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Multivalent metal-sulfur batteries for green and cost-effective energy storage:Current status and challenges

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Journal of Energy Chemistry 2022年第1期31卷 144-165,I0005页

作者： Yue Yang Haoyi Yang xinran Wang Ying Bai Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

Multivalent metal-sulfur(M-S,where M=Mg,Al,Ca,Zn,Fe,etc.)batteries offer unique opportunities to achieve high specific capacity,elemental abundancy and cost-effectiveness beyond lithium-ion batteries(LIBs).However,the slow diffusion of multivalent-metal ions and the shuttle of soluble polysulfide result in impoverished reversible capacity and limited cycle performance of M-S(Mg-S,Al-S,Ca-S,Zn-S,Fe-S,etc.)*** is a necessity to optimize the electrochemical performance,while deepening the understanding of the unique electrochemical reaction mechanism,such as the intrinsic multi-electron reaction process,polysulfides dissoluti on and the in stability of metal an *** solve these problems,we have summarized the state-of-the-art progress of current M-S batteries,and sorted out the existing challen ges for different multivalent M-S batteries according to sulfur cathode,electrolytes,metallic an ode and current collectors/separators,*** this literature,we have surveyed and exemplified the strategies developed for better M-S batteries to strengthen the application of green,cost-effective and high energy density M-S batteries.

关键词： Multivale nt metal-sulfur batteries Cost-effectiveness Green energy storage Shuttle effect Electrolyte

High-Voltage Layered Ternary Oxide Cathode Materials:Failure Mechanisms and Modification Methods

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Chinese Journal of Chemistry 2020年第12期38卷 1847-1869页

作者： Xiaodan Wang Ying Bai xinran Wang Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science&EngineeringBeijing Institute of TechnologyNo.5 South Zhongguancun StreetBeijing 100081China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

Due to the large reversible capacity,high operating voltage and low cost,layered ternaryoxide cathode materials LiNixCoyAl-x-yO2(NCA)and LiNixCoyMn1-x-yO2(NCM)are considered asthe most potential candidate materials for lithium-ion batteries(LIBs)used in(hybrid)electricvehicles(EVs).However,next-generation long-range EVs require a high specific capacity(around 203 mAh·g^-1at 3.7V)at the cathode active material level,which is not provided withcurrent commercially layered ternary oxide *** the operating voltage is aneffective method to improve the specific capacity of the cathode and the energy density of the battery,but the high operating voltage also causes a lot of problems,such as cation mix-ing and phase transformation,electrolyte decomposition,transition metal dissolution *** far,researchers have carried out a lot of works to solve these ***,element doping and the design of electrolytes have been proved to be effective *** this review,the failure mechanisms and modification methods of high-voltage lay-ered ternary oxide cathode materials are summarized,which could provide valuable infor-mation to the research of high-voltage layered ternary oxide cathode materials in basic sci-ence and industrial production.

关键词： coating Ternary battery

Micro Morphology of Soot Particles Sampled from High Pressure Jet Flames of Diesel from Direct Coal Liquefaction

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Journal of Thermal Science 2022年第6期31卷 2155-2170页

作者： WANG Tengfei QIAO Xinqi LI Tie WU Gang WANG xinran Key Laboratory of Power Machinery and Engineering Ministry of EducationShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240China Merchant Marine College Shanghai Maritime UniversityShanghai 201306China

Diesel from direct coal liquefaction(DDCL) is a new type of engine alternative energy. But its hydrocarbon composition and physicochemical properties are quite different from those of Petro diesel. In this study, a premixed constant volume combustion chamber(CVCC) system with soot particle sampling devices was built. The soot particles in the spray flame were sampled and photographed by thermophoresis probe and transmission electron microscope(TEM). An automatic processing code based on Matlab software was developed to process the TEM images and extract the micro morphology parameters of the soot particles. This study has systematically studied the effects of sampling location, injection pressure, ambient density and oxygen concentration on the micro morphology of soot particles. The ambient density refers to the initial gas density in the CVCC. The results showed that various morphologies and sizes of soot particles coexisted in the upstream of the spray flame. During the evolution of soot particles from upstream to downstream in the flame, the size of soot aggregates gradually decreased, while the maturity of soot aggregates increased. With the increase of injection pressure, ambient density and oxygen concentration, the average sizes of soot aggregates and primary soot particles decreased, but the fractal dimensions of soot aggregates increased gradually. Under the same combustion condition and in-flame sampling location, the average projection area, gyration radius and primary soot diameter of soot aggregates produced by DDCL were significantly lower than those of Petro diesel. The structure of soot particles from DDCL was more compact than that of Petro diesel.

关键词： diesel from direct coal liquefaction in-flame sampling soot morphology TEM

Distribution of Protists in the Deep South China Sea Revealed by High-Throughput Sequencing

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Journal of Ocean University of China 2020年第1期19卷 161-170页

作者： LI xinran WARREN Alan JIAO Nianzhi XU Dapeng State Key Laboratory of Marine Environmental Science Institute of Marine Microbes and EcospheresCollege of Ocean and Earth SciencesXiamen UniversityXiamen 361102China Department of Life Sciences Natural History MuseumLondonSW75BDUK

Protists(microbial eukaryotes)are indispensable members of the marine microbial food *** recent years,organisms living in the deep sea(>1000 m water depth)have increasingly become the focus of research;however,studies on protistan assemblages are relatively scarce compared with their prokaryotic *** the present study,high-throughput sequencing of the hypervariable V9 region of the 18S rRNA gene was used to explore the community composition of protists in bathypelagic waters of the South China *** on the analysis of the alpha and beta diversities of 14 samples,we discovered:1、members belonging to Rhizaria,Alveolata,and Excavata were the dominant groups in terms of both relative sequence abundance and operational taxonomic unit(OTU)richness in all samples,although their relative contributions differed among different samples;2、cluster analysis showed that the distribution of protistan assemblages was related neither to the sampling location nor to the water depth,and other environmental factors might have caused the differences among the communities;3、phototrophs,including members of the Bacillariophyta,Bolidophyceae,Dictyochophyceae,Prasinophyceae,and Prymnesiophyceae,were detected in all samples,which indicated their contributions to the downward transportation via the biological pump and the potential presence of phagotrophy of these phototrophic cells in the deep ocean.

关键词： bathypelagic water diversity microbial eukaryotes SSU rRNA gene

Abiotic Hydrocarbons Generation Simulated by Fischer-Tropsch Synthesis under Hydrothermal Conditions in Ultradeep Basins

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Acta Geologica Sinica(English Edition) 2022年第4期96卷 1331-1341页

作者： ZHAO Zhongfeng LIU xinran LU Hong Peng Ping’an State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China CAS Center for Excellence in Deep Earth Science Guangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China

FTT experiments with water as a hydrogen source and three types of possible carbon sources in the subsurface(diiron nonacarbonyl,siderite and formic acid,representing CO,CO_(2)and a simple organic acid,respectively)were carried out in this *** experimental results showed that n-alkanes with the highest carbon number of C_(33)were produced when CO was used as a carbon source(series A);a variety of polycyclic aromatic hydrocarbons(PAHs)were detected in series B with CO_(2)as a carbon source;gaseous hydrocarbons were also detected with formic acid added(series C).The different products in the three series showed that there were different hydrocarbon generation mechanisms and reaction processes with different carbon *** generation of long-chain n-alkanes in series A provided experimental support for the formation of abiogenic petroleum underground,which was of significance to early membranes on the *** in series B provide experimental support for the possibility of an abiotic source of reduced carbon on other *** carbon isotopes of gaseous hydrocarbons produced by CO exhibited a partial reversed order(δ^(13)C_(1)δ^(13)C_(3)>δ^(13)C_(4)>δ^(13)C_(5)),while the gaseous hydrocarbons produced by CO_(2)and HCOOH showed a positive order(δ^(13)C_(1)<δ^(13)C_(2)<δ^(13)C_(3)<δ^(13)C_(4)<δ^(13)C_(5)).Based on these,the alkylene mechanism and the carbonyl insertion mechanism were used to reasonably explain these characteristics.

关键词： ultra-deep basin FTT carbon isotope reversed order abiogenic hydrocarbons hydrothermal experiments

High Sensitive Refractive Index Sensor Based on Cladding Etched Photonic Crystal Fiber Mach-Zehnder Interferometer

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Photonic Sensors 2019年第2期9卷 126-134页

作者： Haifeng DU Xiaoyan SUN Youwang HU xinran DONG Jianhang ZHOU State Key Laboratory of High Performance Complex Manufacturing College of Mechanical and Electrical EngineeringCentral South University Changsha 410083 China

A high sensitive refractive index sensor based on the cladding etched photonic crystal fiber (PCF) Mach-Zehnder interferometer (MZI) is proposed, which is spliced a section of photonic crystal fiber between two single modes fibers (SMFs).The interference fringe of the MZI shifts with the variation of the ambient refractive index (RI). It is found that the RI sensitivity slightly decrease with an increase in the interference length. The sensitivities of MZI with 35inm PCF, 40mm PCF, and 45mm PCF are 106.19nm/RIU, 93.33nm/RIU, and 73.64nm/RIU, respectively, in the range of 13.33 to 1.381. After etched, the RI sensitivity of the MZI could be improved obviously. The RI sensitivities of the MZI with 35 mm PCF are up to 211.53nm/RIU and 359.37nm/RIU when the cladding diameter decreases to 112(im and 91 pm, respectively. Moreover, the sensor is insensitive to temperature, and the measured sensitivity is only 9.21 pm/℃ with the range from 20℃ to 500℃. In addition, the sensor has advantage of simple fabrication, low cost, and high RI sensitivity.

关键词： Refractive index sensor Mach-Zehnder interferometer photonic crystal fiber hydrofluoric acid

Sulfone-based high-voltage electrolytes for high energy density rechargeable lithium batteries:Progress and perspective

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Chinese Chemical Letters 2021年第4期32卷 1309-1315页

作者： Wenya Wu Ying Bai xinran Wang Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China

Further enhancement in the energy density of rechargeable lithium batteries calls for high-voltage cathode materials and stable anodes,as well as matched high-voltage electrolytes without compromising the overall property of ***-based electrolytes have aroused great interest in recent years owing to their wide electrochemical window and high ***,significant challenges such as the complexity of synthesis,high melting point(typically above room temperature),high viscosity,and their poor compatibility with graphite-based anodes have drastically impeded their practical *** this review,recent progress of sulfone solvents in high energy density rechargeable lithium batteries is summarized theoretically and *** importantly,general improvement methods of sulfone-based electrolytes,such as adding additives and cosolvents,structural modifications of sulfo ne,superconcentrated salt strategy are briefly *** expect that this review provides inspiration for the future developments of sulfone-based high-voltage electrolytes(SHVEs)and their widespread applications in high specific energy lithium batteries.

关键词： Lithium batteries High voltage High energy density Sulfone-based electrolytes Optimizations

Nitrogen rejection from low quality natural gas by pressure swing adsorption experiments and simulation using dynamic adsorption isotherms

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Chinese Journal of Chemical Engineering 2022年第2期35卷 120-129页

作者： xinran Zhang Hua Shang Jiangfeng Yang Libo Li Jinping Li Research Institute of Special Chemicals College of Chemistry and Chemical EngineeringTaiyuan University of TechnologyTaiyuan 030024China Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization Taiyuan 030024China

In order to remove N_(2) from low quality natural gas,a mathematical model has been established by Aspen adsorption,using the CH_(4)-selective sorbent silicalite-1 *** dynamic adsorption isotherm was first simulated by breakthrough simulation of a CH_(4)/N_(2) mixture at different adsorption pressures and feed flow rates based on breakthrough *** resulting simulated CH_(4) dynamic adsorption amounts were very close to the experimental data at three different adsorption pressures(100,200,and 300 kPa).Moreover,a single-bed,three-step pressure swing adsorption(PSA)experiment was performed,and the results were in good agreement with the simulated data,further corroborating the accuracy of the gas dynamic adsorption isotherm obtained by the simulation ***,based on the simulated dynamic adsorption isotherm of CH_(4) and N_(2),a four-bed,eight-step PSA process has been designed,which enriched 75%(vol)CH_(4) and 80%(vol)CH_(4) to 95%(vol)and 99%(vol),and provided 99%(vol)recovery.

关键词： Natural gas Silicalite-1 Simulation Dynamic adsorption Pressure swing adsorption process

Insight to defects regulation on sugarcane waste-derived hard carbon anode for sodium-ion batteries

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Journal of Energy Chemistry 2021年第4期30卷 499-508页

作者： Kaihua Yu xinran Wang Haoyi Yang Ying Bai Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

A great deal of attention has been paid on developing plant-derived hard carbon(HC)materials as anodes for sodium-ion batteries(SIBs).So far,the regulation of HC has been handicapped by the well-known ambiguity of Na^(+)storage mechanism,which fails to differentiate the Na^(+)adsorption and Na^(+)insertion,and their relationship with the size of d-interlayer spacing and structural ***,bagassederived HC materials have been synthesized through a combination of pyrolysis treatment and microwave *** combined protocol has enabled to synergistically control the d-interlayer spacing and ***,the microwave activation has created slit pores into HC and these pores allow for an enhanced Na^(+)adsorption with an increased sloping capacity,establishing a strong correlation between the porosity and sloping ***,the pyrolysis treatment promotes the graphitization and it contributes to an intensified Na^(+)insertion with an increased plateau capacity,proving that the plateau capacity is largely contributed by the Na^(+)insertion between ***,the structural regulation of bagasse-derived HC has provided a proof on positively explaining the Na^(+)storage with HC *** structural changes in the pore size distribution,specific surface area,d-interlayer spacing,and the electrochemical properties have been comprehensively characterized,all supporting our understanding of Na^(+)storage *** a result,the HC sample with an optimized d-interlayer spacing and porosity has delivered an improved reversible capacity of 323.6 m Ah g^(-1) at 50 m A g^(-1).This work provides an understanding of Na^(+)storage mechanism and insights on enhancing the sloping/plateau capacity by rationally regulating the graphitization and porosity of HC materials for advanced SIBs.

关键词： Hard carbon Sodium-ion batteries Microwave activation Sodium storage mechanism