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Enhancing structure and cycling stability of Ni-rich layered oxide cathodes at elevated temperatures via dual-function surface modification

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Journal of Energy chemistry 2022年第12期75卷 301-309,I0008页

作者： Ying-De Huang Han-xin Wei Pei-Yao Li yu-Hong Luo Qing wen Ding-Hao Le zhen-Jiang He Hai-Yan Wang You-Gen Tang Cheng Yan Jing Mao Ke-Hua Dai xia-Hui Zhang Jun-Chao zheng School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina National Engineering laboratory for High Efficiency Recovery of Refractory Nonferrous Metals Central South UniversityChangsha 410083HunanChina Engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South UniversityChangsha 410083HunanChina Hunan Provincial key laboratory of Chemical Power Sources College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083HunanChina School of Mechanical Medical and Process EngineeringQueensland University of TechnologyBrisbane 4001QueenslandAustralia School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina College of chemistry Tianjin Normal UniversityTianjin 300387China School of Mechanical and Materials Engineering Washington State UniversityPullman 99164WashingtonUSA

High-nickel single-crystal layered oxide material has become the most promising cathode material for electric vehicle power battery due to its high energy ***,this material still suffers from structural degradation during cycling and especially the severe interfacial reactions at elevated temperatures that exacerbate irreversible capacity ***,a simple strategy was used to construct a dualfunction Li_(1.5)Al_(0.5)Ge_(1.5)P_(3)O_(12)(LAGP)protective layer on the surface of the high-nickel single-crystal(SC)cathode material,leading to SC@LAGP *** strong Al-O bonding effectively inhibits the release of lattice oxygen(O)at elevated temperatures,which is supported by the positive formation energy of O vacancy from first-principal ***,theoretical calculations demonstrate that the appropriate amount of Al doping accelerates the electron and Li^(+)transport,and thus reduces the kinetic *** addition,the LAGP protective layer alleviates the stress accumulation during cycling and effectively reduces the erosion of materials from the electrolyte decomposition at elevated *** obtained SC@LAGP cathode material demonstrates much enhanced cycling stability even at high voltage(4.6 V)and elevated temperature(55℃),with a high capacity retention of 91.3%after 100 *** work reports a simple dual-function coating strategy that simultaneously stabilizes the structure and interface of the single-crystal cathode material,which can be applied to design other cathode materials.

关键词： Lithium-ion battery Ni-rich cathode Dual-function coating Single-crystalline Elevated temperature

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Natural Nanofibrous Cellulose-Derived Solid Acid Catalysts

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Research 2019年第1期2019卷 1043-1053页

作者： zhen-yu Wu Peng Yin Huan-xin Ju Zhi-Qin Chen Chao Li Si-Cheng Li Hai-Wei Liang Jun-Fa Zhu Shu-Hong yu Division of Nanomaterials&chemistry Hefei National Laboratory for Physical Sciences at the MicroscalCAS Center for Excellence in NanoscienceHefei Science Center of CASCollaborative Innovation Center of Suzhou Nano Science and TechnologyDepartment of ChemistryUniversity of Science and Technology of ChinaHefei 230026China National Synchrotron Radiation laboratory University of Science and Technology of ChinaHefei 230026China

Solid acid catalysts(SACs)have attracted continuous research interest in past years as they play a pivotal role in establishing environmentally friendly and sustainable catalytic processes for various chemical *** of low-cost and efcient SACs applicable to diferent catalysis processes are of immense signifcance but still very challenging so ***,we report a new kind of SACs consisting of sulfonated carbon nanofbers that are prepared via incomplete carbonization of low-cost natural nanofbrous cellulose followed by sulphonation with sulfuric *** prepared SACs feature nanofbrous network structures,high specifc surface area,and abundant sulfonate as well as hydroxyl and carboxyl ***,the nanofbrous SACs exhibit superior performance to the state-of-the-art SACs for a wide range of acid-catalyzed reactions,including dimerization of�-methylstyrene,esterifcation of oleic acid,and pinacol *** present approach holds great promise for developing new families of economic but efcient SACs based on natural precursors via scalable and sustainable protocols in the future.

关键词： holds incomplete establishing

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Research progress of CO_(2)oxidative dehydrogenation of propane to propylene over Cr-free metal catalysts

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Rare Metals 2022年第7期41卷 2129-2152页

作者： Zhong-yu Wang zhen-Hong He Long-Yao Li Shao-Yan Yang Meng-xin He Yong-Chang Sun Kuan Wang Jian-Gang Chen Zhao-Tie Liu Shaanxi key laboratory of Chemical Additives for Industry College of Chemistry and Chemical EngineeringShaanxi University of Science and TechnologyXi’an 710021China School of chemistry and Chemical Engineering Shaanxi Normal UniversityXi’an 710119China

CO_(2)-assisted oxidative dehydrogenation of propane(CO_(2)-ODHP)is an attractive strategy to offset the demand gap of propylene due to its potentiality of reducing CO_(2)emissions,especially under the demands of peaking CO_(2)emissions and carbon *** introduction of CO_(2)as a soft oxidant into the reaction not only averts the over-oxidation of products,but also maintains the high oxidation state of the redox-active ***,the presence of CO_(2)increases the conversion of propane by coupling the dehydrogenation of propane(DHP)with the reverse water gas reaction(RWGS)and inhibits the coking formation to prolong the lifetime of catalysts via the reverse Boudouard *** effective catalyst should selectively activate the C–H bond but suppress the C–C ***,to prepare such a catalyst remains ***-based catalysts are always applied in industrial application of DHP;however,their toxic properties are harmful to the *** this aspect,exploring environment-friendly and sustainable catalytic systems with Cr-free is an important *** this review,we outline the development of the CO_(2)-ODHP especially in the last ten years,including the structural information,catalytic performances,and mechanisms of chromium-free metal-based catalyst systems,and the role of CO_(2)in the *** also present perspectives for future progress in the CO_(2)-ODHP.

关键词： Propane Dehydrogenation Propylene CO_(2) Chromium-free metals Catalytic performance

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Chelating Guanidinates for Dysprosium(Ⅲ) Single-Molecule Magnets

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Chinese Journal of chemistry 2021年第6期39卷 1635-1640页

作者： Peng-Bo Jin Ke-xin yu yuan-Qi Zhai Qian-Cheng Luo Yi-Dian Wang Xu-Feng Zhang Yi Lv Yan-zhen zheng xi'an Jiaotong University Shenzhen Research School Frontier Institute of Science and Technology(FIST)State Key Laboratory of Mechanical Behavior for MaterialsMOE Key Laboratory for Nonequilibrium Synthesis of Condensed MatterXi’an Key Laboratory of Sustainable Energy and Materials ChemistrySchool of Physics and School of ChemistryXi’an Jiaotong University99 Yanxiang RoadXi’anShaanxi 710054China Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi'an Jiootong University277 West Yanta RoadXi'anShaanxi 710061China

Two chelating guanidinate-based dysprosium(Ⅲ)complexes,namely the monomeric{(Me_(3)Si)_(2)NC(N^(i)Pr)_(2)}_(2)Dy(μ-CI)_(2)Li(THF)_(2) 1 and the dimeric[{(Me_(3)Si)_(2)NC(N^(i)Pr)_(2)}_(2)Dy(μ-CI)]_(2) 2,have been confirmed to be single-molecule ***,the alteration from 1 to 2 leads to an obvious mitigated quantum tunnelling of magnetization at zero field of the hysteresis loop and much enhanced magnetic relaxation barrier(up to 312 K).5%dilution with the yttrium(Ⅲ)analogue for 2 shows no clear change for the hysteresis,indicating the single-ion nature of the magnetic behavior.

关键词： Guanidinate ligand Magnetic properties Lanthanides Single-molecule magnets Ab initio calculations

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HFD-exacerbated Metabolic Side Effects of Olanzapine Are Suppressed by ER Stress Inhibitor

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Current Medical Science 2023年第6期43卷 1116-1132页

作者： yu-feng ZUO Bao-hua ZHANG Ming-rui GUO Ben-ben LI Bao-cui WANG Deng DUAN yu-xin WANG Jing xi Meng HE Tao-lei SUN School of chemistry Chemical Engineering and Life SciencesWuhan University of TechnologyWuhan430070China The National Clinical Research Center for Mental Disorders&Beijing key laboratory of Mental Disorders Beijing Anding Hospital&the Advanced Innovation Center for Human Brain ProtectionCapital Medical UniversityBeijing100069China Hubei key laboratory of Nanomedicine for Neurodegenerative Diseases School of ChemistryChemical Engineering and Life ScienceWuhan University of TechnologyWuhan430070China

Objective Numerous schizophrenic patients are suffering from obesity primarily attributed to antipsychotic medication and poor dietary *** study investigated the progressive deterioration of olanzapine-induced metabolic disorders in the presence of a high-fat diet(HFD)and explored the involvement of endoplasmic reticulum(ER)*** Female Sprague-Dawley rats fed on a standard chow diet or HFD were treated with olanzapine(3 mg/kg/day)and the ER stress inhibitor 4-phenylbutyric acid(4-PBA,1 and 0.5 g/kg/day)for 8 *** in body weight,food intake,and plasma lipids were *** fat accumulation was evaluated using oil red O *** blotting and immunofluorescence assays were employed to examine the expression of ER stress markers,NOD-like receptor pyrin domain-containing protein 3(NLRP3),and proopiomelanocortin(POMC)in the hypothalamus or *** Compared to olanzapine alone,olanzapine+HFD induced greater weight gain,increased hyperlipidemia,and enhanced hepatic fat accumulation(P<0.05).Co-treatment with 4-PBA exhibited a dose-dependent inhibition of these effects(P<0.05).Further mechanistic investigations revealed that olanzapine alone activated ER stress,upregulated NLRP3 expression in the hypothalamus and liver,and downregulated hypothalamic POMC *** HFD exacerbated these effects by 50%–100%.Moreover,co-administration of 4-PBA dose-dependently attenuated the olanzapine+HFD-induced alterations in ER stress,NLRP3,and POMC expression in the hypothalamus and liver(P<0.05).Conclusion HFD worsened olanzapine-induced weight gain and lipid metabolic disorders,possibly through ER stress-POMC and ER stress-NLRP3 *** stress inhibitors could be effective in preventing olanzapine+HFD-induced metabolic disorders.

关键词： olanzapine high-fat diet obesity lipid metabolism endoplasmic reticulum stress proopiomelanocortin NOD-like receptor pyrin domain-containing protein 3

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基于白光中子源的^(197)Au中子辐射俘获截面测量及共振参数分析

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物理学报 2024年第7期73卷 104-113页

作者：罗淏天张奇玮栾广源王晓宇邹翀任杰阮锡超贺国珠鲍杰孙琪黄翰雄王朝辉吴鸿毅顾旻皓余滔解立坤陈永浩安琪白怀勇鲍煜曹平陈昊磊陈琪萍陈裕凯陈朕崔增琪樊瑞睿封常青高可庆韩长材韩子杰何泳成洪杨黄蔚玲黄锡汝季筱璐吉旭阳蒋伟江浩雨姜智杰敬罕涛康玲康明涛李波李超李嘉雯李论李强李晓李样刘荣刘树彬刘星言穆奇丽宁常军齐斌斌任智洲宋英鹏宋朝晖孙虹孙康孙晓阳孙志嘉谭志新唐洪庆唐靖宇唐新懿田斌斌王丽娇王鹏程王琦王涛峰文杰温中伟吴青彪吴晓光吴煊羊奕伟易晗于莉于永积张国辉张林浩张显鹏张玉亮张志永赵豫斌周路平周祖英朱丹阳朱科军朱鹏朱兴华中国原子能科学研究院核数据重点实验室北京102413 中国科学院高能物理研究所北京100049 散裂中子源科学中心东莞523803 核探测与核电子学国家重点实验室北京100049 中国科学技术大学近代物理系核探测与核电子学国家重点实验室合肥230026 北京大学物理学院核物理与核技术国家重点实验室北京100871 中国工程物理研究院核物理与化学研究所绵阳621900 西北核技术研究院西安710024 中国科学院大学北京100049 中国科学技术大学工程与应用物理系合肥230026 北京航空航天大学物理学院北京100083 华能山东石岛湾核电有限公司荣成264312

中子辐射俘获反应在反应堆运行、核装置设计及核天体物理研究中起重要的作用.4πBaF_(2)探测装置有着高时间分辨能力、低中子灵敏度、高探测效率等优点,适合开展中子辐射俘获反应截面数据的测量.中国原子能科学研究院核数据重点实验室... 详细信息

中子辐射俘获反应在反应堆运行、核装置设计及核天体物理研究中起重要的作用.4πBaF_(2)探测装置有着高时间分辨能力、低中子灵敏度、高探测效率等优点,适合开展中子辐射俘获反应截面数据的测量.中国原子能科学研究院核数据重点实验室建立了伽马全吸收装置(Gamma total absorption facility,GTAF),该装置用28块六棱BaF_(2)晶体和12块五棱BaF_(2)晶体构成了外径25 cm,内径10 cm的球壳,覆盖了95.2%的立体角.利用GTAF在中国散裂中子源Back-n束线上,测量了197Au(n,γ)的反应截面数据.测量数据通过能量筛选、PSD方法、晶体多重性筛选进行了初步本底扣除,随后结合对^(nat)C及空样品的测量数据对本底进行了分析及扣除,获得了197Au俘获反应的产额,利用SAMMY程序拟合得到了^(197)Au在1—100 e V的共振能量、中子共振宽度和伽马共振宽度参数.实验测量结果与ENDF/B-VIII.0数据库符合良好,其共振参数存在一定差异,分析原因可能与GTAF能量分辨率、Back-n的中子能谱测量精度、以及实验本底扣除方法相关,这也是下一步工作的重点.

关键词：中子辐射俘获截面共振参数白光中子源伽马全吸收装置

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Formation and Compression Behavior of Two-Phase Bulk Metallic Glasses with a Minor Addition of Aluminum

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Chinese Physics Letters 2011年第3期28卷 148-151页

作者： ZONG Hai-Tao MA Ming-zhen ZHANG xin-yu QI Li LI Gong JING Qin LIU Ri-Ping state key laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004 College of Physics and chemistry Henan Polytechnic UniversityJiaozuo 454000

A remarkable enhancement in room-temperature compressive deformability is realized by the minor-addition of 1.5 at.%Al in ZrTi-based bulk metallic *** amorphous phases are observed by transmission electron microscopy in the Al-containing alloys and this explains the improvement of compression *** studies suggest that phase separation might occur in glass forming alloys with a negative enthalpy of mixing.

关键词： alloys enthalpy amorphous

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喷墨打印CA/CL-20点火起爆序列及其性能研究

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火工品 2024年第4期 86-91页

作者：杨宏伟熊庭隆陶培培易镇鑫朱顺官张琳南京理工大学化学与化工学院江苏南京210094 瞬态化学效应与控制全国重点实验室陕西西安710061 南京理工科技化工有限责任公司江苏南京210094

为了实现CA/CL-20点火起爆序列的微型化制备,基于喷墨打印技术,以叠氮化钠墨水、铜盐墨水、CL-20墨水为前驱体,采用分层打印的方式在SCB上原位制备了叠氮化铜(CA)和CL-20炸药,制成SCB+CA+CL-20微型化点火起爆序列,并通过发火性能试验及... 详细信息

为了实现CA/CL-20点火起爆序列的微型化制备,基于喷墨打印技术,以叠氮化钠墨水、铜盐墨水、CL-20墨水为前驱体,采用分层打印的方式在SCB上原位制备了叠氮化铜(CA)和CL-20炸药,制成SCB+CA+CL-20微型化点火起爆序列,并通过发火性能试验及RDX雷管-铅板起爆试验对其性能进行了研究。结果表明:原位制备的CA在作用过程中发生了爆燃转爆轰,且能够点燃CL-20;SCB+CA+CL-20样品的点火持续时间超过6ms,而SCB裸桥和SCB+CA样品均小于2ms,表明打印的CL-20未发生爆轰,而是以燃烧为主;SCB+CA+CL-20点火起爆序列能够可靠起爆RDX雷管,并将铅板炸穿。

关键词：喷墨打印叠氮化铜(CA) CL-20 点火起爆

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Application of metabolomics in urolithiasis:the discovery and usage of succinate

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Signal Transduction and Targeted Therapy 2023年第2期8卷 771-783页

作者： xiu-zhen Zhang xiong-xin Lei Yan-lin Jiang Long-mei Zhao Chen-yu Zou yun-jin Bai Ya-xing Li Rui Wang Qian-jin Li Qiu-zhu Chen Ming-hui Fan yu-ting Song wen-qian Zhang Yi Zhang Jesse Li-Ling Hui-qi xie laboratory of Stem Cell and Tissue Engineering Orthopedic Research InstituteDepartment of OrthopedicsState Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengduSichuan 610041China Department of Urology Institute of UrologyWest China HospitalSichuan UniversityChengduSichuan 610041China Research Core Facility of West China Hospital Sichuan UniversityChengduSichuan 610041China Department of Medical Genetics West China Second University HospitalChengduSichuan 610041China

Urinary stone is conceptualized as a chronic metabolic disorder punctuated by symptomatic stone *** has been shown that the occurrence of calcium oxalate monohydrate(COM)during stone formation is regulated by crystal growth *** crystallization inhibitors have been recognized as a therapeutic modality for decades,limited progress has been made in the discovery of effective modifiers to intervene with stone *** this study,we have used metabolomics technologies,a powerful approach to identify biomarkers by screening the urine components of the dynamic progression in a bladder stone *** in-depth mining and analysis of metabolomics data,we have screened five differential *** density functional theory studies and bulk crystallization,we found that three of them(salicyluric,gentisic acid and succinate)could effectively inhibit nucleation in *** thereby assessed the impact of the inhibitors with an EG-induced rat model for kidney ***,succinate,a key player in the tricarboxylic acid cycle,could decrease kidney calcium deposition and injury in the *** analysis further showed that the protective effect of succinate was mainly through anti-inflammation,inhibition of cell adhesion and osteogenic *** findings indicated that succinate may provide a new therapeutic option for urinary stones.

关键词： crystallization thereby protective

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Research on a MEMS pyrotechnic with a double-layer barrier safety and arming device

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Defence Technology（防务技术） 2022年第11期18卷 2034-2044页

作者： Ke-xin Wang Teng-jiang Hu yu-long Zhao Wei Ren state key laboratory for Manufacturing Systems Engineering Xi'an Jiaotong UniversityXi'an710049China Science and Technology on Applied Physical chemistry laboratory Shaanxi Applied Physical Chemistry Research InstituteXi'an710061China

As an essential component of ammunition, pyrotechnics can control ignition with high ***, due to limits of fabrication technology, traditional pyrotechnics are bulky. To achieve both functionality and miniaturization, MEMS pyrotechnics integrate initiator, safety-and-arming(S&A) device and lead charge and keep all components within a small size. MEMS S&A devices, as the core component to ensure system safety, are difficult to achieve active and rapid response to control signals with high safety and reliability. In order to overcome the difficulty, we propose the design and characterization of a MEMS pyrotechnic with a double-layer barrier S&A device. The MEMS pyrotechnic is a high-integrated device with an overall size of 13.4 × 8.5 × 5.2 mm^(3). The initiator is a Ni Cr bridge foil covered with an Al/Cu O energetic film, which can generate flame when ignited by an excitation *** match the flame energy, lead styphnate is chosen in this study as the lead charge. The S&A device contains four semi-circular barriers, which are directly driven by V-shape electro-thermal actuators to gain active control of the pyrotechnics’ ignition condition with rapid response. To improve the system’s reliability, the four barriers are axisymmetrically placed in two layers, two barriers for each layer, to constitute a double-layer structure with a thickness of 100 μm. The ignition test results show that the S&A device can prevent the initiator from detonating the lead charge in safety condition. In arming condition, the lead charge will be detonated.

关键词： MEMS Pyrotechnics Safety and arming device Initiator Electro-thermal actuator

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