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ZnS nanolayer coated hollow carbon spheres with enhanced rate and cycling performance for Li-S batteries

Science China(Technological Sciences) 2022年第2期65卷 272-281页

作者： MENG FanCheng XU Bin LONG Tao CHENG Sheng LI Yong ZHANG YongYi liu jiehua School of Materials Science and Engineering Engineering Research Centre of High-Performance Copper Alloy Materials and ProcessingMinistry of EducationHefei University of TechnologyHefei 230009China Division of Nanomaterials and Jiangxi Key Lab of Carbonene Materials Suzhou Institute of Nano-Tech and Nano-BionicsNanchangChinese Academy of SciencesNanchang 330200China Instrumental Analysis Centre Hefei University of TechnologyHefei 230009China School of Instrument Science and Opto-electronics Engineering Hefei University of TechnologyHefei 230009China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Advanced Materials DivisionSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China

Conductive carbon structure has been considered as a promising sulfur-hosting material as the cathode of lithium-sulfur batteries.However, the issue of polysulfide shuttling requires an additional component to help restrict and convert sulfur substances.Herein, in this work, hollow and porous carbon nanospheres(HCS) are synthesized by a template method and a high-temperature carbonization treatment. A thin layer of ZnS coating is then deposited on the HCS-based sulfur(ZnS@HCS/S) cathode with controlled thickness, and the overall electrochemical properties are systematically evaluated. Results show that with 30 nm-thick ZnS coating, the cathode reveals an improved capacity of 1411 m A h g^(-1), and higher capacities from 0.2 to 3 C rate compared with bare HCS/S cathode. Moreover, the ZnS coating also enhances the cycling stability of ZnS@HCS/S cathode over 280 cycles at 0.5 C, with only 0.2% capacity decay per cycle. This work demonstrates potential applications for high-performance lithiumsulfur batteries.

关键词： lithium-sulfur battery ZnS nanolayer hollow carbon sphere rate performance cycling stability

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Natural nori-based porous carbon composite for sustainable lithium-sulfur batteries

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Science China(Technological Sciences) 2022年第10期65卷 2380-2387页

作者： liu Hu liu WeiLin MENG FanCheng JIN LiangYu LI ShuLin CHENG Sheng JIANG ShuDong ZHOU RuLong liu jiehua School of Materials Science and Engineering Hefei University of TechnologyHefei 230009China Instrumental Analysis Centre Hefei University of TechnologyHefei 230009China College of Chemistry and Chemical Engineering Anhui UniversityHefei 230601China

The practical applications of lithium-sulfur(Li-S)batteries are limited by the low conductivity of sulfur and the shuttle effect of soluble polysulfides during the charge-discharge process.At the same time,biomass-based carbon materials have been acknowledged as the cost-effective and direct settlement to mitigate or overcome these problems due to their renewability,facile processing,and pollution-free characteristics.Therefore,in this work,we report the natural nori-based CoO nanoparticles decorated hierarchical porous carbon(HPC)for high-capacity Li-S battery cathodes.The HPC with an extremely high surface area of 2089 m^(2)g^(−1)provides a good substrate for the accommodation of CoO nanoparticles,which can effectively seize the lithium polysulfides and facilitate their redox conversion.As a result,the CoO-HPC/S cathode exhibits a high discharge capacity of 1557.1 mA h g^(−1),as well as excellent rate performance and cycling stability.Due to the naturally abundant nori-based cathode materials,the resultant Li-S battery is supposed to be an attractive and sustainable energy storage device.

关键词： biomass sustainable porous carbon cathode Li-S battery

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The strategies of advanced cathode composites for lithium-sulfur batteries

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Science China(Technological Sciences) 2017年第2期60卷 175-185页

作者： ZHOU Kuan FAN XiaoJing WEI XiangFeng liu jiehua Future Energy Laboratory School of Materials Science and Engineering Hefei University of Technology Hefei 230009 China School of Chemistry and Chemical Engineering Hefei University of Technology Hefei 230009 China

Lithium-sulfur batteries have been widely nominated as one of the most promising next-generation electrochemical storage systems due to its low cost, high capacity and energy density. However, its practical application is still hindered by poor cycling lifetime, low Coulombic efficiency, instability and small scales. In the last decade, the electrochemical performances of the lithium-sulfur batteries have been improved by developing various novel nanoarchitectures as qualified hosts, and enhancing the sulfur loading with effective encapsulating strategies. The review summarizes the major sulfur cooperating strategies of cathodes based on background and latest progress of the lithium-sulfur batteries. The novel cooperating strategies of physical techniques and chemical synthesis techniques are discussed in detail. Based on the rich chemistry of sulfur, we paid more attention to the highlights of sulfur encapsulating strategies. Furthermore, the critical research directions in the coming future are proposed in the conclusion and outlook section.

关键词：锂离子电池电池正极复合材料电化学性能存储系统能量密度循环寿命正极材料

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A Review on Some Applications of Magnesia in Current China Refractories Industry

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China's Refractories 2006年第2期15卷 7-10页

作者： liu jiehua Sinosteel Luoyang Institute of Refractories Research （ LIRR） Luoyang Henan 471039 China

Magnesia-based refractories hold a big share in the total refractories output in China because of abundance of magnesite resource. In this paper a short review has been focused on the current and future new use of magnesia in the production of magnesia-based products including low carbon MgO-C bricks, MgO- CaO bricks, MgO-based castables, MgO-CaO-Fe2O3 ramming mix and MgO-CaO-C bricks for low carbon steelmaking and clean steel making, magnesite ball for slag splashing, MgO-CaO-ZrO2 for sintering and transfering zones of cement kiln and MgAlON for special use in the steel industry.

关键词： Magnesia-based refractories Magnesia ball Magnesia carbon bricks Magnesia-dolomite and magnesia-calcia-zirconia bricks MgAlON materials

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磷铵装置气氨供给改进与热量利用

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磷肥与复肥 2024年第2期39卷 47-48页

作者：刘杰华陆盛涛云南云天化红磷化工有限公司

云南云天化红磷化工有限公司氨站供给气氨量有限，无法满足生产需求。介绍磷铵装置生产中气氨供给存在的问题，包括磷酸一铵装置液氨蒸发器故障频繁，气氨输送管道热损失大。通过对氨站供氨系统进行技术改造，对气氨输送管道增加保温措... 详细信息

云南云天化红磷化工有限公司氨站供给气氨量有限，无法满足生产需求。介绍磷铵装置生产中气氨供给存在的问题，包括磷酸一铵装置液氨蒸发器故障频繁，气氨输送管道热损失大。通过对氨站供氨系统进行技术改造，对气氨输送管道增加保温措施并验证可行性，提高了各装置应对突发事故的能力，气氨热量得到了合理利用，且氨站气氨供给量可以满足装置使用需求。

关键词：磷铵装置气氨改进热量利用

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Development of Thermal Shock Resistant and Low Creep Bricks for Hot Blast Stove

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China's Refractories 2005年第4期14卷 8-12页

作者： LIN Binyin liu jiehua ZHOU Ningsheng ZHANG Jianwu Gongyi No. 5 Refractories Head Factory Gongyi City 400045 China Editorial Board of China＇ s Refractories LIRR Luoyang 471039 China High-Temp. Materials Institue Henan University of Science and Technology Luoyang 471043 China

The paper describes the ries with high thermal shock development of brick seresistance and low creep rate for hot blast stove, including research target and research plan on the basis of analysis on how to enhance the thermal shock resistance and to lower creep rate of the bricks. Efforts have been made on the selection of starting materials such as corundum, mullite, andalusite and sillimanite etc., together with some measures taken on multi-grade formulation, homogenizing of the matrix of bricks and addition of some special additives. The results indicated that the bricks were with characteristics such as higher thermal shock resistance of 〉 30 cycles under quenching in water from 1000℃, and creep rate of 0. 2 under 1400℃ for 20 -50hrs with load of 0.2 MPa. Now a series of products of this kind have been developed and produced. The application of the products in Wuhan Iron and Steel Co. showed very prospective results. Now most of domestic large sized blast furnaces say ≥- 1000m^3, including those of Baoshan Iron and Steel Co. , have selected the series products made by Gongyi No. 5 Refractories Head Factory（GYWN） for their hot blast stoves.

关键词： Refractory bricks Hot blast stove,Low creep Thermal shock resistance Andalusite,Mullite Corundum Sillimanite

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Biomass-derived porous carbon materials for advanced lithium sulfur batteries

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Journal of Energy Chemistry 2019年第7期28卷 171-185页

作者： Poting liu Yunyi Wang jiehua liu Future Energy Laboratory School of Materials Science and Engineering Hefei University of Technology

Biomass, as the most widely used carbon sources, is the main ingredient in the formation of fossil fuels. Biomass-derived novel carbons(BDNCs) have attracted much attention because of its adjustable physical/chemical properties, environmentally friendliness, and considerable economic value. Nature contributes to the biomass with bizarre microstructures with micropores, mesopores or hierarchical pores.Currently, it has been confirmed that biomass has great potential applications in energy storage devices,especially in lithium-sulfur(Li–S) batteries. In this article, the synthesis and function of BDNCs for Li–S batteries are presented, and the electrochemical effects of structural diversity, porosity and surface heteroatom doping of the carbons in Li-S batteries are discussed. In addition, the economic benefits, new trends and challenges are also proposed for further design excellent BDNCs for Li–S batteries.

关键词： Biomass-derived carbon materials Lithium-sulfur battery Porous carbon Carbohydrate Cellulose

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Carbon Catabolite Repressor UvCreA is Required for Development and Pathogenicity in Ustilaginoidea virens

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Rice science 2024年第2期31卷 203-214,I0029-I0031页

作者： XIE Shuwei SHI Huanbin WEN Hui liu Zhiquan QIU jiehua JIANG Nan KOU Yanjun State Key Laboratory of Rice Biology and Breeding China National Rice Research InstituteHangzhou 311400China

The rice false smut disease, caused by Ustilaginoidea virens, has emerged as a significantglobal threat to rice production. The mechanism of carbon catabolite repression plays a crucial role in theefficient utilization of carbon nutrients and enzyme regulation in the presence of complex nutritionalconditions. Although significant progress has been made in understanding carbon catabolite repression infungi such as Aspergillus nidulans and Magnaporthe oryzae, its role in U. virens remains unclear. Toaddress this knowledge gap, we identified UvCreA, a pivotal component of carbon catabolite repression,in U. virens. Our investigation revealed that UvCreA localized to the nucleus. Deletion of UvCreA resultedin decreased growth and pathogenicity in U. virens. Through RNA-seq analysis, it was found that theknockout of UvCreA led to the up-regulation of 514 genes and down-regulation of 640 genes. Moreover,UvCreA was found to be involved in the transcriptional regulation of pathogenic genes and genesassociated with carbon metabolism in U. virens. In summary, our findings indicated that UvCreA isimportant in fungal development, virulence, and the utilization of carbon sources through transcriptionalregulation, thus making it a critical element of carbon catabolite repression.

关键词： Ustilaginoidea virens virulence carbon catabolite repression Oryza sativa rice false smut

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Recent advances in interlayer and separator engineering for lithium-sulfur batteries

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Journal of Energy Chemistry 2021年第6期30卷 41-60,I0002页

作者： Deming Zhu Tao Long Bin Xu Yixin Zhao Haitao Hong Ruijie liu Fancheng Meng jiehua liu School of Materials Science and Engineering Engineering Research Center of High Performance Copper Alloy Materials and ProcessingMinistry of EducationHefei University of TechnologyHefei 230009AnhuiChina Division of Nanomaterials Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesNanchang 330200JiangxiChina

Lithium-sulfur(Li-S)batteries have great potential in next-generation energy storage due to its high theoretical specific capacity and energy density.However,there are several challenges to the practical application of Li-S batteries including the growth of lithium dendrites and the shuttle effect of polysulfide.Introducing interlayeres(freestanding or coated on the separator)is an effective approach to reduce these obstacles and improve the electrochemical performance of Li-S batteries.In this review,we briefly summarize the interlayer materials and structures modified on both cathodic and anodic sides including(ⅰ)carbon-based materials,(ⅱ)polymers,(ⅲ)inorganic metal compounds,(iv)metal-organic frameworks,as well as(v)the novel separators in recent years.We also systematically address the fabrication processes,assembling methods,and functions of interlayers for enhancing the performance of Li-S batteries.Furthermore,the prospects and outlooks of the future development of advanced interlayers and separators are also presented.

关键词： Li-S battery Interlayer Separator Polysulfide Dendrite

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Advanced chemical strategies for lithium-sulfur batteries: A review

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Green Energy & Environment 2018年第1期3卷 2-19页

作者： Xiaojing Fan Wenwei Sun Fancheng Meng Aiming Xing jiehua liu Future Energy Laboratory School of Materials Science and EngineeringHefei University of Technology

Lithium-sulfur(Li-S) battery has been considered as one of the most promising rechargeable batteries among various energy storage devices owing to the attractive ultrahigh theoretical capacity and low cost. However, the performance of Li-S batteries is still far from theoretical prediction because of the inherent insulation of sulfur, shuttling of soluble polysulfides, swelling of cathode volume and the formation of lithium dendrites. Significant efforts have been made to trap polysulfides via physical strategies using carbon based materials, but the interactions between polysulfides and carbon are so weak that the device performance is limited. Chemical strategies provide the relatively complemented routes for improving the batteries' electrochemical properties by introducing strong interactions between functional groups and lithium polysulfides. Therefore, this review mainly discusses the recent advances in chemical absorption for improving the performance of Li-S batteries by introducing functional groups(oxygen, nitrogen, and boron, etc.) and chemical additives(metal, polymers, etc.) to the carbon structures, and how these foreign guests immobilize the dissolved polysulfides.

关键词： Lithium-sulfur batteries Chemical reaction Lithium polysulfides Functional groups Additives

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