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Biomass-templated strategy to synthesize Fe2P/Co2P heterojunction bifunctional electrocatalyst for high performance flexible zinc-air batteries

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Science China Chemistry 2025年

作者： Kang Huang Jiapeng Hu Jicun Cao Xinmin Wei Shihao Liu Qiming Dai Fei Shen Xinyang Zhang Xiaohui Zhao Yang Peng Zhao Deng Yizhong Huang School of Optical and Electronic Information&Jiangsu/Suzhou Key Laboratory of Biophotonics&International Joint Metacenter for Advanced Photonics and Electronics Suzhou City University Soochow Institute for Energy and Materials innovations College of EnergyKey Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow University Suzhou Derby Electronic Material Technology Co.ltd. School of Materials Science and Engineering Nanyang Technological University

Flexible Zn-air batteries （ZABs） are considered one of the most promising energy storage systems in wearable electronic *** key component in the flexible ZABs is the air cathode,which hosts the reversible electrocatalytic oxygen evolution reaction （OER） and oxygen reduction reaction （ORR） to attain long-term *** the present work,combining the advantage of the electrospinning technique and biomass-derived heteroatomic porous carbon,Fe2P/Co2P heterojunctions supported on N,P co-doped porous carbon are prepared,exhibiting excellent electrocatalytic OER/ORR performances,which is better than the commercial electrocatalysts based on noble ***,the flexible aqueous ZABs as fabricated present remarkable charge and discharge rates,power density,volumetric energy density,folding durability,as well as long-term operational *** initiating a novel route toward the design and development of air cathode electrode materials,this work paves the way for the practical deployment of flexible ZABs.

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Materials Science and Engineering and Its Economical Impacts

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Materials Science and Engineering and Its Economical Impacts

Real-time four-dimensional scanning transmission electron microscopy through sparse sampling

2003年新材料发展趋势研讨会

作者：林垂宙 Hong Kong University of Science and Technology and Tsing-Tech innovations Ltd

＜正＞老子:第十一章三十幅共一轂,當其無,有車之用。埏埴以為器,當其無,有器之用。鑿戶（?）以為室,當其無,有室之用。故有之以為利,無之以爲用。

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Chinese Physics B 2024年第11期33卷 34-38页

作者： A W Robinson J Wells A Moshtaghpour D Nicholls C Huang A Velazco-Torrejon G Nicotra A I Kirkland N D Browning 无 SenseAI innovations ltd. LiverpoolUK Centre for Doctoral Training University of LiverpoolLiverpoolUK Correlative Imaging Group Rosalind Franklin InstituteOxfordUK CNR-IMM Z.I.VIII Strada 5Catania95121Italy Department of Mechanical Materialsand Aerospace EngineeringUniversity of LiverpoolLiverpoolUK

Four-dimensional scanning transmission electron microscopy(4-D STEM)is a state-of-the-art image acquisition mode used to reveal high and low mass elements at atomic *** acquisition of the electron momenta at each real space probe location allows for various analyses to be performed from a single dataset,including virtual imaging,electric field analysis,as well as analytical or iterative extraction of the object induced phase ***,the limiting factor in 4-D STEM is the speed of acquisition which is bottlenecked by the read-out speed of the camera,which must capture a convergent beam electron diffraction(CBED)pattern at each probe position in the *** developments in sparse sampling and image inpainting(a branch of compressive sensing)for STEM have allowed for real-time recovery of sparsely acquired data from fixed monolithic detectors,Further developments in compressive sensing for 4-D STEM have also demonstrated that acquisition speeds can be increased,i.e.,live video rate 4-D imaging is now *** this work,we demonstrate the first practical implementations of compressive 4-D STEM for real-time inference on two different scanning transmission electron microscopes.

关键词： compressive sensing 4-D STEM inpainting

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Enhanced Electrochemical Properties and Optimized Li^(+)Transmission Pathways of PEO/LLZTO-Based Composite Electrolytes Modified by Supramolecular Combination

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Energy & Environmental Materials 2024年第1期7卷 238-246页

作者： Zhengyi Lu Lin Peng Yi Rong Enli Wang Ruhua Shi Hongxun Yang Yadong Xu Ruizhi Yang Chao Jin College of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhou 215006China Jiangsu Runchao Energy Storage Technology Co. LtdZhenjiang 212050China

Poly(ethylene oxide)(PEO)and Li_(6.75)La_(3)Zr_(1.75)Ta_(0.25)O_(12)(LLZTO)-based composite polymer electrolytes(CPEs)are considered one of the most promising solid electrolyte ***,agglomeration of LLZTO within PEO and lack of Li^(+)channels result in poor electrochemical ***,a functional supramolecular combination(CD-TFSI)consisting of activeβ-cyclodextrin(CD)supramolecular with self-assembled LiTFSI salt is selected as an interface modifier to coat LLZTO *** from vast H-bonds formed betweenβ-CD and PEO matrix and/or LLZTO,homogeneous dispersion and tight interface contact are ***,^(6)Li NMR spectra confirm a new Li^(+)transmission pathway from PEO matrix to LLZTO ceramic then to PEO matrix in the as-prepared PEO/LLZTO@CD-TFSI CPEs due to the typical cavity structure ofβ-*** a proof,the conductivity is increased from 5.3×10^(-4)S cm^(-1)to 8.7×10^(-4)S cm^(-1)at 60℃,the Li^(+)transference number is enhanced from 0.38 to 0.48,and the electrochemical stability window is extended to 5.1 V versus Li/Li^(+).Li‖LiFePO_(4)CR2032 coin full cells and pouch cells prove the practical application of the as-prepared PEO/LLZTO@CD-TFSI *** work offers a new strategy of interface modifying LLZTO fillers with functional supramolecular combination to optimize PEO/LLZTO CPEs for solid lithium batteries.

关键词： conductivity interfacial stability LLZTO fillers modification PEO matrix

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Transfer-free chemical vapor deposition graphene for nitride epitaxy: challenges, current status and future outlook

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Science China Chemistry 2024年第3期67卷 824-840页

作者： Xiang Gao Senlin Li Jingfeng Bi Kaixuan Zhou Meng Li Zhongfan Liu Jingyu Sun College of Energy Soochow Institute for Energy and Materials InnovationsSUDA-BGI Collaborative Innovation CenterKey Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215006China Beijing Graphene Institute Beijing 100095China Xiamen Silan Advanced Compound Semiconductor Co.ltd. Xiamen 361026China

Graphene, a two-dimensional material with outstanding electrical and mechanical properties, has attracted considerable attention in the field of semiconductor technologies due to its potential use as a buffer layer for the epitaxial Ⅲ-nitride growth. In recent years, significant progress has been made in the chemical vapor deposition growth of graphene on various insulating substrates for the nitride epitaxy, which offers a facile, inexpensive, and easily scalable methodology. However, certain challenges are still present in the form of producing high-quality graphene and achieving optimal interface compatibility with Ⅲ-nitride *** this review, we provide an overview of the bottlenecks associated with the transferred graphene fabrication techniques and the state-of-the-art techniques for the transfer-free graphene growth. The present contribution highlights the current progress in the transfer-free graphene growth on different insulating substrates, including sapphire, quartz, SiO_(2)/Si, and discusses the potential applications of transfer-free graphene in the Ⅲ-nitride epitaxy. Finally, it includes the prospects of the transfer-free graphene growth for the Ⅲ-nitride epitaxy and the challenges that should be overcome to realize its full potential in this field.

关键词： Transfer-free chemical vapor deposition graphene for nitride epitaxy challenges current status and future outlook graphene

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Fe₃O₄ and Fe Nanoparticles by Chemical Reduction of Fe(acac)₃ by Ascorbic Acid: Role of Water

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World Journal of Nano Science and Engineering 2016年第1期6卷 20-28页

作者： Ajinkya G. Nene Makoto Takahashi Prakash R. Somani Department of Applied Chemistry Chubu University Kasugai Japan Applied Science innovations Pvt. ltd. Pune India

Nanoparticles of Fe3O4 and Fe are chemically synthesized by reduction of Fe(acac)3 using ascorbic acid in controlled condition. It was observed that addition of water during the chemical synthesis process yields Fe3O4 nanoparticles, whereas if the reaction is carried out in absence of water yields Fe nanoparticles—which get oxidized upon exposure to air atmosphere. Fe3O4 (15 ± 5 nm) and Fe/iron oxide nanoparticles (7 ± 1 nm) were successfully synthesized in the comparative study reported herewith. Mechanism for formation/synthesis of Fe3O4 and Fe/iron oxide nanoparticles is proposed herewith in which added water acts as an oxygen supplier. Physico-chemical characterization done by SEM, TEM, EDAX, and XPS supports the proposed mechanism.

关键词： Fe3O4 Nanoparticles Fe-Nanoparticles Iron Oxide Chemical Reduction Method

High-Density Block Transformation to Increase Natural Ventilation Based on CFD Simulation

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Fluid Dynamics & Materials Processing 2021年第1期17卷 141-157页

作者： Siqi Liu Guanqi Huang Shaanxi Provincial Land Engineering Construction Group Co. Ltd.Xi’an710075China Institute of Land Engineering and Technology Shaanxi Provincial Land Engineering Construction Group Co.Ltd.Xi’an710075China Center for Housing innovations Chinese University of Hong KongHong Kong Guangzhou Urban Planning&Design Survey Research Institute Guangzhou510060China

Many countries in the world have experienced extremely rapid urbanization during recent decades. The rapiddevelopment of densely populated areas has produced many urban environmental problems. This researchexplores the relationship between urban morphology and ventilation conditions. Through 3D modeling andComputational Fluid Dynamics (CFD) simulation, we focus on the large scale ventilation of an extended area withseveral buildings. As a testbed, in particular, the core part of Kwun Tong industrial park in Hong Kong is examined, and in order to validate the approach, 10 measurement points are used to get experimental values to be usedfor comparison (such points are located in different positions involving traffic road, pedestrian path and openspace). The error range (±0.7 m/s) indicates that the agreement between field measurement and CFD calculationis good. On the basis of design guidelines and earlier studies, the effective configuration (in terms of building) ofthis area is partially transformed (virtually, i.e., in the numerical simulations) in order to assess the ensuingchanges in terms of wind speed in different locations. This results in a general design and analysis methodologypotentially applicable to other areas.

关键词： CFD thermal comfort ventilation open space

New digital drilling process monitoring: Instrumentation, validation and calibration

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Journal of Rock Mechanics and Geotechnical Engineering 2025年第1期17卷 31-54页

作者： Yanpeng Sun Zuyu Chen Fangcai Xu Yufei Zhao Ruilang Cao Dong Li State Key Laboratory of Eco-hydraulics in Northwest Arid Region Xi'an University of TechnologyXi'an710048China State Key Laboratory of Simulation and Regulation of the Water Cycle in River Basins China Institute of Water Resources and Hydropower ResearchBeijing100048China Sinohydro Foundation Engineering Co. Ltd.Tianjin301700China North China Institute of Science&Technology Langfang065201China

This study aims to enhance the digital drilling process monitoring(DPM)or monitoring while drilling(MWD)technique,which is a widely recognized method in geological exploration for evaluating rock mass ***,robust displacement and torque measurement facilities for rotary-core drilling are *** conventional cable encoder for displacement measurement is replaced with a magnetostrictive displacement sensor,which is more reliable in harsh field drilling *** enables the measurement of the bit position with an accuracy of1 *** addition,by measuring the electric current of the driving motor,the torque applied to the bit is conveniently and accurately *** innovations ensure high-quality data collection for DPM ***,two indices derived from DPM are proposed to quantitatively describe rock mass *** specific energy index(SEI)and specific penetration index(SPI)are based on the principles of energy conservation and Mohr-Coulomb failure criterion,*** field tests conducted in a dam grouting area confirm a linear relationship between the thrust force and penetration per rotation,and between the torque and penetration per *** correlation ratios of the related regressions are typically>*** two indices allow for the quantitative interpretation of DPM data into rock mechanics characteristics,such as uniaxial compressive strength,rock quality designation(RQD),and rock mass permeability,eliminating the need for subjective judgment normally involved in the currently used rock mass quality rating approaches.

关键词： Drilling process monitoring Specific penetration index Specific energy index Fracture identification

Numerical investigation on the responses of existing single piles due to adjacent twin tunneling considering the lagging distance

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Underground Space 2023年第4期11卷 171-188页

作者： Chana Phutthananon Somkiat Lertkultanon Pornkasem Jongpradist Ochok Duangsano Suched Likitlersuang Pitthaya Jamsawang Construction innovations and Future Infrastructures Research Center Department of Civil EngineeringFaculty of EngineeringKing Mongkut’s University of Technology ThonburiBangkok 10140Thailand Geotechnical and Foundation Engineering Co. LtdBangkok 10230Thailand Centre of Excellence in Geotechnical and Geoenvironmental Engineering Department of Civil EngineeringFaculty of EngineeringChulalongkorn UniversityBangkok 10330Thailand Soil Engineering Research Center Department of Civil EngineeringKing Mongkut’s University of Technology North BangkokBangkok 10800Thailand

This paper presents an assessment of the influence of the lagging distance between two horizontal tunnel faces of the side-by-side twin tunnels on the responses of the adjacent existing single pile by a series of three-dimensional numerical *** different relative positions between the pile tip and the tunnel are considered to cover the short and long pile *** responses of the existing pile in terms of pile head settlement,axial force,lateral movement and bending moment are considered and *** numerical results indicate that the lagging distance between twin tunnel faces significantly affects not only the soil movements but also the responses of the existing single *** critical case that produces unsatisfactory pile responses due to twin tunneling is when the lagging distance between the second tunnel and the preceding tunnel equals to the shield *** is recommended that the lagging distance be not less than three times of shield length when the two tunnels need to be concurrently excavated.

关键词： Twin tunnels Tunnel lagging distance Existing pile Finite element analysis Pile responses