Weixia Dong

Dominant influence of vibrational entropy on the phase transition in CoNi and related high-entropy alloys

Chiying Hu, Lingrui Fan, L. Zhu, Weixia Dong et autres

Entropy is an effective means to stabilize the high-temperature phase of a material. However, the origin of entropy is diverse, including configurational, vibrational, electronic, and magnetic, amongst others. It is still unclear, and sometimes controversial, which type of entropy plays a dominant …

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Low-temperature deformation mechanism in a work-hardenable body-centered cubic high-entropy alloy with a large uniform elongation

L. Zhu, Weixia Dong, Muhammad Naeem, Haojie Kong et autres

Metals/alloys with a body-centered cubic (BCC) structure usually exhibit a high yield strength but suffer from poor work-hardening capability, leading to limited uniform elongation. This limitation becomes even more pronounced at low temperatures, where a ductile-to-brittle transition is commonplace. High-entropy alloys (HEAs), …

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Evidence of liquid–liquid phase transition in Zr–Cu–Al melts and its link to glass-forming ability

Weixia Dong, Sinan Liu, Zhenduo Wu, Jiale Ma et autres

Liquid–liquid phase transition (LLPT) has been found in two Zr–Cu–Al glass-forming metallic melts above the liquidus temperature, characterized by thermophysical, structural, and density changes by in situ high-energy synchrotron x-ray diffraction, electrostatic levitation, and molecular dynamics simulation. A correlation between LLPT and …

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Dual-Anion-Rich Polymer Electrolytes for High-Voltage Solid-State Lithium Metal Batteries

Yangqian Zhang, Han Liu, Fangyan Liu, Shuoxiao Zhang et autres

Solid polymer electrolytes (SPEs) are promising candidates for lithium metal batteries (LMBs) owing to their safety features and compatibility with lithium metal anodes. However, the inferior ionic conductivity and electrochemical stability of SPEs hinder their application in high-voltage solid-state LMBs (HVSSLMBs). Here, …

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Temperature-controlled fabrication of floral α-MnO₂ micro-nanoarchitectures via one-step template-free hydrothermal synthesis and its enhanced electrochemical properties

Othniel Awuku Budu, Weixia Dong, Qifu Bao, Gao Ling Zhao et autres

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Enabling High Stability of Co-Free LiNiO2 Cathode via a Sulfide-Enriched Cathode Electrolyte Interface

Zhaowen Bai, Zhehan Ying, Fengqi Zhang, Wei Wang et autres

Cobalt-free lithium nickel oxide (LNO) has garnered significant interest as the end member of high-nickel layered oxide cathodes for next-generation batteries. However, its practical performance notably underperforms expectations because of the structural degradation and unstable interfacial chemistry with electrolytes during cycling. Here, …

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Mineral fusion via dehydration-induced residual stress: from gels to ceramic monoliths

Bo Li, Jie Yan, Hongkun Li, Haikun Wu et autres

Man-made ceramics generally undergo harsh manufacturing conditions (e.g., high-temperature sintering). In contrast, mineral structures with superior mechanical strength (e.g., teeth) are generated in organisms under mild biocompatible conditions. Herein, we report that ceramic objects can be directly produced and strengthened by drying …

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An anomalous structure disordering in Zr–Cu–Ag supercooled glass-forming liquids

Yu Lou, Sinan Liu, Jiacheng Ge, Huiqiang Ying et autres

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Medium-range order endows a bulk metallic glass with enhanced tensile ductility

Sinan Liu, Weixia Dong, Zhiqiang Ren, Jiacheng Ge et autres

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Synchrotron x-Ray Study of Heterostructured Materials: A Review

Jie Yan, Weixia Dong, Peijian Shi, Tianyi Li et autres

Heterostructured materials (HSMs) have shown great potential for breaking the strength-ductility tradeoff. HSMs consist of heterogeneous zones that may have different sizes, shapes, compositions, structures, etc. Interactions and competitions among them often lead to unprecedented properties. However, due to the complex structures …

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Nickel–molybdenum–niobium metallic glass for efficient hydrogen oxidation in hydroxide exchange membrane fuel cells

Fei‐Yue Gao, Si-Nan Liu, Jiacheng Ge, Xiaolong Zhang et autres

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Phase selection rule of high‐entropy metallic glasses with different short‐to‐medium‐range orders

Huiqiang Ying, Sinan Liu, Zhenduo Wu, Weixia Dong et autres

When an equiatomic multi‐component alloy is quenched from its molten state down to room temperature, either a solid solution crystalline alloy or a metallic glass is formed. The former is called a high‐entropy alloy, whereas the latter is referred as a high‐entropy …

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