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Organic interlayer engineering of TiS_(2) for enhanced aqueous Zn ions storage

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Journal of Materials Science & Technology 2023年第9期140卷 135-141页

作者： Chengcheng Huang Yiwen Liu Jing Li zhonghao miao Xinhao Cai Zhouxiang Wu Haoxiang Yu Lei Yan Liyuan Zhang Jie Shu School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211China

Aqueous rechargeable zinc-ion batteries(ARZIBs)have a bright future for energy storage due to their high energy density and ***,for traditional ARZIBs,cathode materials always suffer from the limited space for large-sized zinc ions storage and transport,leading to low Coulombic efficiency and inferior cycling *** build a reliable host with large tunnel,1-butyl-1-methylpyrrolidinium ion(PY14^(+))pre-intercalated TiS_(2)(PY14^(+)-TiS_(2))is designed as an alternative intercalation-type *** the insertion organic guest widens the interlayer space of TiS_(2)and buffers the lattice stress generated during the electrochemical cycles,the structural reversibility,cycling stability and kinetics properties of PY14^(+)-TiS_(2) are enhanced greatly.A specific capacity of 130.9 mAh g^(−1) with 84.3%capacity retention over 500 cycles can be achieved at 0.1 A g^(−1).Therefore,this study paves the way for enhancing the aqueous Zn ions storage capability by organic interlayer engineering.

关键词： Pre-intercalation Organic interlayer engineering TiS_(2) Intercalation-type electrode Aqueous zinc-ion batteries

A New Method for In-Situ Measurement of Internal Solitary Waves Based on the Stimulated Raman Scattering in Optical Fibers

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Journal of Ocean University of China 2023年第3期22卷 658-664页

作者： WANG Jing ZHANG Meng miao Xiangying YANG zhonghao LI Zhixin HUO Dianheng miao Hongli School of Physics and Optoelectronic Information Ocean University of ChinaQingdao 266100China

In-situ measurement of internal solitary waves(ISWs)is complicated in the ocean due to their *** present,the ISWs are mainly detected by the chain structure of conductivity-temperature-depth systems(CTDs)or temperature *** high cost limits the spatial resolution,which ultimately affects the measuring accuracy of the ISW *** this paper,we developed an experimental measurement system for detecting ISWs based on the stimulated Raman scattering in distributed optical *** system has the advantages of high precision,low cost,and easy *** experimental results show that the system is consistent with CTDs in the measurement of vertical ocean temperature *** spatial resolution of the system can reach 1.0 m and the measuring accuracy of temperature is 0.2℃.We successfully detected 3 ISWs by the system in the South China Sea and two optical remote sensing images collected on May 18,2021,the same day of two detected ISWs,verify the occurrence of the measured *** used the image pairs method to calculate the phase velocity of ISW and the result is 1.71 ms^(-1).By extracting the distances between wave packets,it can be found that the semi-diurnal tide generates the detected *** impact of the tidal current velocity on the ISW in amplitude is ***,the system has a great application prospect for detecting ISWs and other dynamic phenomena in the ocean.

关键词： internal solitary wave optical fiber stimulated Raman scattering in-situ measurement

Enhancement of heat transfer of microcapsulated particles using copper particles and copper foam

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Particuology 2018年第6期16卷 85-93页

作者： zhonghao Rao Yiping Wen Chenzhen Liu School of Electrical and Power Engineering China University of Mining and TechnologyXuzhou 221116China

The application of phase-change materials (PCM)for thermal-energy storage is hampered by their low thermal *** particles (CP)and copper foam (CF)were used to enhance the thermal conductivity of a microencapsulated phase-change material (MicroPCM).The effects of the CP size and mass fraction and the pore number per inch (PPI)of the CF on the thermal properties of the MicroPCM were *** chemical and microstructures of the MicroPCM and its CP composites were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy,respectively. Their thermal conductivities,phase-change temperatures,and latent heats were *** CP into the MicroPCM decreased the latent heats with increasing *** thermal conductivities of MicroPCM/CP (Swt%,50nm diameter)and MicroPCM/CF (PPI 30)were 1.12times and 3.46times that of the unmodified MicroPCM at 20℃,***-energy storage performances of the MicroPCM/CF composites were studied at a power of 2.9±*** temperature of the contact surfaces of the pure MicroPCM and its composites (PPI 10,PPI 20,PPI 30)was 75.88,51.27,50.52,and 50.23℃,*** composites displayed more uniform temperature distributions.

关键词： Microencapsulated phase-change material Copper particles Copper foam Thermal conductivity Thermal energy storage

Fast measurement and prediction method for electromagnetic susceptibility of receiver

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Journal of Systems Engineering and Electronics 2024年第2期35卷 275-285页

作者： CHEN Yan LU zhonghao LIU Yunxia State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System College of Electronic Science and TechnologyNational University of Defense TechnologyChangsha 410073China State Key Laboratory of Astronautic Dynamics Xi’an 710043China

Aiming at evaluating and predicting rapidly and accurately a high sensitivity receiver’s adaptability in complex electromagnetic environments,a novel testing and prediction method based on dual-channel multi-frequency is proposed to improve the traditional two-tone ***,two signal generators are used to generate signals at the radio frequency(RF)by frequency scanning,and then a rapid measurement at the intermediate frequency(IF)output port is carried out to obtain a huge amount of sample data for the subsequent ***,the IF output response data are modeled and analyzed to construct the linear and nonlinear response constraint equations in the frequency domain and prediction models in the power domain,which provide the theoretical criteria for interpreting and predicting electromagnetic susceptibility(EMS)of the *** experiment performed on a radar receiver confirms the reliability of the method proposed in this *** shows that the interference of each harmonic frequency and each order to the receiver can be identified and predicted with the sensitivity *** on this,fast and comprehensive evaluation and prediction of the receiver’s EMS in complex environment can be efficiently realized.

关键词： electromagnetic susceptibility(EMS) receiver dualchannel multi-frequency nonlinear response frequency domain power domain

Enhancing lithium-sulfur battery performance with In_(2)O_(3)-In_(2)S_(3)@NSC heterostructures:Synergistic effects of double barrier and catalytic transformation

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Journal of Materials Science & Technology 2024年第2期169卷 105-114页

作者： Deqing He Chunyu Zhu Yutao Huo zhonghao Rao School of Energy and Environmental Engineering Hebei University of TechnologyTianjin 300401China Hebei Key Laboratory of Thermal Science and Energy Clean Utilization Hebei University of TechnologyTianjin 300401China School of Low-carbon Energy and Power Engineering China University of Mining and TechnologyXuzhou 221116China

The sluggish redox reaction kinetics of lithium polysulfides(LiPSs)are considered the main obstacle to the commercial application of lithium-sulfur(Li-S)*** accelerate the conversion by catalysis and inhibit the shuttling of soluble LiPSs in Li-S batteries,a solution is proposed in this *** solution involves fabrication of N,S co-doped carbon coated In_(2)O_(3)/In_(2)S_(3)heterostructure(In_(2)O_(3)-In_(2)S_(3)@NSC)as a multifunctional host material for the *** In_(2)O_(3)-In_(2)S_(3)@NSC composite can reduce the Gibbs free energy for the conversion reactions of LiPSs,which results in superior *** synergy between different components in In_(2)O_(3)-In_(2)S_(3)@NSC and the unique 3D structure facilitate ion and electron transport in Li-S *** In_(2)O_(3)-In_(2)S_(3)@NSC/Li 2 S 6 cathode exhibits excellent rate capacity,with a capacity of 599 mAh g−1 at 5.5 C,and good cycle stability,with a capacity of 436 mAh g^(−1)after 1000 cycles at 1 ***,this study proposes a promising solution to improve the energy storage properties of Li-S batteries,which could potentially facilitate the commercialization of Li-S batteries.

关键词： Li-S battery Multifunctional host material Synergy Heterostructures Energy storage properties

Dark Solitary-Wave Solutions in Bulk Linear Media with Group Velocity Dispersion

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Chinese Physics Letters 1995年第7期12卷 396-399页

作者： LI zhonghao ZHOU Guosheng Department of Electronics and Information Science Shanxi UniversityTaiyuan 030006

A dark envelope solitary-wave solution in bulk dispersive linear media is obtained from the (3+1)-dimensional time-space coupled linear wave equation by taking account of the interplay between physical effects of transverse confinement and group velocity dispersion (GVD) effect under certain appropriate *** characteristics of the solution are discussed in both normal and anomalous GVD regions.

关键词： conditions. Dispersion wave

Challenges in various thermal energy storage technologies

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Science Bulletin 2017年第4期62卷 231-233页

作者： Chenzhen Liu zhonghao Rao School of Electrical and Power Engineering China University of Mining and Technology Xuzhou 221116 China

With the worsening of energy shortage and environmental pollution,energy storage has received much attention in the fields of renewable and sustainable energy in recent *** is widely known that energy storage is a technique storing excess energy in one form and converting it back to the same form or another when necessary[1].Especially energy storage occupies an important position in solar energy,wind energy and ocean ***,energy storage methods include mechanical energy storage,

关键词：热能储存技术可再生能源环境污染能源短缺能源领域储能

Green's function calculations of light nuclei

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Science China(Physics,Mechanics & Astronomy) 2016年第9期59卷 64-68页

作者： zhonghao Sun Qiang Wu FuRong Xu School of Physics Peking University

The influence of short-range correlations in nuclei was investigated with realistic nuclear force. The nucleon-nucleon interaction was renormalized with Vlowk technique and applied to the Green's function calculations. The Dyson equation was reformulated with algebraic diagrammatic constructions. We also analyzed the binding energy of 4He, calculated with chiral potential and CD-Bonn potential. The properties of Green's function with realistic nuclear forces are also discussed.

关键词： Green's function ab-initio calculations realistic nuclear forces

Numerical study on solid–liquid phase change in paraffin as phase change material for battery thermal management

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Science Bulletin 2016年第5期61卷 391-400页

作者： Qiannan Zhang Yutao Huo zhonghao Rao School of Electric Power Engineering China University of Mining and Technology Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education Southeast University

With the large latent heat and low cost, the paraffin has been widely used in battery thermal management(BTM) system to improve the efficiency and cycling life of power battery. The numerical model of paraffin melting in a cavity has been established, and the effects on the solid–liquid phase change process have been investigated for the purpose of enhancing the heat transfer performance of paraffin-based BTM system. The results showed that the location of the heating wall had great effects on the melting process. The paraffin in the cavity melted most quickly when the heating wall located at the bottom. Furthermore, the effects of thermal conductivity and the velocity of the slip wall have been considered. The gradient of liquid fraction increased with the increase in thermal conductivity, and the melting process could be accelerated or delayed by the slip wall with different velocity.

关键词： Phase change material Battery thermal management Solid–liquid phase change Heat flux Thermal conductivity