Siwen Zhang

Seismic radial anisotropy beneath Mount Etna (Sicily, Italy) generated by deep mantle upwelling

Yuanyuan Hua, Yang Yu, Dapeng Zhao, Y Xu et autres

The central Mediterranean provides a key setting to investigate links between mantle upwelling, subduction, and arc volcanism. In southern Italy, rapid slab retreat and segmentation of the Calabrian subduction zone favor mantle flow, yet direct seismic evidence for mantle upwelling remains scarce. …

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Seismic Constraints on the 3‐D Magma Conduit System of Mount Etna

Siwen Zhang, Yuanyuan Hua, Dapeng Zhao, Yi‐Gang Xu et autres

Abstract Mount Etna, one of the most active volcanoes in the world, provides an excellent natural laboratory for investigating magma plumbing systems. However, previous models of Etna's volcanic structure have not adequately resolved the distribution of deep magma conduits. In this work, …

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Research on flame structure and oscillatory combustion Characteristics of hydrogen-enriched premixed Combustor

Hongxia Liang, Hongyu Ju, Siwen Zhang, Jianqin Suo

Hydrogen fuel has emerged as a critical research focus for gas turbines due to its zero-carbon and renewable advantages. However, the rapid chemical reaction rate and high combustion velocity of hydrogen can easily induce thermoacoustic oscillations. To investigate the acoustic characteristics of …

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Breaking diffusion constraints through fluorine-regulated MnO x /KMnF 3 heterostructures for enhanced aqueous Mg 2+ storage

Haixi Gu, Siwen Zhang, Minghui Liu, Wenhui Mi et autres

With the continuing demand for clean and sustainable energy storage devices, aqueous magnesium-ion capacitors have gained prominence as a viable electrochemical solution. However, high-performance aqueous magnesium-ion storage devices for energy need to satisfy rigorous requirements due to the large hydrated ionic radius …

Giant Birefringence Induced by Intermolecular Aromatic Interactions in Hydrogen‐Bonded Organic Frameworks

Yayong Sun, Hongyuan Sha, Yanqiang Li, Yayu Yan et autres

Birefringent crystals are crucial optical materials that play a pivotal role in modulating and detecting the polarization state of light. However, there is still a significant challenge in regulating the assembly of π-conjugated active units to construct optical crystals with giant birefringence. …

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Conductive polymer networks: enabling high-performance zinc-ion batteries via dual-ion storage mechanism and structural suppression

Hanyu Wen, Yaowen Shi, Bosi Yin, Haokun Wen et autres

Adaptive adjustment of layered metal oxide structures is the key to achieving high energy density in reversible zinc-ion batteries. However, as a transition metal oxide, vanadium-based cathode materials often have problems such as poor cycle stability and low energy storage capacity due …

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Active Poly(o-phenylenediamine)-Intercalated Layered δ-MnO2 Cathode for High-Performance Aqueous Zinc-Ion Batteries

Bosi Yin, Wenhui Mi, Minghui Liu, Siwen Zhang

Aqueous zinc-ion batteries (ZIBs) represent an emerging energy storage solution that offers significant advantages in terms of safety, cost-effectiveness, and longevity in cycling. Among the various materials available, manganese-based oxides stand out as the most promising options for cathodes due to their …

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PVP pre-intercalation engineering combined with the V 4+ /V 5+ dual-valence modulation strategy for energy storage in aqueous zinc-ion batteries

Wenhui Mi, Bosi Yin, Haixi Gu, Hanyu Wen et autres

We used a synergistic strategy involving PVP pre-embedding and vanadium valence hybridization. PVP stabilizes the material between oxide layers, enhancing cycling stability and promoting multielectron vanadium reactions through V 4+ /V 5+ mixed valence.

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Synthesis and Modification of Iron-based Cathode Materials: Iron Phosphate for Lithium Secondary Batteries

Xiubin Yang, Siwen Zhang, J. X. Zhang

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The Effects of Au Loading on the Electrochemical Properties of Fe1.5(PO4)(OH) Cathode Material for Lithium-Ion Batteries

Siwen Zhang, J. X. Zhang, Shuai Xu, Xu Ji Yuan

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THE STUDY ON SYNTHESIS AND MODIFICATION FOR IRON PHOSPHATE

Xiubin Yang, Siwen Zhang, J. X. Zhang, Mingjie Xu et autres

In order to improve the electrochemical performance of FePO 4, the method of Cr 3+ ion-doped FePO 4 was proposed in this paper. FePO 4 and doped Fe 1-x Cr x PO 4 (x = 0.02,0.04,0.06 and 0.08) were prepared by homogeneous …

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