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Thermodynamics-directed bulk/grain-boundary engineering for superior electrochemical durability of Ni-rich cathode

Journal of Energy Chemistry 2024年第10期97卷 321-331,I0006页

作者： Kangyu Zou Mingzhu jiang Tianxiang Ning lei tan Junchao Zheng Jiexi Wang Xiaobo Ji Lingjun Li School of Materials Science and Engineering Changsha University of Science and TechnologyChangsha 410114HunanChina Cllege of Chemistry and Chemical Engineering Central South UniversityChangsha 410083HunanChina School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina National Engineering Research Centre of Advanced Energy Storage Materials Changsha 410205HunanChina

Introducing high-valence ta element is an essential strategy for addressing the structu ral deterioration of the Ni-rich LiNi_(1-x-y)Co_(x)Mn_(y)O_(2)(NCM)cathode,but the enlarged Li/Ni cation mixing leads to the inferior rate capability originating from the hindered Li~+*** that the non-magnetic Ti~(4+)ion can suppress Li/Ni disorder by removing the magnetic frustration in the transition metal ***,it is still challenging to directionally design expected ta/Ti dual-modification,resulting from the complexity of the elemental distribution and the uncertainty of in-situ formed coating compounds by introducing foreign ***,a LitaO_3 grain boundary(gB)coating and bulk Ti-doping have been successfully achieved in LiNi_(0.834)Co_(0.11)Mn_(0.056)O_(2) cathode by thermodynamic guidance,in which the structural formation energy and interfacial binding energy are employed to predict the elemental diffusion discrepancy and thermodynamically stable coating *** to the coupling effect of strengthened structural/interfacial stability and improved Li~+diffusion kinetics by simultaneous bulk/gB engineering,the ta/Ti-NCM cathode exhibits outstanding capacity retention,reaching 91.1%after 400 cycles at 1 *** elaborate work contributes valuable insights into rational dual-modification engineering from a thermodynamic perspective for maximizing the electrochemical performances of NCM cathodes.

关键词： Ni-rich layered cathode Dual-modification grain boundary coating Bulk doping Thermodynamic perspective

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Characteristics of Hypertension Death in Low-income Regions of Inner Mongolia, China

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Biomedical and Environmental Sciences 2020年第1期33卷 53-57页

作者： YU Di DU Mao Lin SUN De Jun QIAO Su Fang MA Yu Jia Wang Li gAO Yu Min CHEN Yong Sheng MENg Yong Liang SUN Xiao Ling gUO Wen Fang WANg Qing Xia ZHANg Hai Rong LI Wu Yun ta Na JIA lei HAO Jing ZHAO Neng Jun SUN Juan Inner Mongolia Medical University Hohhot 010110Inner Mongolia Autonomous RegionChina Inner Mongolia People’s Hospital Hohhot 010017Inner Mongolia Autonomous RegionChina Xincheng District Hospital Hohhot 010010Inner Mongolia Autonomous RegionChina Inner Mongolia Normal University Hohhot 010022Inner Mongolia Autonomous RegionChina Inner Mongolia Autonomous Region Hospital of Traditional Chinese Medicine Hohhot 010020Inner Mongolia Autonomous RegionChina Affiliated People’s Hospital Inner Mongolia Medical UniversityHohhot 010050Inner Mongolia Autonomous RegionChina

Hypertension has been a major risk factor for cardiovascular disease[1].Hypertension overall prevalence in adults is 30%–45%,becoming>60%in people aged above 60 years[2],with a worldwide agestandardised prevalence of... 详细信息

关键词： Characteristics Hypertension Death Low-income Regions Inner Mongolia China

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geochemistry and Zircon U-Pb Dating of Changshagou Adakite from the South Altyn UHPM Terrane: Evidence of the Partial Melting of the Lower Crust

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Acta.geologica Sinica(English Edition) 2014年第5期88卷 1454-1465页

作者： KANg lei LIU Liang WANg Chao CAO Yuting YANg Wenqiang WANg Yawei LIAO Xiaoying State Key Laboratory of Continental Dynamics Department of Geology Northwest University Xi'an Center of geological Survey China Geological Survey College of geological Science and Engineering Shandong University of Science and Technology

Changshagou adakite, an outcrop in the middle segment of the South Altyn tagh ultra-high pressure metamorphism （UHPM） terrane, contains medium-K cal-alkaline and weakly peraluminous compositions （SiO2 = 66.79% to 68.65%, Al2O3 = 17.48% to 18.31%, K20 ＋ Na20 = 6.32% to 6.88%, K2O/Na2O = 0.25 to 0.33, A/CNK = 1.01 to 1.06）. This outcrop is also enriched with large ion lithophile elements but with depleted high-field strength elements （HFSE） showing clearly negative Nb, ta, and Ti anomalies. REE distribution patterns show a positive anomaly of Eu （6Eu = 1.15 to 1.31） and weakly enriched with LREE compared with HREE （LREE/HREE = 1.02 to 4.20）. Experimental results and several characteristics, including relatively low Nb/ta ratios （6.03 to 8.45） and high Sr, Sr/Y, （La/Yb）N and low Y and Yb, which indicate the presence of residual garnet and the absence of plagioclase in the source region, show that adakite may form at a pressure ranging from 1.2 gPa to 1.5 gPa and at a temperature of approximately 900~C. Low Cr, Ni, and Mg# values, trace element patterns, and SiO2- Mg# and SiO2-MgO diagrams indicate that rocks are formed by the partial melting of a thickened lower continental crust. LA-ICP-MS in situ U-Pb dating yields two group ages： 503.1±1.7 Ma （core） and 453.1±3.0 Ma （rim）. The Th/U ratios of the core and the rim are 0.11 to 0.40 and 0.03 to 0.07, respectively. Considering the zircon CL image characteristics, Th/U ratios, and previous studies on regional UHPM rocks, adakite formed at 503.1 ± 1.7 Ma and underwent a tectothermal event as a result of the break-off of the Altyn deep subducted continental crust at 453.1 ± 3.0 Ma.

关键词： South Altyn adakite geochemistry zircon U-Pb age

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STUDY ON BIOLEACHINg OF PRIMARY CHALCOPYRITE ORE WITH THERMOACIDOPHLIC ARCHAE

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Acta Metallurgica Sinica(English Letters) 2006年第5期19卷 341-346页

作者： P. Zou W.B. Zhang T. lei J.K. Wang Kunming University of Science and Technology Kunming 650093 China Technology Center Yunnan Metallurgy Group Co. Ltd. Kunming 650031China

A high temperature-tolerating thermoacidophilic archae （ta） was isolated from water samples collected from a hot sulfur-containing spring in the Yunnan Province, China, and was used in bioleaching experiments of a low-grade chalcopyrite ore. The ta.grow at temperatures ranging from 40 to 80℃, with 65℃ being the optimum temperature, and at pH values of l.5 to 4.0, with an optimum pH value of 2.0. The bioleaching experiments of the chalcvpyrite ore were conducted in both laboratory batch bioreactors and leaching columns. The results obtained from the bioreactor experiments showed that the ta bioleaching rate of copper reached 97% for a 12-day leaching period, while the bioleaching rate was 32.43% for thiobacillus ferrooxidans （Tf） leaching for the same leaching time. In the case of column leaching, tests of a two-phase leaching （196 days）, that is, a two-month （56 days） Tf leaching in the first phase, followed by a 140-day ta leaching in the second phase were performed. The average leaching rate of copper achieved for the 140-day ta leaching was 195mg/（L.d）, while for the control experiments, it was as low as 78mg/（L .d） for the Tf leaching, indicating that the ta possesses a more powerful oxidizing ability to the chalcopyrite than Tf Therefore, it is suggested that the two-phase leaching process be applied to .for the heap leaching operations, whereas, the ta can be used in the second phase when the temperature inside the heap has increased, and the primary copper sulfide minerals have already been partially oxidized with Tf beforehand in the first phase.

关键词： chalcopyrite biological oxidation thermoacidophilic archae mesophile batch stirred bioleaching column bioleaching

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A strategy for enhancing luminescence thermometry via ta^(5+)-triggered K_(0.5)Na_(0.5)NbO_(3):Er^(3+)transparent ceramics

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Journal of Materiomics 2024年第5期10卷 984-994页

作者： Quan Zhang Zetian Yang Mingyuan Wang Yang Liu Shuangying lei Laihui Luo Dirk Poelman Key Laboratory of MEMS of Ministry of Education School of Electrical Science and EngineeringSoutheast UniversityNanjing210096China LumiLab Department of Solid StateSciencesGhent UniversityKrijgslaan 281-S1GhentB-9000Belgium School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing210094China Department of Microelectronic Science and Engineering Ningbo UniversityNingbo315211China

Luminescence thermometry is a reliable approach for remote thermal sensing,and extensive studies have been devoted to designing a luminescence thermometer with heightened thermal ***,we report a promising luminescence thermometric material,ta^(5+)-substituted K_(0.5)Na_(0.5)NbO_(3):0.003Er^(3+)transparent ferroelectric *** temperature sensing sensitivity is significantly improved by adjusting the concentration of ta^(5+)in the ***,utilizing the fluorescence intensity ratio from the 2H_(11/2) and 4S_(3/2) thermally coupled states of Er^(3+)as a detecting signal within the temperature range of 273–543 K,an optimal maximum absolute sensitivity of 0.0058 K–1 and relative sensitivity of 0.0158 K–1 are achieved for K_(0.5)Na_(0.5)NbO_(3):0.65ta^(5+)/0.003Er^(3+).Simultaneously,as the concentration of ta5+increase,a unique evolution of structural phase transitions is observed from orthorhombic to tetragonal and then to *** is accompanied by an improvement in luminescence temperature sensing properties,and the best sensitivity is demonstrated in the cubic-phase ***,a huge change in infrared luminescence properties as a function of temperature is found around the structure transition temperature of the *** results indicate a promising potential for achieving highly sensitive thermometry or monitoring phase structure transitions through luminescence thermometry behavior in the K_(0.5)Na_(0.5)NbO_(3) host.

关键词： Transparent ceramics Temperature sensing Phase transition Upconversion emission

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Superhydrophilic membrane with photo-Fenton self-cleaning property for effective microalgae anti-fouling

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Chinese Chemical Letters 2023年第8期34卷 444-448页

作者： Yunhua Wang Zhengqi Jiao Wenlong Li Sen Zeng Jiliang Deng Miao Wang lei Ren Department of Biomaterials College of MaterialsKey Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of XiamenXiamen UniversityXiamen 361005China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

Membrane filtration is one of the effective approaches to harvest microalgae for industrial biofuel ***,during the filtration process,microalgae cells and extracellular organic matter(EOM)will deposit on the membrane surface leading to reversible membrane fouling that can be removed by physical *** hydrophobic EOM is adsorbed on the membrane surface or inside pores,it will build up a gel layer,causing irreversible membrane *** fouling can only be removed using chemical methods that will decrease membrane lifespan and increase operational ***,we introduce a versatile superhydrophilic membrane with photo-Fenton self-cleaning property,which can prevent the reversible fouling and remove the irreversible *** acid(ta)and 3-aminopropyltriethoxysilane(APTES)were co-deposited on the polyvinylidene fluoride(PVDF)membrane via Schiff base and Michael addition reactions,andβ-FeOOH nanorods were inlaid on the membrane surface by in situ *** water contact angle of the modified membrane is reduced from 120°to 0°Under 60 min visible light,the hydroxyl radical(·OH)generated by the photo-Fenton reaction degraded the irreversible fouling that blocked membrane *** irreversible fouling rates of modified membrane was reduced from 39.57%to 3.26%,compared with the original *** harvesting results illustrated that the membrane has a high flux recovery rate(FRR)of 98.2%,showed excellent passive antifouling and active antifouling *** believe this work will spark a novel platform for optimizing energy-efficient microalgae harvesting separation membrane *** addition,this method of anti-fouling filtration for microorganisms can be extended to the industrial production of various bioenergy sources and will have very promising practical applications.

关键词： Membrane filtration Microalgae harvesting Irreversible membrane fouling Photo-Fenton Superhydrophilic

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实物类转移支付的道德风险:以中国城职保个人账户为例

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世界经济 2023年第5期46卷 201-230页

作者：沓钰淇黄炜雷晓燕北京大学中国经济研究中心北京大学国家发展研究院

实物类转移支付限定用途的特点使接受者倾向于低估其价值,造成消费扭曲和效率损失。政府使用实物类转移支付进行收入再分配时需重点考虑这种道德风险产生的成本。本文以中国城镇职工基本医疗保险个人账户为例,基于中国西部某地级市2012-... 详细信息

实物类转移支付限定用途的特点使接受者倾向于低估其价值,造成消费扭曲和效率损失。政府使用实物类转移支付进行收入再分配时需重点考虑这种道德风险产生的成本。本文以中国城镇职工基本医疗保险个人账户为例,基于中国西部某地级市2012-2016年2000多万条医疗保险报销大数据,运用动态双重差分法分析医疗保险个人账户的道德风险问题。估计结果显示,参保者在耗尽个人账户余额后,普通门诊和药店购药的费用和次数显著下降。这说明参保者会低估个人账户内资金价值,在个人账户余额耗尽后主观感觉医疗保健价格上升而减少医疗保健消费。因此,针对医疗保险个人账户的道德风险问题,政府有必要采取有力的改革措施,减少资金浪费。

关键词：实物类转移支付职工医疗保险医保个人账户道德风险

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MXene derivative ta_(4)C_(3)-ta_(2)O_(5) heterostructure as bi-functional barrier for Li-S batteries

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Journal of Materials Science & Technology 2023年第20期151卷 89-98页

作者： Qi Liang Sizhe Wang Xiaohua Jia Jin Yang Yong Li Dan Shao lei Feng Jiaxuan Liao Haojie Song School of Materials Science and Engineering Shaanxi Key Laboratory of green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science&TechnologyXi’an 710021China Yangtze Delta Region Institute(Quzhou) University of Electronic Science and Technology of ChinaQuzhou 313001China

The shuttle effect of polysulfides during the charging and discharging of lithium-sulfur(Li-S)batteries and the growth of Li dendrites are crucial obstacles to hinder the commercialization of Li-S *** engineering is an effective strategy to accelerate catalytic conversion and suppress the dissolution of ***,we report a ta_(4)C_(3)-ta_(2)O_(5) heterostructure composite as a bi-functional modified separator that not only achieves effective protection for lithium metal but also accelerates the polysulfides redox kinetics *** heterostructure possesses efficient chemical anchoring and abundant active sites to immobilize polysulfides by synergistic effect,which endows a stable long cycling performance for Li-S *** corresponds to an initial high capacity of 801.9 mAh g^(–1) at 1 C with a decay rate of 0.086%for 500 *** to its high Young’s modulus(up to 384 gPa),ta_(4)C_(3) contributes to forming a protective layer on the Li metal surface to inhibit the growth of Li ***,the symmetrical cell has a stable overpotential for 700 cycles at 20 mA cm^(–2)/20 mAh cm^(–2).So,this“one stone two birds”design affords a novel perspective for high-energy Li-S battery storage system design and Li metal protection.

关键词： MXene ta_(4)C_(3) ta_(2)O_(5) Lithium-sulfur batteries Li metal protection

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Study on Agrobacterium-Mediated Transformation of Pepper with Barnase and Cre gene

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Agricultural Sciences in China 2009年第8期8卷 947-955页

作者： LIU Juan-xu YU Yi-xun lei Jian-jun CHEN guo-ju CAO Bi-hao College of Horticulture South China Agricultural University Guangzhou 510642 P.R. China Mid-Florida Research and Education Center Institute of Food and Agricultural Sciences University of Florida Apopka FL 32703-8504 USA

This study was designed to control plant fertility by cell lethal gene Barnase expressing at specific developmental stage and in specific tissue of male organ under the control of Cre/lox system, for heterosis breeding of chili pepper （Capsicum annuum L.）. Chili pepper inbred lines （A, D, E, and I） were transformed with Cre gene and Barnase gene situated between loxp, separately, by means of Agrobacterium co-culture. In this study, we had established a high transformation system by extensive study of affecting factors including genotype, selection of marker, and lethal dose. Cotyledon with petiole from 9-11-day-old seeding was pre-cultured on media MR[MB（MS mineral＋vitamine B5）＋BA（6-Benzyladenine） 5.0 mg·L^-1 ＋IAA（indoleacetic acid） 1.0 mg·L^-1＋gA3（gibberellic acid） 1.0mg·L^-1＋sucrose 3%＋agar 6.5g·L^-1] for 2d. The explants were infected by Agrobacterium tumefaciens when their OD600（optical density at 600 nm）reached 0.6-0.9. After co-cultured for 4-5 d on media MC [MB＋BA5.0 mg·L^-1＋IAA 1.0 mg·L^-1 ＋gA3 1.0 mg·L^-1＋sucrose 3% ＋agar 6.5 g·L^-1＋AS （acetosyringone） 200μmol·L^-1, these cotyledons with petiole were cultured on selective differentiation medium in the media MT[MB medium supplemented with BA [5.0 mg·L^-1＋ IAA 1.0 mg·L^-1＋ gA3 1.0 mg·L^-1＋ AgNO3 5.0 mg·L^-1＋ CW （coconut water） 5% ＋ Km （kanamycin） 65 mg·L^-1＋ Cb （carbenicillin） 500 mg·L^-1＋ 3% sucrose ＋ agar 6.5 g·L^-1].The Kmr （kanamycin resistant） bud rosettes were elongated on selective elongation medium and rooted on rooting medium. PCR and Southern blotting analysis of Kmr plantlet indicated that the foreign genes had been integrated into the genome of pepper. The transgenic plants with Cre gene developed well, blossomed out, and set fruit normally. The transgenic plants with Barnase gene grew well with normal appearance of flower, but they showed different fertility from complete sterility, partial sterility to complete fertility, and similar results were obtained from in vitro pollen germination experim

关键词： pepper (Capsicum annuum L.) genetic transformation male sterile ta29-Barnase Cre/lox system

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盐冻融循环对玄武岩纤维沥青混合料抗裂性能及微观结构的影响

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材料导报 2024年第S02期38卷 630-635页

作者：姚华彦王旭洋拓明阳孙磊扈惠敏合肥工业大学土木与水利工程学院合肥230009 北方民族大学土木工程学院银川750021 安徽省交通控股集团有限公司合肥230088

针对玄武岩纤维沥青混合料开展半圆弯拉试验(SCB)和核磁共振试验(NMR),研究盐冻融循环作用下玄武岩纤维对沥青混合料抗裂性能的影响。结果表明:冻融循环会降低沥青混合料的抗裂性能,氯盐会加速混合料的性能劣化。玄武岩纤维的掺入可以... 详细信息

针对玄武岩纤维沥青混合料开展半圆弯拉试验(SCB)和核磁共振试验(NMR),研究盐冻融循环作用下玄武岩纤维对沥青混合料抗裂性能的影响。结果表明:冻融循环会降低沥青混合料的抗裂性能,氯盐会加速混合料的性能劣化。玄武岩纤维的掺入可以提升沥青混合料的抗裂性能,盐溶液冻融循环20次后,相较于未掺纤维沥青混合料,玄武岩纤维沥青混合料试样的断裂韧度和断裂能高出47.5%和40.1%。核磁共振结果显示,随着冻融循环次数的增加,沥青混合料中小孔隙劣化转变为大孔隙,这是沥青混合料抗裂性能下降的主要原因。玄武岩纤维可以发挥增韧阻裂作用,阻碍小孔隙的劣化从而抑制大孔隙的形成,增强了沥青混合料的抗裂性能。

关键词：沥青混合料玄武岩纤维半圆弯拉试验(SCB) 抗裂性能核磁共振(NMR)

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