Search results for: Zhonghua Zhang

Items from 1 to 20 out of 283 results

article

Structure/Composition/Phase Regulations of Dealloying‐Derived Nanoporous Metals and Their Solar Steam Generation Performances

Ying Zhang, Bin Yu, Yujun Shi, Fuquan Tan, more

Small > 20 > 24 > n/a - n/a

Structural regulation is of primary importance in structure‐property/application studies of dealloyed nanoporous metals. Three aspects are mainly considered to affect the microstructure of nanoporous metals: design of precursor alloy, choosing of dealloying parameter, and annealing treatment. Herein, through the combination of the above three strategies, the regulation of structure, composition and...

article

Highly thermally conductive electrically insulating composites composed of core–shell structure fiber boron nitride@titanium dioxide filler

Kailun Yang, Yu Feng, Liang Liang, Zhonghua Zhang, more

Polymer Composites > 45 > 4 > 3785 - 3797

With the increasing integration and power density of electronic and electrical equipment, highly thermally conductive insulating materials have a wide range of application scenarios. In this paper, a novel core–shell structure fiber thermal conductive filler hexagonal boron nitride@anatase titanium dioxide (h‐BN@AT) has been prepared by electrospinning technology first. The h‐BN@AT/epoxy resin (EP)...

article

Heterogenized Molecular Electrocatalyst Based on a Hydroxo‐Bridged Binuclear Copper(II) Phenanthroline Compound for Selective Reduction of CO₂ to Ethylene

Na Liu, Stephan Bartling, Armin Springer, Christoph Kubis, more

Advanced Materials > 36 > 6 > n/a - n/a

Molecular copper catalysts have emerged as promising candidates for the electrochemical reduction of CO₂. Notable features of such systems include the ability of Cu to generate C₂₊ products and the well‐defined active sites that allow for targeted structural tuning. However, the frequently observed in situ formation of Cu nanoclusters has undermined the advantages of the molecular frameworks. It is...

article

High thermal conductivity electrical insulation composite EP/h‐BN obtained by DC electric field induction

Liang Liang, Yu Feng, Kailun Yang, Zhanyi Wang, more

Polymer Composites > 45 > 1 > 181 - 192

Epoxy resin, as an adhesive for the main insulation system of large generators, has excellent insulation properties. But its poor thermal conductivity limits the capacity enhancement of large generators. Forming thermally conductive pathways by using electric field to induce high thermal conductivity fillers in the polymer can effectively improve the thermal conductivity of the composite at low loading...

article

Recent Advances and Challenges of Metal‐Based Materials for Solar Steam Generation

Bin Yu, Ying Zhang, Yan Wang, Zhonghua Zhang

Advanced Functional Materials > 33 > 51 > n/a - n/a

Global energy and environmental problems are becoming increasingly prominent, and the shortage of freshwater resources has been plaguing many countries and regions in the world. Solar steam generation (SSG) has emerged as a green, low‐cost and efficient strategy for freshwater production, which has attracted enormous attention in recent years. Furthermore, various photothermal materials and structural...

article

Study of a Piezoelectric Energy Harvesting Collaborative Strategy Based on the Synergy of Multifrequency Technique and Magnetic Nonlinear Technique

Jianming Wen, Nan Wei, Yaru Ding, Xinhui Li, more

Advanced Engineering Materials > 25 > 22 > n/a - n/a

For the purpose of improving the operating bandwidth and output power of piezoelectric vibration energy harvesters (PVEHs) in low‐frequency environment, a novel energy harvesting collaborative strategy based on the synergy of multifrequency technique and magnetic nonlinear technique is proposed. In order to reveal the working mechanism of the proposed strategy and determine the influence law of the...

article

An Inertial Noncontact Piezoelectric Rotary Energy Harvester with Linear Reciprocating Motion

Xiaotian Zheng, Lipeng He, Shuai Jiang, Lei Sun, more

physica status solidi (a) > 220 > 20 > n/a - n/a

Herein, an inertial noncontact piezoelectric rotary energy harvester with linear reciprocating motion (L‐PREH) is presented. The existing piezoelectric rotary harvester employing gravity excitation has limited performance when the rotation speed is high due to the negative influence of centrifugal force. L‐PREH translates rotational motion into linear motion via the transmission chain and employs...

article

Highly thermally conductive polymer composite enhanced by constructing a dual thermal conductivity network

Zhanyi Wang, Xuan Wang, Zhonghua Zhang, Liang Liang, more

Polymer Composites > 44 > 9 > 5734 - 5745

Constructing interconnected thermally conductive networks in a polymer matrix is essential for efficient heat transport in thermally managed materials. Thermally conductive network structures typically have meager thermal resistance, and heat transfer into the material is rapidly exported along such networks. However, increasing the thermally conductive networks inside the polymer matrix is still...

article

Preparation of a 3D BN network structure by a salt‐template‐assisted method filled with epoxy resin to obtain high thermal conductivity nanocomposites

Zhanyi Wang, Xuan Wang, Zhonghua Zhang, Liang Liang, more

Polymer Composites > 44 > 6 > 3610 - 3621

It is crucial to improve the thermal management capability of polymeric materials while maintaining their electrical insulating properties. Constructing thermally conductive networks with three‐dimensional structures inside polymers is an efficient way to build thermally conductive pathways. A unique three‐dimensional interconnected hexagonal boron nitride (h‐BN) skeleton was prepared by sacrificing...

article

Highly Stable Sb/C Anode for K⁺ and Na⁺ Energy Storage Enabled by Pulsed Laser Ablation and Polydopamine Coating

Hui Gao, Jeongyeon Lee, Qixiao Lu, Yoonbin Kim, more

Small > 19 > 4 > n/a - n/a

Potassium‐ and sodium‐ion batteries (PIBs and SIBs) have great potential as the next‐generation energy application owing to the natural abundance of K and Na. Antimony (Sb) is a suitable alloying‐type anode for PIBs and SIBs due to its high theoretical capacity and proper operation voltage; yet, the severe volume variation remains a challenge. Herein, a preparation of N‐doped carbon‐wrapped Sb nanoparticles...

article

Measuring leadership development in workplace learning using automated assessments: Learning analytics and measurement theory approach

Abhinava Barthakur, Vitomir Kovanovic, Srecko Joksimovic, Zhonghua Zhang, more

British Journal of Educational Technology > 53 > 6 > 1842 - 1863

Technological affordances have shown promising potential in advancing the delivery of corporate learning programmes designed for professional leadership development. However, there is a considerable challenge in evaluating learners' skill acquisition, with most of the past research relying on pre‐ and post‐tests or other forms of self‐reports to measure leadership development. In that sense, these...

article

Charge‐Compensation in a Displacement Mg²⁺ Storage Cathode through Polyselenide‐Mediated Anion Redox

Xuelian Qu, Aobing Du, Tao Wang, Qingyu Kong, more

Angewandte Chemie International Edition > 61 > 29 > n/a - n/a

Chalcogenides have been viewed as important conversion‐type Mg²⁺‐storage cathodes to fulfill the high volumetric energy density promise of magnesium (Mg) batteries. However, the low initial Columbic efficiency and the rapid capacity degradation remain challenges for the chalcogenide cathodes, as the clear Mg²⁺‐storage mechanism has yet to be clarified. Herein, we illustrate that the charge storage...

article

Charge‐Compensation in a Displacement Mg²⁺ Storage Cathode through Polyselenide‐Mediated Anion Redox

Xuelian Qu, Aobing Du, Tao Wang, Qingyu Kong, more

Angewandte Chemie > 134 > 29 > n/a - n/a

article

Microstructural/Compositional Regulations and Actuation Properties of Nanoporous Ternary CuMnNi Alloys Fabricated by Electrochemical Dealloying

Fuquan Tan, Xuejiao Yan, Wanfeng Yang, Yue Sun, more

physica status solidi (a) > 219 > 13 > n/a - n/a

Metallic actuators have received a wide range of attention in the past two decades because of their larger strains than piezoelectric ceramics and higher strength relative to conducting polymers. However, the metallic actuators composed of noble metals are limited to the high material cost for further development and practical applications. Here, nanoporous CuMnNi (np‐CMN) alloys are fabricated from...

article

Hierarchically Structured Black Gold Film with Ultrahigh Porosity for Solar Steam Generation

Ying Zhang, Yan Wang, Bin Yu, Kuibo Yin, more

Advanced Materials > 34 > 21 > n/a - n/a

Plasmonic metals demonstrate significant potential for solar steam generation (SSG) because of their localized surface plasmon resonance effect. However, the inherently narrow absorption spectra of plasmonic metals significantly limit their applications. The fabrication of nanostructures is essential to achieve broadband solar absorption for high‐efficiency vapor generation. Herein, a self‐supporting...

article

Mechanistic Insights into the Intercalation and Interfacial Chemistry of Mesocarbon Microbeads Anode for Potassium Ion Batteries

Dandan Wang, Lingjie Li, Zhonghua Zhang, Jing Liu, more

Small > 17 > 44 > n/a - n/a

Mesocarbon microbeads (MCMB) are highly desirable as anode materials for rechargeable potassium ion batteries (PIBs) due to their commercially availability, high stability and low‐cost. However, their charge storage and interfacial mechanisms are still unclear. In this work, the intercalation mechanisms and the solid‐electrolyte‐interphase (SEI) formation of the MCMB in four different electrolytes...

article

Facile Preparation of MoS₂ Nanocomposites for Efficient Potassium‐Ion Batteries by Grinding‐Promoted Intercalation Exfoliation

Honglei Wang, Jiazheng Niu, Jun Shi, Wenzhen Lv, more

Small > 17 > 34 > n/a - n/a

Efficient exfoliations of bulk molybdenum disulfide (MoS₂) into few‐layered nanosheets in pure phase are highly attractive because of the promising applications of the resulted 2D materials in diversified optoelectronic devices. Here, a new exfoliation method is presented to prepare semiconductive 2D hexagonal phase (2H phase) MoS₂–cellulose nanocrystal (CNC) nanocomposites using grinding‐promoted...

article

Uniform Magnesium Electrodeposition via Synergistic Coupling of Current Homogenization, Geometric Confinement, and Chemisorption Effect

Zihao Song, Zhonghua Zhang, Aobing Du, Shanmu Dong, more

Advanced Materials > 33 > 26 > n/a - n/a

Unevenly distributed magnesium (Mg) electrodeposits have emerged as a major obstacle for Mg‐metal batteries. A comprehensive design matrix is reported for 3D magnesiophilic hosts, which regulate the uniform Mg electrodeposition through a synergistic coupling of homogenizing current distribution, geometric confinement, and chemisorptive interaction. Vertically aligned nitrogen‐ and oxygen‐doped carbon...

article

Tailoring P2/P3 Biphases of Layered Na_xMnO₂ by Co Substitution for High‐Performance Sodium‐Ion Battery

Na Jiang, Qiunan Liu, Jiawei Wang, Wanfeng Yang, more

Small > 17 > 7 > n/a - n/a

P‐type layered oxide is a promising cathode candidate for sodium‐ion batteries (SIBs), but faces the challenge of simultaneously realizing high rate capability and long cycle life. Herein, Co‐substituted Na_xMnO₂ nanosheets with tunable P2/P3 biphase structures are synthesized by a novel dealloying–annealing strategy. The optimized P2/P3–Na_0.67Mn_0.64Co_0.30Al_0.06O₂ cathode delivers an excellent rate...

article

Aesthetic study of patterns based on event‐related potential and eye‐tracking: Taking the decorative patterns of the Tang dynasty as an example

Zhonghua Zhang, Boming Xu, Tianxing Zhang

Journal of the Society for Information Display > 29 > 2 > 119 - 129

The decorative patterns of Tang dynasty (DPTD) combine Chinese and western styles, providing inspirations to designers. The main purpose of the study is to summarize aesthetic cognition for DPTD and improve modern Tang style products design, thus introducing new materials and ideas to modern products design. The event‐related potential (ERP) and eye‐tracking were mainly used to study DPTD, exploring...

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INFONA - science communication portal

Search results for: Zhonghua Zhang

Structure/Composition/Phase Regulations of Dealloying‐Derived Nanoporous Metals and Their Solar Steam Generation Performances

Highly thermally conductive electrically insulating composites composed of core–shell structure fiber boron nitride@titanium dioxide filler

Heterogenized Molecular Electrocatalyst Based on a Hydroxo‐Bridged Binuclear Copper(II) Phenanthroline Compound for Selective Reduction of CO₂ to Ethylene

High thermal conductivity electrical insulation composite EP/h‐BN obtained by DC electric field induction

Recent Advances and Challenges of Metal‐Based Materials for Solar Steam Generation

Study of a Piezoelectric Energy Harvesting Collaborative Strategy Based on the Synergy of Multifrequency Technique and Magnetic Nonlinear Technique

An Inertial Noncontact Piezoelectric Rotary Energy Harvester with Linear Reciprocating Motion

Highly thermally conductive polymer composite enhanced by constructing a dual thermal conductivity network

Preparation of a 3D BN network structure by a salt‐template‐assisted method filled with epoxy resin to obtain high thermal conductivity nanocomposites

Highly Stable Sb/C Anode for K⁺ and Na⁺ Energy Storage Enabled by Pulsed Laser Ablation and Polydopamine Coating

Measuring leadership development in workplace learning using automated assessments: Learning analytics and measurement theory approach

Charge‐Compensation in a Displacement Mg²⁺ Storage Cathode through Polyselenide‐Mediated Anion Redox

Charge‐Compensation in a Displacement Mg²⁺ Storage Cathode through Polyselenide‐Mediated Anion Redox

Microstructural/Compositional Regulations and Actuation Properties of Nanoporous Ternary CuMnNi Alloys Fabricated by Electrochemical Dealloying

Hierarchically Structured Black Gold Film with Ultrahigh Porosity for Solar Steam Generation

Mechanistic Insights into the Intercalation and Interfacial Chemistry of Mesocarbon Microbeads Anode for Potassium Ion Batteries

Facile Preparation of MoS₂ Nanocomposites for Efficient Potassium‐Ion Batteries by Grinding‐Promoted Intercalation Exfoliation

Uniform Magnesium Electrodeposition via Synergistic Coupling of Current Homogenization, Geometric Confinement, and Chemisorption Effect

Tailoring P2/P3 Biphases of Layered Na_xMnO₂ by Co Substitution for High‐Performance Sodium‐Ion Battery

Aesthetic study of patterns based on event‐related potential and eye‐tracking: Taking the decorative patterns of the Tang dynasty as an example

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