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Highly Stretchable and Elastic Polymer Electrolytes with High Ionic Conductivity and Li-Ion Transference Number for High-Rate Lithium Batteries

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Chinese Journal of Chemistry 2022年第21期40卷 2559-2567页

作者： Xinxin Qu Yue Guo xiaokong liu State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchunJilin130012China

The ever-growing demand for wearable electronics drives the development of stretchable lithium-ion batteries(LIBs)with fast charging capability,in which stretchable polymer electrolytes(PEs)with high ionic conductivity and lithium-ion transference numbers(urn:x-wiley:1001604X:media:cjoc202200287:cjoc202200287-math-0001)are highly ***,we report a highly stretchable and elastic PE with high ionic conductivity and urn:x-wiley:1001604X:media:cjoc202200287:cjoc202200287-math-0001,which is applicable in high-rate and stretchable *** PE was fabricated by incorporating polyethylene glycol(PEG)and lithium salts into polyurethane networks,whereinα-cyclodextrin(α-CD)acts as the *** PEG chains are cross-linked by covalent and noncovalent bonds,and some PEG chains enter into the cavity ofα-CD to form PEG/α-CD *** structural features effectively suppress crystallization of the PEG chains,hinder movement of the counterions of Li+,and endow PE with satisfactory mechanical robustness.

关键词： Lithium Polymerelectrolytes Rateperformance Energyconversion Polymers

A scalable one-pot strategy for the development of polymer electrolytes adaptable to room-temperature high-voltage lithium batteries

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Chinese Chemical Letters 2024年第3期35卷 461-467页

作者： Yue Guo Xinxin Qu Zhen Li Ruiyuan Tian xiaokong liu State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education) College of PhysicsJilin UniversityChangchun 130012China

Poly(ethylene oxide)(PEO)polymer electrolytes(PEs)have been commercially applied in LiFePO_(4)||Li solid-state lithium batteries(SSLBs).However,it remains challenging to develop PEO-based PEs applicable to the high-voltage SSLBs with higher energy density,owing to the poor electrochemical stability of ***,we report a scalable strategy for fabricating PEO-based PEs with high-voltage compatibility,by exploiting a new mechanism to stabilize the cathode-electrolyte interface in the highvoltage *** protocol only involves a one-pot synthesis procedure to covalently crosslink the PEO chains,in the presence of high-content lithium bis(trifluoromethylsulphonyl)imide(LiTFSI)salts and N,N-dimethylformamide(DMF).LiTFSI-DMF supramolecular aggregates are formed and firmly embedded in the polymer network,endowing the PE with high room-temperature ionic *** dissociated and highly concentrated TFSI^-anions can enter the Helmholtz layer close to the high-voltage cathode,leading to the formation of a thin and homogeneous cathode electrolyte interface(CEI),mainly composed of LiF,on the *** CEI with high electrochemical stability can effectively stabilize the cathode-electrolyte interface,enabling long-term stable cycling of the high-voltage LiCoO_(2)||Li and nickelrich NCM_(622)||Li batteries at room *** simplicity and scalability of the strategy makes the reported PEO-based PE potentially applicable in high-voltage SSLBs in practice.

关键词： Lithium batteries Polymer electrolytes Poly(ethylene oxide) Energy density High-voltage cathodes

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Polymer Science

Chemical Research in Chinese Universities 2023年第5期39卷 705-708页

作者： ZHANG Yuetao DONG Huanli SUN Zhaoyan DONG Zeyuan liu xiaokong State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012P.R.China Beijing National Laboratory for Molecular Science Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190P.R.China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022P.R.China

Polymer science is an interdisciplinary area,which is gradually developed on the basis of organic chemistry,physical chemistry,biochemistry,and other *** science is composed of two important branches:"polymer chemistry"and"polymer physics".It includes polymer materials,polymer synthesis,polymer theory and simulation,and many other research *** materials as an important cornerstone of modern industry and high technology exhibit many excellent *** have become an indispensable and important guarantee for the basic industry of the national economy and *** synthesis is the foundation of the polymer materials industry,which provides the methods for the preparation of polymer materials with different *** theory and simulation provides a solid theoretical foundation and more possibilities for the design of polymer materials.

关键词： properties. materials. polymer

Harvesting,sensing and regulating light based on photo-thermal effect of Cu@CuO mesh

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Green Energy & Environment 2017年第4期2卷 387-392页

作者： Xuan Wu Jie Xu George Y.Chen Rong Fan xiaokong liu Haolan Xu Future Industries Institute University of South Australia Mawson Lakes Campus Laser Physics and Photonic Devices Laboratories School of Engineering University of South Australia Mawson Lakes Campus School of Natural and Built Environments University of South Australia Mawson Lakes Campus

A system of light harvesting, sensing and regulating was designed based on the photo-thermal and Seebeck effect of flexible CuO nanostructures. Cu@CuO meshes were prepared via self-oxidation of Cu mesh and utilized as the photo-thermal material. Upon irradiation by visible light, the temperature of the Cu@CuO mesh dramatically increases. The temperature difference between the irradiated and non-irradiated parts of the Cu@CuO mesh produced a measurable voltage output due to the Seebeck effect. The generated voltage was then converted into a digital signal to control a rotary neutral-density disc to filter the received light. This enabled regulation of the intensity of the incident light at a selected region. This system is cost effective and has potential applications in greenhouses, factories and smart buildings to minimize energy consumption and improve wellbeing.

关键词： Photothermal Light CuO Nanostructure

Mechanically Strong and Highly Stiff Supramolecular Polymer Composites Repairable at Ambient Conditions

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CCS Chemistry 2020年第4期2卷 280-292页

作者： Jingjing Zhu George YChen Li Yu Haolan Xu xiaokong liu Junqi Sun State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012 Laser Physics and Photonic Devices Laboratories School of EngineeringUniversity of South AustraliaMawson LakesSouth Australia 5095 College of Health Science and Environmental Engineering Shenzhen Technology UniversityShenzhen 518118 Future Industries Institute University of South AustraliaMawson LakesSouth Australia 5095

It is a formidable challenge to fabricate healable polymeric materials with high mechanical strength and stiffness due to the highly suppressed diffusion of their polymer ***,a high-strength,highly stiff,andrepairable/healable supramolecular polymercomposite was fabricatedby complexingpoly(acrylic acid)(PAA)and poly(allylamine hydrochloride)(PAH)in aqueous solutions,followed by molding into desired *** tuning the electrostatic and H-bonding interactions between PAA and PAH led to associative phase-separation and in situ formation of nanostructures in the resultant PAA–PAH composites.

关键词： supramolecular polymers self-assembly self-healing materials supramolecular composites polymer complexes phase-separated nanostructures

邻近厚松散层既有立井井筒地面注浆地层加固技术

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煤炭科学技术 2022年第7期50卷 127-134页

作者：刘孝孔绪瑞华赵艳鹏程桦彭世龙周均民山东能源临沂矿业集团有限责任公司山东菏泽274000 临沂矿业集团菏泽煤电有限公司郭屯煤矿山东菏泽274000 安徽理工大学土木建筑学院安徽淮南232001 安徽建筑大学土木工程学院安徽合肥230601 安徽建筑大学建筑结构与地下工程安徽省重点实验室安徽合肥230601

为解决厚松散层既有立井井筒地面注浆加固技术难题,以山东巨野矿区郭屯煤矿厚松散层偏斜井筒地面注浆治理为工程背景,针对井筒偏斜特征,采用现场钻孔压水试验与地面高压注浆试验方法,分析不同注浆深度与注浆层段受注点试压水与注浆表头... 详细信息

为解决厚松散层既有立井井筒地面注浆加固技术难题,以山东巨野矿区郭屯煤矿厚松散层偏斜井筒地面注浆治理为工程背景,针对井筒偏斜特征,采用现场钻孔压水试验与地面高压注浆试验方法,分析不同注浆深度与注浆层段受注点试压水与注浆表头最大压力比值,获得了受注点注浆压力与该点静水压力比值,并得到了厚松散层主含水层的可注性及其注浆技术参数,最终确定了厚松散层偏斜井筒地面注浆治理方案设计原则与施工方案;研发了单井多层段注浆新型套管,形成了“注-泄”联合间歇注浆加固技术。研究结果表明:①当注浆压力达到静水压力的2.0~2.5倍时,水泥浆可顺利注入;②松散层深度越深,地层的单位吸浆量越小,同一注浆段,在相同压力情况下,压水流量是注浆量的2倍;③按注浆试验确定的设计注浆量与实际注浆量误差在27%以内,随着注浆孔的注浆,其邻近泄压孔出现孔管口出水、孔管口内返浆和串浆等现象,实现了泄压目的,且对邻近既有井筒受力变形影响较小;④注浆后,主、副、风井井筒表土段井壁淋水明显减小,且有回正的趋势。研究成果在郭屯煤矿厚松散层偏斜井筒地面高压注浆治理工程得到了成功应用。

关键词：厚松散层既有井筒泄压孔地面注浆地层加固

智能矿井安全生产大数据集成分析平台及其应用

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煤炭科学技术 2018年第12期46卷 169-176页

作者：毛善君刘孝孔雷小锋赵仁乐张明崔希国北京大学地球与空间科学学院北京100871 山东能源临沂矿业集团有限责任公司山东临沂276017 中国矿业大学江苏徐州221116

针对智能矿井建设需要监控实时化、系统集成化、数据海量化、控制协同化和决策在线化的实际需求,提出建立高度集成的大数据分析平台,为决策支持和协同管控服务。在阐述煤矿大数据特征的基础上,提出了服务于智能开采的大数据集成分析平... 详细信息

针对智能矿井建设需要监控实时化、系统集成化、数据海量化、控制协同化和决策在线化的实际需求,提出建立高度集成的大数据分析平台,为决策支持和协同管控服务。在阐述煤矿大数据特征的基础上,提出了服务于智能开采的大数据集成分析平台设计的具体要求,并对"一张图"协同管理、平台技术架构和数据处理流程进行了阐述;设计了由设备感知层、数据资源层、平台服务层、大数据分析应用层构成的系统总体架构;研究了数据集成、知识集成等技术,开发了包括煤矿安全状况评估打分子系统、煤矿安全问题推理解释子系统、诊断任务配置与管理子系统在内的安全生产大数据动态诊断系统。安全生产大数据集成分析平台在山东能源临沂矿业集团有限责任公司示范矿得到了全面应用,并已运行1年多,应用结果表明,该平台运行稳定可靠、效果显著。

关键词：智能矿井一张图煤矿安全生产大数据分析平台集成管理

四川丹巴金矿床金矿物学特征及黑铋金矿的指示意义

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黄金 2024年第2期45卷 75-79页

作者：马天祺黄睿刘效孔陈翠华成都理工大学地球科学学院四川师范大学文学院

丹巴金矿床是位于松潘—甘孜造山带东南缘典型的碲化物型金矿床。该矿床中发育大量明金与碲铋矿物。以叶碲铋矿和自然金为主要研究对象,通过显微岩相学观察、扫描电镜能谱分析,对自然金的矿物学特征进行了较为详细的研究。结果显示,丹... 详细信息

丹巴金矿床是位于松潘—甘孜造山带东南缘典型的碲化物型金矿床。该矿床中发育大量明金与碲铋矿物。以叶碲铋矿和自然金为主要研究对象,通过显微岩相学观察、扫描电镜能谱分析,对自然金的矿物学特征进行了较为详细的研究。结果显示,丹巴金矿床载金矿物主要有磁黄铁矿、黄铜矿、黄铁矿、叶碲铋矿、自然铋、黑铋金矿,大量自然金与叶碲铋矿、自然铋具有密切的时空关系,黑铋金矿的产出是铋熔体析出并清除金最直接的证据。

关键词：碲化物型丹巴金矿床黑铋金矿自然金矿物学特征松潘—甘孜造山带

单片机实验教学平台若干问题的思考及改进方案

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周口师范学院学报 2011年第2期28卷 59-61页

作者：徐坤吴定允周子昂李向东刘小孔周口师范学院物理与电子工程系河南周口466000 上蔡县第一职业高中河南上蔡463800

分析了目前商品化单片机实验教学平台存在的不足之处,提出了硬件资源分配灵活、具有系统性及较高可移植性的单片机实验教学平台设计方案.该方案以提高学生实践创新能力为出发点,经实践表明,该平台既能满足单片机日常实验教学任务,又能... 详细信息

分析了目前商品化单片机实验教学平台存在的不足之处,提出了硬件资源分配灵活、具有系统性及较高可移植性的单片机实验教学平台设计方案.该方案以提高学生实践创新能力为出发点,经实践表明,该平台既能满足单片机日常实验教学任务,又能在电子设计竞赛培训中发挥重要作用.

关键词：单片机电子设计实践创新