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Redox-etching induced porous carbon cloth with pseudocapacitive oxygenic groups for flexible symmetric supercapacitor

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Journal of Energy Chemistry 2022年第1期31卷 136-143,I0005页

作者： Xu Han zi-hang huang Fanjin Meng Baohua Jia Tianyi Ma Institute of Clean Energy Chemistry Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning ProvinceCollege of ChemistryLiaoning UniversityShenyang 110036LiaoningChina Centre for Translational Atomaterials School of ScienceSwinburne University of TechnologyHawthornVIC 3122Australia

Constructing high-performance electrodes with both wide potential window(e.g.≥2 V in aqueous electrolyte)and excellent mechanical flexibility represents a great challenge for *** of the outstanding conductivity and flexibility,carb on cloth(CC)has show n unlimited prospects for constructing flexible electrodes,but is rarely used directly as electrode material due to its electrochemical inertness and small specific surface *** tackle these two critical limitations,we design a novel redox-etching strategy to synthesize CC-based electrode with 3D interconnecting pore *** sponge-like highly porous CC was further activated by strong oxidant to form abundant oxygenic groups,which occupy the interior and surface of current collector to render substantial *** as-synthesized CC electrode yielded an impressive capacitance of 4035 mF cm^(-2) at 3 mA cm^(-2) and satisfying cycling durability in a wide potential range of-1-1 V ***,which surpass the majority of reported CC-based electrodes.A symmetric supercapacitor with stable voltage of 2 V is assembled and delivers remarkable energy density of 6.57 mWh cm^(-3).Significantly,the device demonstrates an unparalleled flexibility with no capacitive decay after 100 bending *** facile chemical etching and post-treatment processes are designed for large-scale manufacturing of the CC electrodes by providing high surface area and abundant electrochemically active sites,promising for industry *** innovative synthetic strategy ope ns up new opportunities for high-performance flexible en ergy storage.

关键词： Porous carbon fiber Hierarchical pores Oxygenic groups Wide potential window High-performance supercapacitors

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Pulse-potential electrochemistry to boost real-life application of pseudocapacitive dual-doped polypyrrole

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SmartMat 2022年第4期3卷 644-656页

作者： Fang-Fang Sun Wen-Han Li zi-hang huang Wenping Sun Yuhai Dou Ding Yuan Baohua Jia Tianyi Ma Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials Institute of Clean Energy ChemistryCollege of ChemistryLiaoning UniversityShenyangChina School of Science RMIT UniversityMelbourneVictoriaAustralia School of Materials Science and Engineering State Key Laboratory of Clean Energy UtilizationZhejiang UniversityHangzhouChina Shandong Institute of Advanced Technology JinanChina Institute for Superconducting&Electronic Materials University of WollongongWollongongAustralia

Polypyrrole(PPy)is a very promising pseudocapacitive electrode material for ***,the poor electrochemical performances and cycling stability caused by volumetric change and counterion drain severely limited its practical application and ***,we present a pulsepotential polymerization strategy for uniformly depositing a dual-doped PPy with ordered and shorter molecular structure by balancing the concentration *** a strategy ensures more homogeneous stress distribution of PPy during ultralong cycling tests and improves the cycle ***,the pulse-potential polymerized PPy with dual anion doping behavior induces enhanced protonation level and improved electrical conductivity,which boosting the charge transfer ***,the as-synthesized PPy exhibits a remarkable capacitance performance(7250 mF/cm^(2)@3 mA/cm^(2)),outstanding rate capability(3073 mF/cm^(2)@200 mA/cm^(2))and a long cycle *** assembled symmetric and asymmetric supercapacitors(ASC)exhibit good energy densities(0.8 mWh/cm^(2) for ASC and 0.5 mWh/cm^(2) for symmetric supercapacitor),and excellent durability with zero capacitive loss after 35,000 *** addition,we have fabricated small pouch devices,which can effectively operate a variety of electronic products(including the high-voltage 5 V smartphone,and tablet)and well withstand the external extreme tests during operation,demonstrating the quantitative investigation of the real-life application of aqueous supercapacitors.

关键词： dual-doping energy storage polypyrrole pouch-type device pseudocapacitive pulse-potential polymerization

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Thermal Stability of Several Polyaniline/rare Earth Oxide Composites(Ⅲ):Polyaniline/Nd2O3 Composites

Thermal Stability of Several Polyaniline/rare Earth Oxide Co...

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第十六届全国化学热力学和热分析学术会议

作者： zi-hang huang~1,Shao-Xu Wang~(1,*),Hui Li~1,Zhi-Cheng Tan~2 1 College of Environmental & Chemical Engineering,Dalian Jiaotong University,Dalian 116028, 2 Thermochemisty Laboratory,Dalian Institute of Chemical Physics,Chinese Academy of Science,Dalian 116023

Polyaniline/Nd

关键词： PANI/Nd2O3 composite Thermal stability TG-DTG electrochemical performance

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Plasmon-induced local electric field improved hydrogen evolution reaction on Ag/Mo_(2)C nanosheets

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Nano Research 2025年第1期18卷 270-277页

作者： huangJingWei Li Xin zi Jun Wu Xinli Wang Li Zhu Qiyou Wang Jianfu Han Junwei Fu Hongmei Li Kai huang Yu Chen Min Liu School of Physics State Key Laboratory of Powder MetallurgyHunan Joint International Research Center for Carbon Dioxide Resource UtilizationCentral South UniversityChangsha 410083China School of Metallurgy and Environment Central South UniversityChangsha 410083China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Nano-Institute Munich Faculty of PhysicsLudwig-Maxilimians-Universität MünchenMünchen 80539Germany Hunan Institute of Advanced Sensing and Information Technology Xiangtan UniversityXiangtan 411105China

Electrocatalytic water splitting offers a promising way for hydrogen production with near-zero ***,such as molybdenum carbides(Mo_(2)C),are promising materials for hydrogen evolution reaction(HER)but still suffer from poor intrinsic water activation ***,we developed a plasmon-induced local electric field(PILEF)strategy to solve this ***(Ag)nanoparticles decorated Mo_(2)C nanosheets(Ag/Mo_(2)C)were successfully prepared by electrostatic *** visible light excited the PILEF on Ag/Mo_(2)C remarkably reducing the activation energy by 92.7 kJ·mol^(-1)from 147.3 kJ·mol^(-1)of Mo_(2)C to 54.6 kJ·mol^(-1).As a result,the plasmonic Ag/Mo_(2)C significantly enhances~2.3-fold of the current density from 2.8 mA·cm^(-2)of Mo_(2)C to 6.5 mA·cm^(-2)at-3 V *** and reduces the overpotential by 104 mV from 403 mV of dark state to 299 mV of light state at the current density of 10 mA·cm^(-2),achieving better performance than reported *** research demonstrates that PILEF enhances HER activities,offering a potential strategy for boosting the intrinsic activities of catalysts.

关键词： sliver particles plasmon effect field effect hydrogen evolution reaction(HER) electrocatalysis

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Study on the prediction and inverse prediction of detonation properties based on deep learning

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Defence Technology（防务技术） 2023年第6期24卷 18-30页

作者： zi-hang Yang Ji-li Rong zi-tong Zhao Department of Mechanics School of Aerospace EngineeringBeijing Institute of TechnologyBeijing100081China

The accurate and efficient prediction of explosive detonation properties has important engineering significance for weapon *** methods for predicting detonation performance include empirical formulas,equations of state,and quantum chemical calculation *** recent years,with the development of computer performance and deep learning methods,researchers have begun to apply deep learning methods to the prediction of explosive detonation *** deep learning method has the advantage of simple and rapid prediction of explosive detonation ***,some problems remain in the study of detonation properties based on deep *** example,there are few studies on the prediction of mixed explosives,on the prediction of the parameters of the equation of state of explosives,and on the application of explosive properties to predict the formulation of *** on an artificial neural network model and a one-dimensional convolutional neural network model,three improved deep learning models were established in this work with the aim of solving these *** training data for these models,called the detonation parameters prediction model,JWL equation of state(EOS)prediction model,and inverse prediction model,was obtained through the KHT thermochemical *** training,the model was tested for overfitting using the validation-set *** the model-accuracy test,the prediction accuracy of the model for real explosive formulations was tested by comparing the predicted value with the reference *** results show that the model errors were within 10%and 3%for the prediction of detonation pressure and detonation velocity,*** accuracy refers to the prediction of tested explosive formulations which consist of TNT,RDX and *** the prediction of the equation of state for explosives,the correlation coefficient between the prediction and the reference curves was above *** the prediction of the inverse predi

关键词： Deep learning Detonation properties KHT thermochemical Code JWL equation of states Artificial neural network One-dimensional convolutional neural network

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Study on influence of key blasthole parameters on tunnel overbreak

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Underground Space 2023年第2期9卷 76-90页

作者： zi-qiang Li Zheng Li Wei-wei huang Xuan-ming Ding hang Zhang School of Civil Engineering and Architecture Chongqing University of Science&TechnologyChongqing 401331China Key Laboratory of New Technology for Construction of Cities in Mountain Area Ministry of EducationChongqing UniversityChongqing 400045China Chongqing City Construction Investment(Group)Co. Ltd.Chongqing 400023China School of Civil Engineering Chongqing University400045China

To determine the influence of key blasthole parameters on tunnel overbreak during blasting construction,an intelligent detection sys-tem for tunnel blasting construction is independently *** the key blasthole parameters and overbreak of a typical section of a single line tunnel under the condition of Class V surrounding rock are analyzed and *** actual data obtained is compared with the results of numerical simulations and theoretical *** results are as follows:(1)Quantitative analysis is performed based on the blasthole angle,opening position,and charge mass by the self-developed intelligent detection equipment for blasthole parameters,which can be used to guide the drilling *** scanning equipment for outline excavation can be used to image the actual excavation section in real-time and has the advantages of high precision and fast speed;(2)Tunnel overbreak can be regarded as consisting of two parts:the surrounding rock damage caused by the blasting load,and the collapse of the surrounding rock caused by the blasthole opening *** parameter of the peripheral hole will affect the tunnel overbreak;however,the key parameter is the blasthole opening position;(3)The distributions of the tunnel overbreak volume obtained with the theoretical analysis,finite element simulation,and measurements are basically *** the condition of Class V surrounding rock,the overbreak of this single line tunnel can reach 14.1–78.2 *** meet the specification requirements,the opening position and construction accuracy of the peripheral hole should be strictly controlled.

关键词： Tunnel blasting Blasthole parameters Tunnel overbreak Surrounding rock damage Smooth surface blasting

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Fatigue damage analysis of ballastless slab track in heavy-haul railway tunnels

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Underground Space 2022年第3期7卷 440-452页

作者： zi-qiang Li Zheng Li Wei-wei huang Hong-rui Zhang hang Zhang School of Civil Engineering and Architecture Chongqing University of Science&TechnologyChongqing 41331China Chongqing City Construction Investment(Group)Co. Ltd.Chongqing 400023China Key Laboratory of New Technology for Construction of Cities in Mountain Area Ministry of EducationChongqing UniversityChongqing 400045China School of Mechanical and Electrical Engineering Hainan UniversityHainan 570228China

A ballastless slab track,which is commonly used in the track structures of heavy-haul railway tunnels,was analysed based on field measurement data of the Fuyingzi Tunnel on the Zhangtang *** accordance with the measured data,the dynamic load thresholds and distributions on the surface and bottom of the ballastless slab track were investigated.A fatigue damage analysis of the ballastless slab track was performed based on the dynamic load time–history *** results show that the ballastless slab track can accomplish train load attenuation and reduce the dynamic load from heavy-haul trains by 47.22%from the surface to the *** addition,the distribution at the bottom of the ballastless slab track exhibited a triangular shape,and the dynamic load threshold at the line centre accounted for 78.67%of that at the track ***,the distribution at the surface was saddle-shaped;the dynamic load threshold at the track position accounted for 79.55%of that at the line centre *** fatigue damage of the ballastless slab track was analysed effectively by combining the measured data and the linear fatigue damage ***,the accuracy of the calculation results was verified based on the measured dynamic stress of the ballastless slab track *** dynamic action of the train load led to more-concentrated damage to the track bed,and the damage occurred earlier than that in the ordinary *** axle load was the primary influencing factor of the track bed fatigue damage,and the damage mainly occurred in the track *** results provide a theoretical basis for performing stress analysis and designing parameters for ballastless slab tracks in heavy-haul railway tunnels.

关键词： Heavy-haul railway tunnel Numerical simulation results Ballastless slab track Fatigue damage

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Spin coating of TPB film on acrylic substrate and measurement of its wavelength shifting efficiency

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Nuclear Science and Techniques 2020年第3期31卷 57-65页

作者： hang Yang zi-Feng Xu Jian Tang Yi Zhang School of Physics Sun Yat-sen UniversityGuangzhou 510275China School of Chemistry Sun Yat-sen UniversityGuangzhou 510275China

Scintillation light from a liquid noble gas during a neutrino or dark matter experiment lies typically within the vacuum ultraviolet region and might be strongly absorbed by surrounding materials such as light guides or *** butadiene(TPB)is a fluorescent material,acts as a wavelength shifter,and can turn UV light into visible light at a peak wavelength of approximately 425 nm,enabling the light signals to be easily detected during physics *** with a traditional TPB coating method using vapor deposition,we propose an alternative technique applying a spin-coating procedure to facilitate the development of neutrino and dark matter *** article introduces a method to fabricate a TPB film on an acrylic substrate by using a spincoating method,reports the measurements of the sample film thickness and roughness,demonstrates the reemission spectrum,and quantifies the wavelength shifting efficiency.

关键词： Wavelength shifter Tetraphenyl butadiene Spin-coating method

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Liquid Flow in a Porous Channel with Electrokinetic Effects

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Communications in Theoretical Physics 2018年第10期70卷 391-398页

作者： hang Xu huang huang Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration（CISSE） State Key Laboratory of Ocean EngineeringSchool of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

In this paper, a fully developed laminar flow in a porous channel between two paralleled flat plates in the presence of a double layer electric field is analyzed. The linear Poisson-Boltzmann equation is suggested to model the double layer electric field near the solid-liquid interface. The equation of motion is extended by including the electrical body force generating from the double layer field and then solved analytically. Different from previous models, our proposed one is continuous in the whole flow field and matches commonly-accepted models in the field of fluid ***, the effects of various physical parameters such as the zeta potential, the electrokinetic separation distance, and the ratio of the streaming current to conduction current on the velocity, the pressure, the apparent viscosity of the fluid,as well as the streaming potential are discussed. Physical explanations on the changing trends of those physical quantities with various parameters are given.

关键词： microchannel expanding wall porous wall double layer electrical field laminar flow

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A rational consideration of the genomic instability of human-induced pluripotent stem cells for clinical applications

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Science China(Life Sciences) 2023年第9期66卷 2198-2200页

作者： hang Zhang zi-Bing Jin Beijing Institute of Ophthalmology Beijing Tongren HospitalCapital Medical UniversityBeijing 100730 China

Induced pluripotent stem cells (i PSCs) have gained popularity in regenerative medicine because of their ability to replicate and differentiate into multiple cell types, which has provided researchers with a powerful tool for modeling diseases and exploring treatments for human disorders. As i PSCs are obtained from the patient’s cells and possess the same potential as embryonic stem cells (ESCs).

关键词： pluripotent diseases rational

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