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Stable sodium metal anode enhanced by advanced electrolytes with SbF_(3) additive

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Rare Metals 2021年第2期40卷 433-439页

作者： Wei Fang Rui Jiang hao zheng Yi zheng Yi Sun Xin Liang Hong-Fa Xiang Yue-Zhan Feng Yan Yu School of Materials Science and Engineering Engineering Research Center of High Performance Copper Alloy Materials and ProcessingMinistry of EducationHefei University of TechnologyHefei230009China Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou450002China Hefei National Laboratory for Physical Sciences at the Microscale Department of Materials Science and EngineeringKey Laboratory of Materials for Energy ConversionChinese Academy of Sciences(CAS)University of Science and Technology of ChinaHefei230026China Dalian National Laboratory for Clean Energy(DNL) Chinese Academy of Sciences(CAS)Dalian116023China

The practical application of sodium metal batteries(SMBs)is hampered due to the inferior interfacial stability between Na metal and conventional ***,a high-concentration electrolyte is proposed to solve this ***,high viscosity,low ionic conductivity,and unsatisfactory wettability toward the separator need to be *** this study,a localized highconcentration electrolyte(LHCE)is formulated with1 wt%SbF_(3)as an interface-stabilized additive to protect the Na metal *** reformulated LHCE retains the special coordination structure in HCE with improved wettability and high ionic ***,the introduction of the SbF_(3)additive into the LHCE resulted in a bilayer-structured solid electrolyte interface(SEI)including a Na-Sb alloy inner layer and a NaF-rich outer layer on the Na *** expected,the NaIINa cells using LHCE+1 wt%SbF_(3)show a long cycle lifespan of over1200 h at 0.5 mA·cm^(-2)with negligible polarization,and NaIINa_(3)V_(2)(PO_(4))_(3)cells exhibit a high capacity exceeding 97 mAh·g^(-1)at 40 C.

关键词： Sodium metal battery Localized highconcentration electrolyte SbF_(3)additive Wettability Conductivity

Probability stopping criterion for analog decoding of LDPC codes

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The Journal of China Universities of Posts and Telecommunications 2017年第1期24卷 35-39页

作者： zheng hao Zhang Shuyi Li Lintao Gao Yuan Shao Liwei School of Information and Electronics Beijing Institute of TechnologyBeijing 100081China School of Telecommunication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China Research Institute of Beijing Institute of Technology in Zhongshan Zhongshan 528400China

To detect uncorrectable frames and terminate the decoding procedure early, a probability stopping criterion for iterative analog decoding of low density parity check （LDPC） codes is proposed in this paper. By using probabilities of satisfied checks to detect uncorrectable frames and terminate decoding, the proposed criterion could be applied to analog decoders without much structure modifications. Simulation results show that the proposed criterion can reduce the average number of iterations and achieve a better balance in bit error ratio （BER） performance and decoding complexity than other stopping criteria using extrinsic information.

关键词： LDPC codes analog decoding early stopping probability stopping criterion

Structure of Allozymatic Diversity of Ten Temperate and Adapted Exotic Breeding Populations of Maize (Zea mays L.)

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Agricultural Sciences in China 2009年第8期8卷 920-930页

作者： zheng Da-hao YU Yang WANG Zhen-ping LI Yan-ru Agricultural College Yanbian University Longjing 133400 P.R.China Crop Tillage and Cultivation Institute Heilongjiang Academy of Agricultural Sciences Harbin 150086 P.R. China Tonghua Academy of Agricultural Sciences Meihekou 135000 P.R. China

Ten temperate and adapted exotic breeding populations of maize were studied with electrophoretic techniques. Three isozyme systems coded by nine allozyme loci were used for evaluating the genetic variability within and among populations. The results revealed that 78.57% of allozyme loci were polymorphic. Low allelic variation with a mean number of 1.84 alleles per locus per population was detected. But, these populations still maintained higher level of heterozygosity; moreover, the exotic populations had greater gene diversity than the temperate populations. All the populations were non-panmictic with negative Wright＇s fixation indexes （-0.091— -0.424）. The tropical BS 16 was typified by maximum allelic richness, percent of polymorphic loci and heterozygosity. More than 93% of the gene diversity maintained within populations, and the genetic differentiation among populations was low （0.002—0.191）. Multivariate analysis demonstrated that the tropical BS29 diverged from other populations in the reverse direction. The temperate BS9 and tropical BS16 were divergent each other, and highly differentiated from other temperate and tropical populations, consequently, these two populations would be analogically postulated as potential germplasms to establish new heterotic groups for temperate maize breeding programs.

关键词： maize breeding population allozyme diversity structure multivariate analysis

Uniquely identifying topological order based on boundary-bulk duality and anyon condensation

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National Science Review 2023年第3期10卷 117-126页

作者： Yong-Ju Hai Ze Zhang hao zheng Liang Kong Jiansheng Wu Dapeng Yu Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Department of Physics Southern University of Science and Technology International Quantum Academy Guangdong Provincial Key Laboratory of Quantum Science and Engineering

Topological order is a new quantum phase that is beyond Landau’ s symmetry-bre aking *** defining features include robust degenerate ground states,long-range entanglement and *** was known that R and F matrices,which characterize the fusion-braiding properties of anyons,can be used to uniquely identify topological *** this article,we explore an essential question:how can the R and F matrices be experimentally measured?We show that the braidings,*** R matrices,can be completely determined by the half braidings of boundary excitations due to the boundary-bulk duality and the anyon *** F matrices can also be measured by comparing the quantum states involving the fusion of three anyons in two different *** we provide a model-independent experimental protocol to uniquely identify topological *** using quantum simulations based on a toric code model with boundaries encoded in three-and four-qubit systems and state-of-the-art technology,we obtain the first experimental measurement of R and F matrices by means of an NMR quantum computer at room temperature.

关键词： topological order R matrix F matrix bulk-boundary duality anyon condensation

Resource utilization of typical biomass wastes as biochars in removing plasticizer diethyl phthalate from water: characterization and adsorption mechanisms

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Frontiers of Environmental Science & Engineering 2023年第1期17卷 49-61页

作者： Mei Shi Xiao Wang Mengying Shao Lun Lu Habib Ullah hao zheng Fengmin Li Institute of Coastal Environmental Pollution Control College of Environmental Science and EngineeringKey Laboratory of Marine Environment and Ecology(Ministry of Education)Ocean University of ChinaQingdao 266100China State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment South China Institute of Environmental SciencesMinistry of Ecology and EnvironmentGuangzhou 510655China Department of Environmental Science Zhejiang UniversityHangzhou 310058China Marine Ecology and Environmental Science Laboratory Pilot National Laboratory for Marine Science and TechnologyQingdao 266071China Sanya Oceanographic Institution Ocean University of ChinaSanya 572000China

Plastic pollution as a global environmental issue has become a research hotspot,among which the removal of inherent plasticizer(e.g.,phthalic acid esters,PAEs)received increasing ***,the effects of biochars derived from different feedstocks on the adsorption of PAEs are poorly ***,the characteristics of biochars derived from six largely produced biomass wastes in China at 400°C,as well as their performance in adsorption of diethyl phthalate(DEP),one of frequently detected PAEs in aqueous environment,were *** results indicated that the variation in feedstock type showed significant changes in the properties(e.g.,porosity,specific surface area,surface functional groups)of biochars,which affected DEP adsorption and *** order and Freundlich models fitted the adsorption data well,and adsorption mechanisms mainly included hydrophobic effect,followed by micropore filling,hydrogen bonding,andπ-πEDA *** thermodynamics revealed that the adsorption was a spontaneous and exothermic the adsorption capacities of DEP on these biochars slightly decreased with the increasing pH but increased with the increasing ionic *** these biochars,the giant reed biochar with relatively higher DEP adsorption and low desorption exhibited the great efficiency for DEP removal as an environment-friendly *** results highlighted the significant roles of micropore filling and hydrogen bond in determining adsorption capacity of designed biochars prepared from selecting suitable agricultural straws and wetland plant waste to typical *** findings are useful for producing designed biochars from different biomass wastes for plasticizer pollution control.

关键词： Plastic pollution Phthalic acid esters Designed biochar Wetland plant Adsorption

Self-assembled uniform double-shelled Co_(3)V_(2)O_8 hollow nanospheres as anodes for high-performance Li-ion batteries

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Rare Metals 2021年第12期40卷 3485-3493页

作者： hao zheng Xiao Chen Yun Yang Lin Li Chuan-Qi Feng Shi-Quan Wang Key Laboratory of Functional Materials and Chemistry for Performance and Resources of the Guizhou Education Department Anshun UniversityAnshun 561000China Key Laboratory for Synthesis and Applications of Organic Functional Molecules Hubei UniversityWuhan 430062China e-mail:cfeng@***

Hollow micro-/nanostructures have achieved great success in the field of renewable battery materials by reducing the volume change and promoting the ion ***-shelled Co_(3)V_(2)O__(8)hollow nanospheres(CVODSS)were synthesized using a facile solvothermal method followed by a thermal treatment in the absence of any ***,two other architectures of hollow nanospheres and nanoparticles were obtained by changing the annealing *** from the desired hollow structure,the CVO-DSS electrode exhibits excellent lithium storage properties as an *** exhibits a reversible discharge capacity of 1210 m Ah·g^(-1)at200 m A·g^(-1)after 100 cycles and a satisfactorily high rate capacity of 628 m Ah·g^(-1)after 800 cycles at 5000 m A·g^(-1).These hollow nanostructures can efficiently enhance the contact area of the electrolyte/electrode interface,promote the diffusion of lithium ions and electrons and slow down the capacity loss during long cycles.

关键词： Co_(3)V_(2)O_8 Hollow nanospheres Double-shelled Anode materials Electrochemical properties

Fieldwork Test Research of the Impact on Building Physical Environment on Six Types of Atrium Space in Cold Climates

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Journal of Harbin Institute of Technology(New Series) 2014年第4期21卷 84-90页

作者： Ye-hao Song Jun-Jie Li Ning Zhu Jia-Liang Wang zheng-hao Lin School of Architecture Tsinghua University Key Laboratory of Urban-Rural Eco Planning & Green Building Ministry of EducationTsinghua University

Since the research on verification to passive design strategies in sustainable building is at the initial stage,and its test method and verification conclusion are not scientific enough to validate,this paper proposes the necessity of building physical environmental monitoring to quantitative optimization of passive strategies efficiency from the perspective of architecture design and building environment. Adopting comparative research method,this research chooses six types of atrium space in cold climate in China as a prototype,focusing on building physical environmental performance difference in and between atrium and building main space. Spatial parameters of the atrium space will be divided into four factors: spatial geometry,interfacial properties,internal and external related categories. With subdividing these four factors into sub-factors,this paper makes crosscomparison among the sub-factors to clarify passive strategies effectiveness in atrium. Data comparison analysis shows that Winter atrium passive strategy in cold regions from traditional view is not obvious in practical application,and test data need to be stratified refined in atrium design in case of optimizing passive strategy from building prototype perspective.

关键词： atrium space building physical environment fieldwork test space effect

Construction of Human Digital Twin Model Based on Multimodal Data and Its Application in Locomotion Mode Identifcation

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Chinese Journal of Mechanical Engineering 2023年第5期36卷 7-19页

作者： Ruirui Zhong Bingtao Hu Yixiong Feng hao zheng Zhaoxi Hong Shanhe Lou Jianrong Tan State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China Engineering Research Center for Design Engineering and Digital Twin of Zhejiang Province Hangzhou 310027China Hangzhou Innovation Institute Beihang UniversityHangzhou 310052China School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingapore 637460Singapore

With the increasing attention to the state and role of people in intelligent manufacturing, there is a strong demand for human-cyber-physical systems (HCPS) that focus on human-robot interaction. The existing intelligent manufacturing system cannot satisfy efcient human-robot collaborative work. However, unlike machines equipped with sensors, human characteristic information is difcult to be perceived and digitized instantly. In view of the high complexity and uncertainty of the human body, this paper proposes a framework for building a human digital twin (HDT) model based on multimodal data and expounds on the key technologies. Data acquisition system is built to dynamically acquire and update the body state data and physiological data of the human body and realize the digital expression of multi-source heterogeneous human body information. A bidirectional long short-term memory and convolutional neural network (BiLSTM-CNN) based network is devised to fuse multimodal human data and extract the spatiotemporal features, and the human locomotion mode identifcation is taken as an application case. A series of optimization experiments are carried out to improve the performance of the proposed BiLSTM-CNN-based network model. The proposed model is compared with traditional locomotion mode identifcation models. The experimental results proved the superiority of the HDT framework for human locomotion mode identifcation.

关键词： Human digital twin Human-cyber-physical system Bidirectional long short-term memory Convolutional neural network Multimodal data

Design,Simulation and Kinematic Validation of a Hip Prosthetic Mechanism with a Multimotor Function

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Journal of Bionic Engineering 2024年第3期21卷 1321-1333页

作者： Majun Song Zhongyi Li Jingjing Jiang Weihai Chen Sheng Guo hao zheng Lianzheng Niu Hangzhou Innovation Institute Beihang UniversityHangzhou310051China Hangzhou Huacheng Software Technology Co.Ltd. Hangzhou310051China School of Mechanical Electronic and Control EngineeringBeijing Jiaotong UniversityBeijing100044China

We previously developed a powered hip prosthetic mechanism with kinematic functions of hip flexion-extension and abduction-adduction,and its theoretical and simulation-based kinematics were *** internal-external hip rotation has a positive effect on the movements of human lower limbs according to medical research,we developed a novel hip prosthetic mechanism based on a previous hip prosthesis that possesses motion characteristics similar to those of a human bionic hip,and the motion characteristics of multiple Degrees-of-Freedom(DoFs)were analyzed after kinematic ***,a walking model of the human‒machine model was established,and the walking stability of an amputee,which reflects the rehabilitation effect,was explored while the hip prosthetic mechanism considered the internal-external rotation of the ***,a prototype and its verification platform were built,and kinematic validation of the hip prosthetic mechanism was carried *** results showed that the designed Parallel Mechanism(PM)possesses human-like motion characteristics similar to those of a human bionic hip and can be used as a hip ***,the existing motion characteristic of internal-external hip rotation can enhance the walking stability of an amputee via this hip prosthetic mechanism.

关键词： Hip prosthetic mechanism Parallel mechanism Walking stability Kinematic validation