechanisms strategies kinetics.

Language: Английский

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A High‐Rate and Ultrastable Re₂Te₅/MXene Anode for Potassium Storage Enabled by Amorphous/Crystalline Heterointerface Engineering

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(44)

Published: Sept. 13, 2024

Abstract The pursuit of anode materials capable rapid and reversible potassium storage performance is a challenging yet fascinating target. Herein, heterointerface engineering strategy proposed to prepare novel superstructure composed amorphous/crystalline Re 2 Te 5 anchored on MXene substrate (A/C‐Re /MXene) as an advanced for potassium‐ion batteries (KIBs). A/C‐Re /MXene exhibits outstanding capacity (350.4 mAh g −1 after 200 cycles at 0.2 A ), excellent rate capability (162.5 20 remarkable long‐term cycling (186.1 over 5000 cycles), reliable operation in flexible full KIBs, outperforming state‐of‐the‐art metal chalcogenides‐based devices. Experimental theoretical investigations attribute this high the synergistic effect with built‐in electric field elastic MXene, enabling improved pseudocapacitive contribution, accelerated charge transfer behavior, K + ion adsorption/diffusion ability. Meanwhile, combination intercalation conversion reactions mechanism observed within /MXene. This work offers new approach developing tellurides‐ MXene‐based anodes achieving stable cyclability fast‐charging KIBs.

Language: Английский

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Polyoxometalate-derived bi-functional crystalline/amorphous interfaces with optimized d-electron configuration for efficient self-powered hydrazine-seawater splitting

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150897 - 150897

Published: April 1, 2024

Language: Английский

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Amorphous/Crystalline Interface of Bi/Bi₄NbO₈Cl Heterostructure for Improved Piezo‐Photocatalysis

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Abstract Efficient separation of photogenerated charges at the surface photocatalysts is vital for achieving high photocatalytic activity. Here, a Bi/Bi 4 NbO 8 Cl heterostructure piezo‐photocatalyst with an amorphous/crystalline interface (acBi/BNC) prepared by in situ reduction using Bi as self‐sacrificial template. This ingenious design synergistically utilizes advantages structure, localized plasmon resonance effect, and piezoelectric field. The formation interfaces induces generation oxygen vacancies, subsequently lattice distortions, thus improving properties. Theoretical experimental results demonstrate that combination field promotes effective migration between bulk catalysts. Under simultaneous light ultrasound, optimal (acBi/BNC‐3) exhibit superior photodegradation efficiency tetracycline reached 80% within 5 min, reaction rate (2.78 × 10 −1 min ) 7.8 5.4 times pure (BNC) crystalline (cBi/BNC), respectively. Furthermore, piezo‐photocatalytic degradation surpasses those under individual photocatalysis piezocatalysis conditions. work provides novel rational to improve spatial charge Bi‐based catalysts prepare high‐performance piezo‐photocatalysts via engineering.

Language: Английский

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Manipulating amorphous and crystalline hybridization of Na3V2(PO4)3/C for enhancing sodium-ion diffusion kinetics

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 667, P. 64 - 72

Published: April 8, 2024

Language: Английский

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Unlocking enhanced electrochemical performance through oxygen–nitrogen dual functionalization of iron–nickel–sulfide for efficient energy storage systems

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(28), P. 17369 - 17381

Published: Jan. 1, 2024

This study showcases a supercapacitor device with oxygen–nitrogen dual functionalized and sulfurized iron–nickel hydroxysulfide, demonstrating high performance stability for energy storage.

Language: Английский

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Ultrasound Induces Local Disorder of FeOOH on CdIn₂S₄ Photoanode for High Efficiency Photoelectrochemical Water Oxidation

Small, Journal Year: 2024, Volume and Issue: 20(33)

Published: March 27, 2024

The regulation of the crystal structure oxygen evolution cocatalyst (OEC) is a promising strategy for enhancing photoelectrochemical efficiency photoanodes. However, prevailing regulating approach typically requires multistep procedure, presenting significant challenge maintaining structural integrity and performance photoanode. Herein, FeOOH with local disordered directly grown on CdIn

Language: Английский

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