Hyper-Range Amorphization Unlocks Superior Damage Tolerance in Alloys DOI Creative Commons
Ying Li, Jinliang Du, Shukuan Guo

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Abstract Shear bands dictate the failure mechanisms of alloys across various strain rates and limits damage tolerance alloy. While localized amorphization has potential to mitigate shear effects, it thus far been confined nanoscale. Here, we extend micrometer scale, fundamentally replacing shear-dominated in multi-principal element alloy micropillars. Instead applying a single rate, implement continuous compression training from low high rates, generating top-down high-density dislocation gradient that drives formation topological lattice disorder network, extending over one-third micropillar height (hyper-range amorphization). Within amorphous bands, atoms exhibit dynamic disorder, rearranges recovers dissipating stress. The achieves an ultimate compressive strength ceramic level (~6.5 GPa), while maintaining ~59.1% plasticity. This work reveals engineering-based mechanical mechanism for amorphization, establishing as viable pathway enhancing structural stability energy dissipation capacity alloys.

Language: Английский

Crystalline‐Amorphous Phase and Oxygen Vacancies Synergistically Regulate Vanadium Electronic States for Unleashing Zinc‐Ion Storage Performance DOI Open Access
Jingyu Sun, Li Zhang, Fengbo Li

et al.

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

Citations

5
Tetrafluoro(aryl)sulfanylated Bicyclopentane Crystals That Self-Destruct upon Cooling DOI

Abbey N. Ragan,

Yannick Kraemer, Subash K. Chaudhary

et al.

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

Citations

4
Realizing an Energy-Dense Potassium Metal Battery at −40 °C via an Integrated Anode-Free and Dual-Ion Strategy DOI
Jiangchun Chen, Hao Lan, Sicong Wang

et al.

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

Citations

3
A High‐Rate and Ultrastable Re2Te5/MXene Anode for Potassium Storage Enabled by Amorphous/Crystalline Heterointerface Engineering DOI

Bangjun Wu,

Yelong Zhang,

Zhongquan Wang

et al.

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

Citations

13
Polyoxometalate-derived bi-functional crystalline/amorphous interfaces with optimized d-electron configuration for efficient self-powered hydrazine-seawater splitting DOI
Qinghao Quan, Xiaolei Li, Chen Song

et al.

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

Published: April 1, 2024

Language: Английский

Citations

12
Crystalline-amorphous hybrid CoNi layered double hydroxides for high areal energy density supercapacitor DOI

Wenhao Tao,

Hongying Quan, Zhengkun Tu

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 683, P. 1 - 13

Published: Dec. 10, 2024

Language: Английский

Citations

10
Integrating Ni2P crystalline-NiFeBP amorphous heterojunction nanosheets on hierarchical nickel foam for superior overall water splitting DOI
Guang‐Lan Li, Fei Deng, Tien‐Ching Ma

et al.

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

Published: Jan. 1, 2025

Language: Английский

Citations

2
The Charge Self‐Regulation Effect Induced by Microcrystalline‐Amorphous Heterointerface Network Toward Fast Charging Sodium Ion Batteries DOI Open Access

Jinyu Ge,

Man Huang, Chenzhe Li

et al.

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

Published: Jan. 5, 2025

Abstract Sodium‐ion batteries (SIBs), recognized for their abundant resource availability, are emerging as a viable alternative to conventional batteries. Nevertheless, sluggish electrons/ions kinetics impedes further advancement in SIBs technology. Herein, novel microcrystalline‐MoSe 2 /amorphous‐MoSe x O y (C‐MoSe /A‐MoSe ) is developed through situ low‐temperature oxidation of crystalline MoSe . The microcrystalline acts robust framework, while the amorphous phase fills interstitial spaces. This anode material characterized by an optimized microcrystalline‐amorphous heterointerface. resultant charge self‐regulation effect can be exploited modulate active electron states, thereby ensuring high‐speed and stable sodium storage performance. heterointerface demonstrates ultrahigh specific capacity (641.0 mAh g −1 at 0.5 A maintains splendid rate performances up 100 (324.2 ). Detailed theoretical experimental researches indicate that enhanced performance results from production electronic which initiated C‐MoSe , featuring Mo─Se bonds, regulates interfacial redistribution facilitate transfer across interface between phases. findings suggest effect, prompted network, inherently accelerates electron/ion transport, offering promising electrode design strategy fast‐charging

Language: Английский

Citations

1
The advances in innovative amorphous noble-metal-based electrocatalysts DOI

Xiaoyu Fan,

Kexin Yin,

Huiqing Wang

et al.

Chem Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 101324 - 101324

Published: March 1, 2025

Language: Английский

Citations

1
Unlocking enhanced electrochemical performance through oxygen–nitrogen dual functionalization of iron–nickel–sulfide for efficient energy storage systems DOI
Lan Huong Nguyen, Roshan Mangal Bhattarai, Sosiawati Teke

et al.

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

Citations

9