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Unlocking the multi-electron transfer reaction in NASICON-type cathode materials

Materials Futures 2023年第2期2卷 109-122页

作者： Yuan Liu Xiaohui Rong Fei Xie Yaxiang Lu junmei zhao Liquan Chen Yong-Sheng Hu Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190People’s Republic of China College of Materials Science and Optoelectronic Technology University of Chinese Academy of SciencesBeijing 100049People’s Republic of China Yangtze River Delta Physics Research Center Co.Ltd Liyang 213300People’s Republic of China Huairou Division Institute of PhysicsChinese Academy of SciencesBeijing 101400People’s Republic of China CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijingPeople’s Republic of China

The growing concern about scarcity and large-scale applications of lithium resources has attracted efforts to realize cost-effective phosphate-based cathode materials for next-generation Na-ion batteries(NIBs).In previous work,a series of materials(such as Na_(4)Fe_(3)(PO_(4))_(2)(P_(2)O_(7)),Na_(3)VCr(PO_(4))_(3),Na_(4)VMn(PO_(4))3,Na_(3)MnTi(PO_(4))_(3),Na_(3)MnZr(PO_(4))3,etc)with∼120 mAh g^(-1) specific capacity and high operating potential has been proposed.However,the mass ratio of the total transition metal in the above compounds is only∼22 wt%,which means that one-electron transfer for each transition metal shows a limited capacity(the mass ratio of Fe is 35.4 wt%in LiFePO_(4)).Therefore,a multi-electron transfer reaction is necessary to catch up to or go beyond the electrochemical performance of LiFePO_(4).This review summarizes the reported NASICON-type and other phosphate-based cathode materials.On the basis of the aforementioned experimental results,we pinpoint the multi-electron behavior of transition metals and shed light on designing rules for developing high-capacity cathodes in NIBs.

关键词： NASICON Na-ion batteries cathode materials multi-electron transfer reactions

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血清Myo、cTnI、NT-proBNP、心肌酶谱水平联合检测在心肌梗死诊断中的价值

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中国民康医学 2024年第14期36卷 128-130页

作者：魏晓赵俊美郑州美康盛德医学检验所检验科河南郑州450000 郑州市惠济区人民医院检验科河南郑州450000

目的:分析血清肌红蛋白(Myo)、肌钙蛋白I(cTnI)、N-末端脑钠肽前体(NT-proBNP)、心肌酶谱[肌酸激酶同工酶(CK-MB)、乳酸脱氢酶(LDH)、肌酸激酶(CK)]水平联合检测在心肌梗死诊断中的价值。方法:选取2021年5月至2023年5月郑州市惠济区人... 详细信息

目的:分析血清肌红蛋白(Myo)、肌钙蛋白I(cTnI)、N-末端脑钠肽前体(NT-proBNP)、心肌酶谱[肌酸激酶同工酶(CK-MB)、乳酸脱氢酶(LDH)、肌酸激酶(CK)]水平联合检测在心肌梗死诊断中的价值。方法:选取2021年5月至2023年5月郑州市惠济区人民医院收治的78例心肌梗死患者进行横断面研究,设为观察组;选取同期该院收治的78例冠心病非心肌梗死患者进行横断面研究,设为对照组。比较两组血清Myo、cTnI、NT-proBNP、CK-MB、LDH、CK水平;采用受试者工作特征(ROC)曲线分析血清Myo、cTnI、NT-proBNP、CK-MB、LDH、CK水平单项及联合检测诊断心肌梗死的价值。结果:观察组血清Myo、cTnI、NT-proBNP、CK-MB、LDH、CK水平均高于对照组,差异有统计学意义(P<0.05);ROC曲线分析结果显示,血清Myo、cTnI、NT-proBNP、CK-MB、LDH、CK水平单项及联合检测诊断心肌梗死的曲线下面积(AUC)分别为0.700、0.750、0.780、0.846、0.600、0.869、0.923,均有一定的诊断价值,其中联合检测的诊断价值高于六者单项检测诊断。结论:血清Myo、cTnI、NT-proBNP、CK-MB、LDH、CK水平联合检测诊断心肌梗死的价值高于六者单项检测诊断。

关键词：肌红蛋白肌钙蛋白I N-末端脑钠肽前体心肌酶谱诊断心肌梗死

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Advances in reactive co-precipitation technology for preparing high-performance cathodes

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Green Carbon 2023年第2期1卷 193-209页

作者： Zhenzhen Wang Li Yang Chunliu Xu Jingcai Cheng junmei zhao Qingshan Huang Chao Yang Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess Technology(QIBEBT)Chinese Academy of Sciences(CAS)QingdaoShandong 266101China CAS Key Laboratory of Green Process and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Shandong Energy Institute Qingdao 266101ShandongChina Qingdao New Energy Shandong Laboratory Qingdao 266101ShandongChina

Reactive crystallization plays an essential role in the synthesis of high-quality precursors with a narrow particle size distribution,dense packing,and high sphericity.These features are beneficial in the fabrication of high-specific-capacity and long-cycle-life cathodes for lithium-ion and sodium-ion batteries.However,in industrial production,designing and scaling-up crystallizers involves the use of semi-empirical approaches,making it challenging to satisfactorily meet techno-economic requirements.Furthermore,there is still a lack of in-depth knowledge on the theoretical models and technical calculations of the current co-precipitation process.This review elaborates on critical advances in the theoretical guidelines and process regulation strategies using a reactive crystallizer for the preparation of precursors by co-precipitation.The research progress on the kinetic models of co-precipitation reactive crystallization is presented.In addition,the regulation strategies for the reactive crystallization process of lithium-ion ternary cathodes are described in detail.These include the influence of different reactive crystallizer structures on the precursor's morphology and performance,the intelligent online measurement of efficient reactive crystallizers to ensure favorable conditions of co-precipitation,and preparing the precursor with a high tap density by increasing its solid holdup.A controllable reactive crystallization process is described in terms of the structural design with concentration gradient materials and bulk gradient doping of advantageous elements(such as magnesium ion)in lithium-ion cathodes and the fabrication of sodium-ion cathodes with three typical materials-Prussian blue analogues,transition metal oxides,and polyanionic phosphate compounds being involved.

关键词： Reactive crystallization Kinetic models Crystallizer Regulation strategy Cathode materials

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Large Scale One-Pot Synthesis of Monodispersed Na_(3)(VOPO_(4))_(2)F Cathode for Na-Ion Batteries

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Energy Material Advances 2022年第1期2022卷 309-319页

作者： Qiangqiang Zhang Xing Shen Quan Zhou Kaixuan Li Feixiang Ding Yaxiang Lu junmei zhao Liquan Chen Yong-Sheng Hu Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China

Na-ion batteries(NIBs)have received significant interest as potential candidates for large-scale energy storage owing to the widespread distribution of sodium and superior low-temperature performance.However,their commercial application is usually hindered by the high production cost and inadequate performance for electrode materials,particularly for cathodes.Na_(3)(VOPO_(4))_(2)F(NVOPF)has been recognized as one of the most promising cathodes for high-energy NIBs owing to the high working voltage and energy density.Here,we report a facile highly efficient room-temperature solution protocol for large-scale synthesis of NVOPF cathode for NIBs.By simply regulating pH,NVOPF can be obtained,which delivered a discharge capacity of 120.2 mAh g^(-1) at 0.1 C and 72%capacity retention over 8000 cycles at 25 C.Besides,the kilogram-level NVOPF products have been synthesized,and 26650 cylindrical cells were fabricated,which exhibit excellent cycling stabilities,remarkable lowtemperature performance with comparable safety features.We hope our findings could provide insights on the industrial application of NVOPF in NIBs.

关键词： cycling cylindrical Cathode

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Superior growth performance in broiler chicks fed chelated compared to inorganic zinc in presence of elevated dietary copper

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Journal of Animal Science and Biotechnology 2016年第4期7卷 561-569页

作者： junmei zhao Robert B. Shirley Julia J. Dibner Karen J. Wedekind Frances Yan Paula Fisher Thomas R. Hampton Joseph L. Evans Mercedes Vazquez-Anon research and development novus international20 Research Park DriveSaint CharlesMO 63304USA current affiliation:poultry technical services adisseo usaAlpharettaGA 30022USA

Background： The goal of this study was to compare the antagonism of elevated dietary Cu （250 mg/kg） from CuS04 on three different Zn sources （ZnS04. H20; [Zn bis（-2-hydroxy-4-（methylthio）butanoic acid）], Zn（HMTBa）2 a chelated Zn methionine hydroxy analogue; and Zn-Methionine）, as measured using multiple indices of animal performance in ROSS 308 broilers. Methods： Three experiments were conducted in broiler chicks fed a semi-purified diet. All birds were fed a Zn-deficient diet （8.5 mg/kg diet） for 1 wk, and then provided with the experimental diets for 2 wks. Results： Experiment 1 was a 2 x 2 factorial design with two levels of Cu （8 vs. 250 mg/kg diet from CuSO4） and two Zn sources at 30 mg/kg [ZnSO4. H20 vs. Zn（HMTBa）2]. Elevated Cu impaired growth performance only in birds fed ZnSO4. Compared to ZnSO4. H20, Zn（HMTBa）2 improved feed intake （12 %; P 〈 0.001） and weight gain （12 %, P 〈 0.001） and the benefits were more pronounced in the presence of 250 mg/kg diet Cu. Experiment 2 was a dose titration of ZnSO4- H20 and Zn（HMTBa）2 at 30, 4,5, 60, and 75 mg/kg diet in the presence of 250 mg/kg CuSO4. Feed：gain was decreased and tibia Zn was increased with increasing Zn levels from 30 to 75 mg/kg. Birds fed Zn（HMTBa）2 consumed more food and gained more weight compared to birds fed ZnSO4, especially at lower supplementation levels （30 and 45 mg/kg; interaction P 〈 0,05）. Experiment 3 compared two organic Zn sources （Zn（HMTBa）2 vs. Zn-Methionine） at 30 mg/kg with or without 250 mg/kg CuSO4. No interactions were observed between Zn sources and Cu levels on performance or tissue mineral concentrations. High dietary Cu decreased weight gain （P 〈 0.01）. Tibia Cu and liver Cu were significantly increased with 250 mg/kg dietary Cu supplementation （P 〈 0.01）. No difference was observed between the two Zn sources. Conclusions： Dietary 250 mg/kg Cu significantly impaired feed intake and weight gain in birds fed ZnSO4. H20, but had less impact in birds fed Zn（HMTBa）2. No difference was observed between the two organic zinc sourc

关键词： Antagonism Broilers Chelates Growth MineraLs Organic Performance

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拉萨市藏族中学生血压偏高与超重肥胖及其共病影响因素分析

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中国学校卫生 2024年第3期45卷 423-426,430页

作者：廉启国次仁央宗王延会赵俊美卢玉鑫李娜赵文虎邓莉萍刘志浩西藏自治区拉萨市疾病预防控制中心(西藏拉萨市卫生监督所)公共卫生科 850005 上海市生物医药技术研究院上海疾病与健康基因组学重点实验室江苏省疾病预防控制中心健康教育所

目的调查拉萨市藏族中学生血压偏高、超重肥胖及其共病的流行现状,并分析其生活方式及其影响因素,为制定高海拔地区儿童青少年血压偏高、超重肥胖干预措施提供依据。方法于2021年9月采用分层整群随机抽样方法,选取拉萨市藏族1488名初、... 详细信息

目的调查拉萨市藏族中学生血压偏高、超重肥胖及其共病的流行现状,并分析其生活方式及其影响因素,为制定高海拔地区儿童青少年血压偏高、超重肥胖干预措施提供依据。方法于2021年9月采用分层整群随机抽样方法,选取拉萨市藏族1488名初、高中学生进行血压测量、体格检查并对人口学特征和生活方式进行问卷调查。采用多因素Logistic回归分析中学生血压偏高、超重肥胖及其共病的影响因素。结果拉萨市藏族中学生血压偏高检出率为17.8%,超重肥胖检出率为17.4%,血压偏高与超重肥胖共病检出率为5.0%。多因素Logistic回归分析结果显示,年龄(OR=0.81)、居住地、体质量指数(BMI)、性别是藏族中学生血压偏高的影响因素,女生血压偏高发生风险高于男生(OR=1.89),郊县学生风险高于城区学生(OR=8.06),BMI超重组和肥胖组风险高于正常组(OR值分别为2.55,2.87)(P值均<0.05);调整性别、居住地、学校等混杂因素后,血压偏高额外调整了BMI,每日视屏时间≥2 h与血压偏高、超重肥胖及其共病的发生均呈正相关(OR值分别为1.56,1.59,2.51)(P值均<0.05)。结论拉萨市藏族中学生血压偏高、超重肥胖检出率较高,每日视屏时间较长是藏族中学生血压偏高、超重肥胖和共病的共同影响因素。应采取相应措施对藏族学生进行生活方式干预,以减少藏族中学生血压偏高和超重肥胖的发生。

关键词：血压超重肥胖症共病现象回归分析学生少数民族

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Research of Tornambe control of Induction Motor System

Research of Tornambe control of Induction Motor System

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第32届中国过程控制会议(CPCC2021)

作者： junmei zhao Yifeng Ren School of electrical and control engineering North China University

Induction motor(IM) is a complex controlled object that is difficult to drive and control.In this paper,direct torque control strategy(DTC) is adopted to drive IM.In order to overcome drawbacks of the bad low speed performance of DTC system,Tornambe control(TC) is used to replace the traditional speed regulator to improve system performance.The results show that TC strategy overcomes the disadvantage of the low speed performance declined and improves the response speed of DTC system,and effectively solves the contradiction between the system response speed and overshoot.

关键词： direct torque control Tornambe control speed regulator induction motor

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Intelligent Monitoring System of Photovoltaic Power Generation Based on Internet of Things and Cloud Service

Intelligent Monitoring System of Photovoltaic Power Generati...

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第32届中国过程控制会议(CPCC2021)

作者： Yifeng Ren Yongjun Yu junmei zhao School of Electrical and Control Engineering North University of China

To improve photovoltaic power stations’ precise operation and maintenance,reduce costs and increase efficiency,a photovoltaic power generation intelligent monitoring system based on the IoT and cloud services was proposed.The system consists of local control software,remote terminal access system and cloud middleware.The local control software adopted DSP to develop the embedded control system.It can realize local control and data acquisition of photovoltaic power station,whose data can be transmitted to the cloud server through GPRS wireless communication.Then it established a data centre on the cloud server and deployed middleware to realize the transmission and control of remote data of photovoltaic power generation.Finally,a remote terminal access system based on the B/S architecture was developed to realize the web remote monitoring and intelligent scheduling of photovoltaic power generation data.The test results show that the system can monitor the real-time status of photovoltaic equipment in an all-around way,which has certain engineering significance for the operation and maintenance of photovoltaic power plants.

关键词： IoT cloud service PV remote monitoring

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南海白云凹陷渐新统珠海组沉积相及其演化

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断块油气田 2022年第6期29卷 800-806,836页

作者：田兵郑有伟赵俊梅内蒙古科技大学内蒙古包头014010

渐新统珠海组为南海北部深水区重要的油气勘探目的层段。综合应用岩心、测井、地震等资料,详细分析了白云凹陷珠海组的层序特征、沉积相类型及分布特征,明确了其沉积演化过程。研究结果表明:白云凹陷珠海组自下而上可划分为SQ1-1,SQ1-2,... 详细信息

渐新统珠海组为南海北部深水区重要的油气勘探目的层段。综合应用岩心、测井、地震等资料,详细分析了白云凹陷珠海组的层序特征、沉积相类型及分布特征,明确了其沉积演化过程。研究结果表明:白云凹陷珠海组自下而上可划分为SQ1-1,SQ1-2,SQ1-3等3个三级层序,主要发育陆架三角洲、陆架边缘三角洲、深水扇、扇三角洲与海相沉积。珠海组SQ1-1沉积时期,近源陆架三角洲在白云凹陷北缘广泛分布,海相主要分布在凹陷南侧,扇三角洲发育在凹陷西南控洼断层之下;SQ1-2,SQ1-3沉积时期,在古珠江充足物源、区域构造沉降及海平面变化控制下,凹陷内形成北西—南东向大型陆架三角洲-陆架边缘三角洲-深水扇沉积体系组合,西南侧扇三角洲体系持续发育,规模逐渐缩小。

关键词：沉积相沉积演化珠海组渐新统白云凹陷

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青光眼-白内障联合术后患者屈光误差及其与术前眼球生物学参数的相关性

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眼科新进展 2022年第6期42卷 480-484页

作者：雷蕊莲赵军梅山西医科大学第一临床医学院山西省太原市030001 山西省眼科医院青光眼科山西省太原市030001

目的对比分析原发性急性闭角型青光眼(PAACG)、原发性慢性闭角型青光眼(PCACG)、原发性开角型青光眼(POAG)患者行青光眼-白内障联合手术(青白联合手术)后3个月的屈光状态,评估术前眼球生物学参数对患者术后屈光状态的影响。方法回顾性... 详细信息

目的对比分析原发性急性闭角型青光眼(PAACG)、原发性慢性闭角型青光眼(PCACG)、原发性开角型青光眼(POAG)患者行青光眼-白内障联合手术(青白联合手术)后3个月的屈光状态,评估术前眼球生物学参数对患者术后屈光状态的影响。方法回顾性临床研究。选择2020年2月至2021年2月于山西省眼科医院行青白联合手术的青光眼合并白内障患者90例(108眼),其中PAACG组30例(33眼),PCACG组30例(38眼),POAG组30例(37眼)。所有患者术前均采用IOLMaster 700测量眼轴长度、中央角膜厚度、角膜曲率、前房深度、晶状体厚度、白到白距离(WTW),使用仪器自带的SRK-T公式计算人工晶状体度数及预留屈光度。术后3个月对患者进行综合验光,计算术后屈光误差。比较三组患者术后3个月的屈光误差分布,及术前眼球生物学参数与屈光误差的相关性。结果三组患者间术前中央角膜厚度、角膜曲率、WTW差异均无统计学意义(均为P>0.05)。POAG组较PAACG组和PCACG组患者术前眼轴更长、前房更深、晶状体更薄,差异均有统计学意义(均为P0.05)。术后3个月,PAACG组、PCACG组、POAG组患者绝对屈光误差分别为(0.53±0.75)D、(0.51±0.70)D、(0.05±0.47)D。远视误差组患者术前眼轴长度短于近视误差组,术前前房深度浅于近视误差组,术前晶状体厚度厚于近视误差组,两组间相比差异均有统计学意义(均为P0.05)。术后屈光误差与术前眼轴长度、前房深度均呈负相关(r=-0.62、-0.48,均为P=0.00),与术前晶状体厚度呈正相关(r=0.54,P=0.00),与术前中央角膜厚度、角膜曲率、WTW均无显著相关性(均为P>0.05)。结论使用SRK-T公式计算人工晶状体度数时,PAACG、PCACG患者比POAG患者呈现较大的屈光误差,且多为远视误差。术前短眼轴、浅前房及厚晶状体患者青白联合手术后更趋于远视误差。

关键词：青光眼白内障联合手术屈光误差生物学参数

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