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Effect of LiTFSI and LiFSI on Cycling Performance of Lithium Metal Batteries Using Thermoplastic Polyurethane/Halloysite Nanotubes Solid Electrolyte

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Acta Metallurgica Sinica(English Letters) 2021年第3期34卷 359-372页

作者： Zhichuan shen Jiawei Zhong Wenhao Xle Jinbiao Chen Xi Ke Jianmin Ma zhicong Shi School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China Guangdong Engineering Technology Research Center for New Energy Materials and Devices Guangzhou 510006China School of Physics and Electronics Hunan UniversityChangsha 410082China

All-solid-state lithium batteries(ASSLB) are promising candidates for next-generation energy storage devices.Nevertheless,the large-scale commercial application of high energy density AS S LB with the polymer electrolyte still faces challenges.In this study,a thin solid polymer composite electrolyte(SPCE) is prepared through a facile and cost-effective strategy with an infiltration of thermoplastic polyurethane(TPU),lithium salt(LiTFSI or LiFSI),and halloysite nanotubes(HNTs) in a porous framework of polyethylene separator(PE)(TPU-HNTs-LiTFSI-PE or TPU-HNTs-LiFSI-PE).The composition,electrochemical performance,and especially the effect of anions(TFSI-and FSI-) on cycling performance are investigated.The results reveal that the flexible TPU-HNTs-LiTFSI-PE and TPU-HNTs-LiFSI-PE with a thickness of 34 μm exhibit wide electrochemical windows of 4.9 and 5.1 V(vs.Li+/Li) at 60℃,respectively.Reduction in FSI-tends to form more LiF and sulfur compounds at the interface between TPU-HNTs-LiFSI-PE and Li metal anode,thus enhancing the interfacial stability.As a result,cell composed of TPU-HNTs-LiFSI-PE exhibits a smaller increase in interfacial resistance of solid electrolyte interphase(SEI) with a distinct decrease in charge-transfer resistance during cycling.Li|Li symmetric cell with TPU-HNTs-LiFSI-PE could keep its stable overpotential profile for nearly 1300 h with a low hysteresis of approximately39 mV at a current density of 0.1 mA cm-2,while a sudden voltage rise with internal cell impedance-surge signals was observed within 600 h for cell composed of TPU-HNTs-LiTFSI-PE.The initial capacities of NCMITPU-HNTs-LiTFSIPEILi and NCMITPU-HNTs-LiFSI-PEILi cells were 149 and 114 mAh g-1,with capacity retention rates of 83.52% and89.99% after 300 cycles at 0.5 C,respectively.This study provides a valuable guideline for designing flexible SPCE,which shows great application prospect in the practice of ASSLB.

关键词： Solid polymer composite electrolyte Lithium metal anode Thermoplastic polyurethane Halloysite nanotubes Cycling performance

The critical role of inorganic nanofillers in solid polymer composite electrolyte for Li+transportation

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Carbon Energy 2021年第3期3卷 482-508页

作者： Zhichuan shen Yifeng Cheng Shuhui Sun Xi Ke Liying Liu zhicong Shi School of Materials and Energy Guangdong University of TechnologyGuangzhouChina Guangdong Engineering Technology Research Center for New Energy Materials and Devices GuangzhouChina Energie Materiaux et Telecommunications Center Inst itut National de la Recherche Scientifique(INRS)QuebecCanada

Compared with commercial lithium batteries with liquid electrolytes,all-solidstate lithium batteries(ASSLBs)possess the advantages of higher safety,better electrochemical stability,higher energy density,and longer cycle life;therefore,ASSLBs have been identified as promising candidates for next-generation safe and stable high-energy-storage devices.The design and fabrication of solid-state electrolytes(SSEs)are vital for the future commercialization of ASSLBs.Among various SSEs,solid polymer composite electrolytes(SPCEs)consisting of inorganic nanofillers and polymer matrix have shown great application prospects in the practice of ASSLBs.The incorporation of inorganic nanofillers into the polymer matrix has been considered as a crucial method to achieve high ionic conductivity for SPCE.In this review,the mechanisms of Li+transport variation caused by incorporating inorganic nanofillers into the polymer matrix are discussed in detail.On the basis of the recent progress,the respective contributions of polymer chains,passive ceramic nanofillers,and active ceramic nanofillers in affecting the Li+transport process of SPCE are reviewed systematically.The inherent relationship between the morphological characteristics of inorganic nanofillers and the ionic conductivity of the resultant SPCE is discussed.Finally,the challenges and future perspectives for developing high-performance SPCE are put forward.This review aims to provide possible strategies for the further improvement of ionic conductivity in inorganic nanoscale filler-reinforced SPCE and highlight their inspiration for future research directions.

关键词： all-solid-state lithium batteries inorganic nanofillers Li+transportation solid polymer composite electrolyte

Surface Sediment Density and Moisture Content in North slope of South China Sea

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Acta Geologica Sinica(English Edition) 2017年第S1期91卷 155-156页

作者： ZHANG Bowen ZHU Chaoqi JIA Yonggang ZHANG Xiatao DAI Xinnan SHEN Zhicong JIANG Jun WANG Xinquan Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering( Ocean University of China) Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and Technology

Marine engineering geology is mainly based on the actual project to study the seabed.This provides a variety of engineering geological parameters for the development of marine engineering(Zhu et al.,2016).This is an e... 详细信息

关键词： Surface Sediment Density and Moisture Content in North slope of South China Sea

SiO_(2) nanofiber composite gel polymer electrolyte by in-situ polymerization for stable Li metal batteries

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Chinese Chemical Letters 2023年第3期34卷 536-540页

作者： Zhichuan shen Jiawei Zhong Jiahong Chen Wenhao Xie Kun Yang Yuhan Lin Jinbiao Chen zhicong Shi School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China

Gel polymer electrolytes(GPEs) are promising alternatives to liquid electrolytes applied in high-energydensity batteries.Here superior SiO_(2) nanofiber composite gel polymer electrolytes(SNCGPEs) are developed via in-situ ionic ring-opening polymerization of 1,3-dioxolane(DOL) monomers in SiO_(2) nanofiber membrane(PDOL-SiO_(2)) for lithium metal batteries.The oxygen atoms of PDOL together with Si-O of SiO_(2) construct a more efficient channel for Li^(+) migration.Consequently,the lithium ion transference number(t_(Li^(+)) and ionic conductivity(σ) at 30℃ of PDOL-SiO_(2) are 0.80 and 1.68×10^(-4)S/cm separately.PDOL-SiO_(2) manifests the electrochemical decomposition potentials of 4.90 V.At 0.5 mA/cm^(2),Li|PDOL-SiO_(2) |Li cell shows a steady cycling performance for nearly 1400 h.LFP|PDOL-SiO_(2) |Li battery can steadily cycle at 0.5 C with a capacity retention rate of 89% after 200 cycles.While cycling at 2 C,the capacity retention rate can maintain at 78% after 300 cycles.This contribution provides a innovative strategy for accelerating Li^(+)transportation via designing PDOL molecular chains throughout the SiO_(2) nanofiber framework,which is crucial for high-energy-density LMBs.

关键词： SiO_(2)nanofiber In-situ polymerization Composite gel polymer electrolytes 1 3-Dioxolane Lithium metal-LFP battery

Progress in Global Gas Hydrate Development and Production as a New Energy Resource

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Acta Geologica Sinica(English Edition) 2019年第3期93卷 731-755页

作者： LIU Liping SUN Zhilei ZHANG Lei WU Nengyou Yichao Qin JIANG Zuzhou GENG Wei CAO Hong ZHANG Xilin ZHAI Bin XU Cuiling SHEN Zhicong JIA Yonggang College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100ShandongChina Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266071ShandongChina The Key Laboratory of Gas Hydrate Ministry of Natural ResourcesQingdao Institute of Marine GeologyQingdao 266071ShandongChina Drilling Technology Research Institute of shengli Petroleum Engineering Corporation Limited SINOPECDongying 257017ShandongChina Linyi University Linyi276000ShandongChina

Natural gas hydrates have been hailed as a new and promising unconventional alternative energy,especially as fossil fuels approach depletion,energy consumption soars,and fossil fuel prices rise,owing to their extensive distribution,abundance,and high fuel efficiency.Gas hydrate reservoirs are similar to a storage cupboard in the global carbon cycle,containing most of the world's methane and accounting for a third of Earth's mobile organic carbon.We investigated gas hydrate stability zone burial depths from the viewpoint of conditions associated with stable existence of gas hydrates,such as temperature,pressure,and heat flow,based on related data collected by the global drilling programs.Hydrate-related areas are estimated using various biological,geochemical and geophysical tools.Based on a series of previous investigations,we cover the history and status of gas hydrate exploration in the USA,Japan,South Korea,India,Germany,the polar areas,and China.Then,we review the current techniques for hydrate exploration in a global scale.Additionally,we briefly review existing techniques for recovering methane from gas hydrates,including thermal stimulation,depressurization,chemical injection,and CH4-CO2 exchange,as well as corresponding global field trials in Russia,Japan,United States,Canada and China.In particular,unlike diagenetic gas hydrates in coarse sandy sediments in Japan and gravel sediments in the United States and Canada,most gas hydrates in the northem South China Sea are non-diagenetic and exist in fine-grained sediments with a vein-like morphology.Therefore,especially in terms of the offshore production test in gas hydrate reservoirs in the shenhu area in the north slope of the South China Sea,Chinese scientists have proposed two unprecedented techniques that have been verified during the field trials:solid fluidization and formation fluid extraction.Herein,we introduce the two production techniques,as well as the so-called"fbur-in-one"environmental monitoring system employed during the shenhu production te

关键词： natural gas hydrate gas recovery production technique shallow gas hydrate environmental monitoring

基于GTM设计方法的钢渣沥青混凝土试验研究

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山东交通科技 2023年第1期 70-72页

作者：张智聪申铁军山西路桥第一工程有限公司山西太原030006 山西路桥建设集团有限公司山西太原030006

为提高沥青混凝土上面层的力学性能及稳定性能,提出GTM设计方法对沥青混合料进行设计,设计参数采用力学指标,成型采用旋转压实方式,得到SMA-13型改性沥青混合料目标配合比并应用于山西省首个钢渣沥青混凝土路面工程,研究结果表明,相比... 详细信息

为提高沥青混凝土上面层的力学性能及稳定性能,提出GTM设计方法对沥青混合料进行设计,设计参数采用力学指标,成型采用旋转压实方式,得到SMA-13型改性沥青混合料目标配合比并应用于山西省首个钢渣沥青混凝土路面工程,研究结果表明,相比于马歇尔试验方法,GTM法设计沥青混合料路用性能于体积参数均体现出新特点,沥青混合料试件的胶结料含量较低、密度较高、空隙率及矿料间隙率较小、饱和度较大。混合料的抗水破坏的能力、抗高温车辙能力、抗疲劳能力及低温抗裂能力都有所提高。

关键词：道路路面沥青混凝土 GTM方法钢渣试验

碳化钨复合涂层的制备技术及其耐磨耐蚀性的研究进展

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腐蚀与防护 2024年第4期45卷 46-53页

作者：陈志聪黄超刘威沈利民中国矿业大学化工学院徐州221116 国家煤加工与洁净化工程技术研究中心徐州221116

碳化钨涂层具有化学稳定性高、硬度大和耐磨性好等特点,常用于金属表面涂层的制备。从碳化钨涂层的不同制备原理出发,综述了超声速火焰喷涂、等离子喷涂、等离子熔覆、激光熔覆和真空熔覆等碳化钨涂层制备技术的国内外研究进展,分析了... 详细信息

碳化钨涂层具有化学稳定性高、硬度大和耐磨性好等特点,常用于金属表面涂层的制备。从碳化钨涂层的不同制备原理出发,综述了超声速火焰喷涂、等离子喷涂、等离子熔覆、激光熔覆和真空熔覆等碳化钨涂层制备技术的国内外研究进展,分析了不同制备技术下涂层的耐磨性和耐蚀性,探讨了涂层制备技术存在的问题和未来的研究方向。

关键词：碳化钨涂层超声速火焰喷涂等离子喷涂等离子熔覆激光熔覆真空熔覆

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教育中神经神话的可视化分析及教育启示

华东师范大学学报（教育科学版） 2023年第8期41卷 63-78页

作者：周加仙张志聪陈丹沈洁华东师范大学教育学部教育心理学系/教育神经科学研究中心上海200062

丰富的教育神经科学成果促进了教育事业的纵深发展和改革。而在这个过程中,对神经科学成果的误解和误读却造成了一个亟需清除的障碍——“神经神话”。神经神话在教育系统中普遍存在的这一现状,严重影响到教师的教学效率和学生的发展。... 详细信息

丰富的教育神经科学成果促进了教育事业的纵深发展和改革。而在这个过程中,对神经科学成果的误解和误读却造成了一个亟需清除的障碍——“神经神话”。神经神话在教育系统中普遍存在的这一现状,严重影响到教师的教学效率和学生的发展。目前这方面的研究还没有引起国内学者的足够重视。因此,本研究对2012—2022年来发表的关于神经神话的文献进行了可视化分析与总结,揭示了神经神话流行的现状、影响因素及干预措施,最后提出了一些教育启示和建议。

关键词：神经神话教师教育可视化分析教育神经科学

水合物直井与水平井产气效果分析——以神狐海域SH2站位为例

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海洋工程 2019年第4期37卷 107-116页

作者：申志聪王栋贾永刚中国海洋大学环境科学与工程学院山东青岛266100 山东省海洋环境地质工程重点实验室山东青岛266100 海洋科学与技术国家实验室海洋地质过程与环境功能实验室山东青岛266061

以现有的南海神狐海域SH2钻孔资料为基础,建立起了与试采站位类似的“水合物层—游离气层”成藏模型,利用TOUGH+Hydrate数值模拟软件,对开采井内产气的来源问题做出了定量解释;分别使用直井和水平井降压开采方式,对“水合物层—游离气... 详细信息

以现有的南海神狐海域SH2钻孔资料为基础,建立起了与试采站位类似的“水合物层—游离气层”成藏模型,利用TOUGH+Hydrate数值模拟软件,对开采井内产气的来源问题做出了定量解释;分别使用直井和水平井降压开采方式,对“水合物层—游离气层”的储层进行了产气效率、储层开采程度方面的比较。结果表明:1)对研究工况,使用直井降压开采时,前100d内井内气体有16%是直接来源于下部游离气层,且仍有很大部分游离气是向上迁移至水合物层中后产出,最终游离气层的贡献可达40%左右;2)直井开采易生成二次水合物,而使用水平井开采时,游离气的向上迁移会带动更深层热液的向上运动,能在很大程度上提高水合物分解速率,并能够防止二次水合物的形成;3)对研究工况中的“水合物层—游离气层”储层进行长期开采时,水平井降压开采更具应用前景。

关键词：天然气水合物南海水平井直井产气效率游离气饱和度