检索结果-南通市图书馆

The influence of silica on reaction rates and molecular hydrogen(H_(2))generation during olivine hydrothermal alteration

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2024年第1期67卷 222-233页

作者： Ruifang HUANG Weidong SUN Xing DING yusheng zhao Yibing LI Xiuqi SHANG CAS Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China SUSTech Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhen 518055China Center of Deep Sea Research Institute of OceanologyChinese Academy of SciencesQingdao 266071China State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Institue of Geology Chinese Academy of Geological SciencesBeijing 100037China

Hydrothermal alteration of olivine greatly influences geodynamics and the recycling of volatiles(such as water and carbon)in subduction *** is an important component of geological fluids,and its influence on the hydrothermal alteration of olivine remains poorly *** this study,we performed experiments at 300–515℃ and 3.0 kbar(1 bar=10^(5)Pa)by reacting well homogenized mixtures of olivine and silica powders with saline solutions(0.5 mol L^(−1)NaCl).Silica greatly influences the reaction pathways,reaction rates,and molecular hydrogen(H_(2))formation during olivine hydrothermal *** experiments at 300℃ and 3.0 kbar with mixtures of olivine and 10 wt%silica,olivine was replaced by serpentine and *** proportions of serpentine and talc were determined according to standard curves based on infrared spectroscopy *** 6.5%serpentine and 12%talc were produced after an experimental duration of 7 days,which had no change after a longer period(14 days).Compared to the kinetics in silica-free systems,the rates of olivine hydrothermal alteration in experiments with 10 wt%silica are much *** overall reaction is:4.5Forsterite+5.5SiO_(2),aq+4H_(2)O=Serpentine+*** the addition of more silica(20 wt%and 40 wt%),olivine was transformed into *** rates of reaction were much faster,e.g.,for experiments with olivine and 20 wt%silica,43%of talc was produced after 14 days,which increased to 77%for experiments with 40 wt%silica over the same *** overall reaction is:3Forsterite+5SiO_(2),aq+2H_(2)O=*** experiments at 400–505℃ and 3.0 kbar,the promoting effect of silica on olivine hydrothermal alteration was also observed,which is closely associated with a decrease in Gibbs free energies of olivine hydrothermal *** 300℃ and 3.0 kbar,silica decreased H_(2)formed during olivine hydrothermal alteration by around an order of magnitude,resulting in an increase in oxygen *** on measured H_(2),we calibrated ox

关键词： Olivine hydrothermal alteration Silica Serpentinization Hydrogen Serpentine

Elucidating the suppression of lithium dendrite growth with a void-reduced anti-perovskite solid-state electrolyte pellet for stable lithium metal anodes

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第2期77卷 62-69,I0003页

作者： Yu YeXinyan Ye Haoxian Zhu Juncao Bian Haibin Lin Jinlong Zhu yusheng zhao Shenzhen Key Laboratory of Solid State Batteries Southern University of Science and TechnologyShenzhen 518055GuangdongChina Academy for Advanced Interdisciplinary Studies&Department of Physics Southern University of Science and TechnologyShenzhen 518055GuangdongChina Guangdong Provincial Key Laboratory of Energy Materials for Electric Power Southern University of Science and TechnologyShenzhen 518055GuangdongChina Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Southern University of Science and TechnologyShenzhen 518055GuangdongChina

Solid-state lithium-metal batteries,with their high theoretical energy density and safety,are highly promising as a next-generation battery *** the alternatives proposed as solid-state electrolyte,lithium-rich anti-perovskite(Li RAP)materials have drawn the most interest because of high theoretical Li^(+)conductivity,low cost and easy *** solid-state electrolytes are believed to have the potential to physically inhibit the lithium dendrite growth,lithium-metal batteries still suffer from the lithium dendrite growth and thereafter the short *** voids in practical Li RAP pellets are considered as the root ***,we show that reducing the voids can effectively suppress the lithium dendrite *** voids in the pellet resulted in an irregular Li^(+)flux distribution and a poor interfacial contact with lithium metal anode;and hence the ununiform lithium ***,the lithium-metal symmetric cell with void-reduced Li_(2)OHCl-HT pellet was able to display excellent cycling performance(750 h at 0.4 m A cm^(-2))and stability at high current density(0.8 m A cm^(-2)for 120 h).This study provides not only experimental evidence for the impact of the voids in Li RAP pellets on the lithium dendrite growth,but also a rational pellet fabrication approach to suppress the lithium dendrite growth.

关键词： Llithium-rich anti-perovskite Solid-state electrolytes Void-reduced pellets Lithium dendrites Lithium metal anodes

Electrolyte solvation chemistry for lithium-sulfur batteries with electrolyte-lean conditions

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2021年第4期30卷 80-91页

作者： Long Kong Lihong Yin Fei Xu Juncao Bian Huimin Yuan Zhouguang Lu yusheng zhao Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhen 518055GuangdongChina Department of Physics Southern University of Science and TechnologyShenzhen 518055GuangdongChina Department of Materials Science and Engineering Guangdong Provincial Key Laboratory of Energy Materials for Electric PowerSouthern University of Science and TechnologyShenzhen 518055GuangdongChina Technische Universität Dresden Bergstrasse 6601062DresdenGermany

Lithium-sulfur(Li-S)batteries possess overwhelming energy density of 2654 Wh kg-1,and are considered as the next-generation battery technology for energy demanding *** electrolytes are ubiquitously employed in cells to ensure sufficient redox kinetics and preclude the interference of the electrolyte depletion due to side reactions with the lithium metal *** strategy is capable of enabling long-lasting,high-capacity and excellent-rate battery performances,but it mask the requirements of practical Li-S batteries,where high-sulfur-loading/content and lean electrolyte are prerequisite to realize the energy-dense Li-S *** and highly solvating electrolytes have emerged as effective yet simple approaches to decrease the electrolyte/sulfur ratio through altering sulfur species and exerting new reaction *** solvating electrolytes are characterized by few free solvents to solvate lithium polysulfides,rendering a quasi-solid sulfur conversion and decoupling the reaction mechanisms from electrolyte quantity used in cells;while highly solvating electrolytes adopt highdonicity or high-permittivity solvents and take their advantages of strong solvation ability toward polysulfide intermediates,thereby favoring the polysulfide formation and stabilizing unique radicals,which subsequently accelerate redox *** solvation chemistry approaches have their respective features to allow the operation of cells under electrolyte-starved *** Review discusses their unique features and basic physicochemical properties in the working Li-S batteries,presents remaining technical and scientific issues and provides future directions for the electrolyte chemistry to attain highenergy Li-S batteries.

关键词： Li-S batteries Solvation chemistry Energy density Polysulfides Lean electrolyte

A fiber-reinforced solid polymer electrolyte by in situ polymerization for stable lithium metal batteries

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第7期16卷 9259-9266页

作者： Yifan Xu Ruo zhao Lei Gao Tingsong Gao Wenjuan Wang Juncao Bian Songbai Han Jinlong Zhu Qiang Xu yusheng zhao Institute for Advanced Study Shenzhen UniversityShenzhen 518055China Guangdong Provincial Key Laboratory of Energy Materials for Electric Power Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and DevicesAcademy for Advanced Interdisciplinary StudiesSouthern University of Science and TechnologyShenzhen 518055China Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials Department of Materials Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China School of Materials Science and Engineering Peking UniversityBeijing 100871China

Solid polymer electrolytes(SPEs)by in situ polymerization are attractive due to their good interfacial contact with *** reported in situ polymerized SPEs,however,suffer from the low polymerization degree that causes poor mechanical strength,Li dendrite penetration,and performance decay in Li-metal *** highly polymerized SPEs are more stable than lowly polymerized ones,they are restricted by their sluggish long-chain mobility and poor ionic *** this work,a three-dimensional fibrous membrane with ion selectivity was prepared and used as a functional filler for the in situ formed *** obtained SPE has high stability due to its high polymerization degree after the long-term heating *** fibrous membrane plays a vital role in improving the SPE’s *** rich anion-adsorption sites on the fibrous membrane can alleviate the polarization effect and benefit a uniform current distribution at the *** fibrous nanostructure can efficiently interact with the polymeric matrix,providing rich hopping sites for fast Li+***,the obtained SPE enables a uniform Li deposition and long-term cycling performance in Li-metal *** work reported an in situ formed SPE with both high polymerization degree and ionic conductivity,paving the way for designing high-performance SPEs with good comprehensive properties.

关键词： solid polymer electrolytes fibrous solid filler metal-organic frameworks in situ polymerization ion selectivity

Distribution and Form of Iron and Calcium Compounds Before and After Residue Hydrogenation Under Different Space Velocities

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Petroleum Processing & Petrochemical Technology 2022年第3期24卷 86-94页

作者： Wang Xianyuan Zhang Tao Zhang Longli zhao yusheng Yang Chaohe Cui Ruili College of Chemistry and Chemical Engineering China University of Petroleum(East China)Qingdao 266580 CNPC Petrochemical Research Institute Beijing 102206 State Key Laboratory of Heavy Oil China University of Petroleum(East China)Qingdao 266580

The distribution and form of iron and calcium compounds were studied using hydrogenation feedstock and hydrogenation products with different space velocities as the research *** content of metallic elements,such as calcium and iron in hydrogenation feedstock,and extract samples were determined via flame atomic absorption *** water-soluble iron and calcium species in oil samples were determined by an IC2010 high-throughput ion *** 60%-80%of the iron or calcium compounds were mainly concentrated in resins and *** and calcium compounds mainly exist in the form of oil-soluble metal species in hydrogenation feedstock and hydrogenation *** certain conditions of reaction temperature,pressure,and volume ratio of hydrogen to oil,when the reaction space velocity was 0.6 h^(−1),about 30%of the iron or calcium compounds were converted from oil-soluble to water-soluble species after *** the reaction space velocity was decreased from 1.70 to 0.60 h^(−1),the proportion of iron compounds converted from oil-soluble to water-soluble increased from 8.4%to 28%.Moreover,the proportion of calcium compounds converted from oil-soluble to water-soluble increased from 10%to 37%.This denotes that with decreasing reaction space velocity,the ratio of oil-soluble to water-soluble species ***-soluble iron and calcium compounds are present in the form of inorganic salts,such as chlorate and *** study helps in understanding the removal mechanism of iron and calcium compounds and optimizing the operating conditions of residue hydrogenation.

关键词： residue hydrogenation space velocity iron compounds calcium compounds species

Filtering for SNPs with high selective constraint augments mid-parent heterosis predictions in wheat(Triticum aestivum L.)

在线全文

学校读者我要写书评

暂无评论

The Crop Journal 2023年第1期11卷 166-176页

作者： Abhishek Gogna Jie Zhang Yong Jiang Albert W.Schulthess yusheng zhao Jochen C.Reif Leibniz Institute of Plant Genetics and Crop Plant Research(IPK) 06466 Stadt SeelandGermany

To extend the contemporary understanding into the grain yield heterosis of wheat, the current study investigated the contribution of deleterious alleles in shaping mid-parent heterosis(MPH). These alleles occur at low frequency in the genome and are often missed by automated genotyping platforms like SNP arrays. The deleterious alleles herein were detected using a quantitative measurement of evolutionary conservation based on the phylogeny of wheat and investigations were made to:(1) assess the benefit of including deleterious alleles into MPH prediction models and(2) understand the genetic underpinnings of deleterious SNPs for grain yield MPH using contrasting crosses viz. elite × elite(Exp. 1) and elite × plant genetic resources(PGR;Exp. 2). In our study, we found a lower allele frequency of moderately deleterious alleles in elites compared to PGRs. This highlights the role of purifying selection for the development of elite wheat cultivars. It was shown that deleterious alleles are informative for MPH prediction models: modelling their additive-by-additive effects in Exp. 1 and dominance as well as associated digenic epistatic effects in Exp. 2 significantly boosts prediction accuracies of MPH. Furthermore,heterotic-quantitative trait loci's underlying MPH was investigated and their properties were contrasted in the two crosses. Conclusively, it was proposed that incomplete dominance of deleterious alleles contributes to grain yield heterosis in elite crosses(Exp. 1).

关键词： Hybrid wheat Genomic evolutionary rate profiling Deleterious SNP Heterotic Quantitative trait loci

Effects of fluorination on crystal structure and electrochemical performance of antiperovskite solid electrolytes

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第2期77卷 521-528,I0013页

作者： Lei Gao Manrong Song Ruo zhao Songbai Han Jinlong Zhu Wei Xia Juncao Bian Liping Wang Song Gao Yonggang Wang Ruqiang Zou yusheng zhao School of Materials Science and Engineering Peking UniversityBeijing 100871China Guangdong Provincial Key Laboratory of Energy Materials for Electric Power Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and DevicesAcademy for Advanced Interdisciplinary StudiesSouthern University of Science and TechnologyShenzhen 518055GuangdongChina Institute for Advanced Study Shenzhen UniversityShenzhen 518055GuangdongChina

The development of all-solid-state lithium batteries(ASSLBs)depends on exploiting solid-state electrolytes(SSEs)with high ionic conductivity and electrochemical *** is generally considered to be an effective strategy to improve the ionic conductivity and electrochemical stability of inorganic ***,we report the partial fluorination of the chlo rine sites in an antiperovskite,by which the orthorhombic Li_(2)OHCl was transformed into cubic Li_(2)OHCl_(0.9)F_(0.1),resulting in a fourfold increase in ionic conductivity at 30℃.The ab initio molecular dynamics simulations suggest that both the crystal symmetry and the anions electronegativity influence the diffusion of Li+in the antiperovskite ***,from the perspective of experiments and calculations,it is confirmed that fluorination is a feasible method to improve the electrochemical stability of antiperovskite *** LiFePO_(4)|Li cell based on Li_(2)OHCl_(0.9)F_(0.1) is also assembled and exhibits stable cycle performance,which indicates that fluorination of antiperovskite SSEs is an effective way to produce high-performance SSEs for practical application of ASSLBs.

关键词： Antiperovskite Solid-state electrolyte Fluorination Ionic conductivity

Anti-perovskite materials for energy storage batteries

在线全文

学校读者我要写书评

暂无评论

InfoMat 2022年第2期4卷 1-23页

作者： Zhi Deng Dixing Ni Diancheng Chen Ying Bian Shuai Li zhaoxiang Wang yusheng zhao Department of Physics and Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhenChina Key Laboratory of Energy Conversion and Storage Technologies(Southern University of Science and Technology) Ministry of EducationShenzhenChina Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesInstitute of PhysicsChinese Academy of SciencesBeijingChina College of Materials Science and Opto-Electronic Technology and School of Physical Sciences University of Chinese Academy of SciencesBeijingChina

Anti-perovskites X3BA,as the electrically inverted derivatives of perovskites ABX3,have attracted tremendous attention for their good performances in multiple disciplines,especially in energy storage *** Li/Na-rich antiperovskite(LiRAP/NaRAP)solid-state electrolytes(SSEs)typically show high ionic conductivities and high chemical/electrochemical stability toward the Li-metal anode,illustrating their great potential for applications in the Limetal batteries(LMBs)using nonaqueous liquid electrolyte or all-solid-state *** antiperovskites have been studied as artificial solid electrolyte interphase for Li-metal anode protection,film SSEs for thin-film batteries,and low melting temperature solid electrolyte enabling melt-infiltration for the manufacture of all-solid-state lithium *** metal-doped LiRAPs as cathodes have demonstrated a high discharge specific capacity and good rate capability in the Li-ion batteries(LIBs).Additionally,the underlying scientific principles in antiperovskites with flexible structural features have also been extensively *** this review,we comprehensively summarize the development,structural design,ionic conductivity and ion transportation mechanism,chemical/electrochemical stability,and applications of some antiperovskite materials in energy storage *** perspective for enhancing the performance of the antiperovskites is also provided as a guide for future development and applications in energy storage.

关键词： antiperovskite chemical and electrochemical stability energy storage solid-state electrolyte

Application of neutron imaging in observing various states of matter inside lithium batteries

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

National Science Review 2023年第11期10卷 192-208页

作者： Lei Gao Songbai Han Haijin Ni Jinlong Zhu Liping Wang Song Gao Yonggang Wang Dubin Huang yusheng zhao Ruqiang Zou School of Materials Science and Engineering Peking University Academy for Advanced Interdisciplinary Studies Southern University of Science and Technology Department of Physics Southern University of Science and Technology Eastern Institute for Advanced Study

Lithium batteries have been essential technologies and become an integral part of our daily lives, powering a range of devices from phones to electric vehicles. To fully understand and optimize the performance of lithium batteries, it is necessary to investigate their internal states and processes through various characterization methods. Neutron imaging has been an indispensable complementary characterization technique to X-ray imaging or electron microscopy because of the unique interaction principle between neutrons and matter. It provides particular insights into the various states of matter inside lithium batteries,including the Li+concentration in solid electrodes, the Li plating/stripping behavior of Li-metal anodes,the Li+diffusion in solid ionic conductors, the distribution of liquid electrolytes and the generation of *** review aims to highlight the capabilities and advantages of neutron imaging in characterizing lithium batteries, as well as its current state of application in this field. Additionally, we discuss the potential of neutron imaging to contribute to the ongoing development of advanced batteries through its ability to visualize internal evolution.

关键词： lithium battery neutron imaging electrodes electrolytes