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Mitigating kinetic hindrance of single-crystal Ni-rich cathodes through morphology modulation,nickel reduction,and lithium vacancy generation achieved by terbium doping

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Journal of Energy Chemistry 2024年第10期97卷 566-574,I0012页

作者： Jiyuan Jian Shuang Lin Guokang Han Xianglian Zhan Yinghui Shan Rang Xiao Ziwei Liu Dandan Sun Xin Zhang qingjie zhou Geping Yin Hua Huo Yulin Ma Pengjian Zuo Xinqun Cheng Chunyu Du State Key Laboratory of Space Power-sources School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina Zibo Torch Energy Co.Ltd Zibo 255051ShandongChina

Single crystallization has proven to be effective in enhancing the capacity and stability of Ni-rich LiNi_(1-x-y)Co_(x)Mn_(y)O_(2)(SNCM)cathode materials,particularly at high cut-off ***,the synthesis of high-quality single-crystal particles remains challenging because of severe particle agglomeration and irregular ***,the limited kinetics of solid-phase Li^(+)diffusion pose a significant concern because of the extended diffusion path in large single-crystal *** address these challenges,we developed a Tb-doped single-crystal LiNi_(0.83)Co_(0.11)Mn_(0.06)O_(2)(SNCM-Tb)cathode material using a straightforward mixed molten salt sintering *** Tb-doped Ni-rich single crystals presented a quasi-spherical morphology,which is markedly different from those reported in previous ***^(4+)oping significantly enhanced the dynamic transport of Li^(+)ions in the layered oxide phase by reducing the Ni valence state and creating Li vacancies.A SNCM-Tb material with 1 at%Tb doping shows a Li^(+)diffusion coefficient up to more than 9 times higher than pristine SNCM in the non-diluted *** situ X-ray diffraction analysis demonstrated a significantly facilitated H1-H2-H3 phase transition in the SNCM-Tb materials,thereby enhancing their rate capacity and structural ***-Tb exhibited a reversible capacity of 186.9 mA h g^(-1)at 5 C,retaining 94.6%capacity after 100 cycles at 0.5 C under a 4,5 V *** study elucidates the Tb^(4+)doping mechanisms and proposes a scalable method for enhancing the performance of single-crystal Ni-rich NCM materials.

关键词： Lithium-ion batteries Ni-rich layered oxides Single crystals Tb^(4+) doping Li^(+) diffusion kinetics

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市场监管视角下的职业打假行为研究

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中国市场监管研究 2024年第1期 41-44页

作者：周清杰王松莹北京工商大学新商业经济研究院北京工商大学经济学院

市场监管的根本目的在于规范市场秩序。从产品质量安全监管的角度看,打击制假售假是市场监管的一项重要工作。职业打假可以看作是社会共治体系的一部分,这种特殊类型的公众监督不仅可以减少市场中的问题产品,降低这些产品对市场的危害,... 详细信息

市场监管的根本目的在于规范市场秩序。从产品质量安全监管的角度看,打击制假售假是市场监管的一项重要工作。职业打假可以看作是社会共治体系的一部分,这种特殊类型的公众监督不仅可以减少市场中的问题产品,降低这些产品对市场的危害,也可以部分缓解因监管资源不足所导致的监管缺位,提高社会共治的专业水准和效能。

关键词：职业打假市场监管社会共治激励机制

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多子小瓜虫PCR和SYBR Green实时荧光定量PCR检测方法的建立及应用

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水产学报 2024年第10期48卷 163-170页

作者：曹泽艺周庆杰陈凯习丙文谢骏潘良坤毛颖南京农业大学无锡渔业学院中国水产科学研究院淡水渔业研究中心农业农村部稻渔综合种养生态重点实验室宜兴市水产畜牧站

为克服现有小瓜虫病的显微镜检和PCR诊断等方法在该寄生虫的感染早期阶段和环境样本检测中存在的缺陷，建立特异性强、灵敏度高的多子小瓜虫PCR检测方法，实验根据多子小瓜虫线粒体COⅠ序列设计和筛选了一对引物，经过PCR程序优化、特... 详细信息

为克服现有小瓜虫病的显微镜检和PCR诊断等方法在该寄生虫的感染早期阶段和环境样本检测中存在的缺陷，建立特异性强、灵敏度高的多子小瓜虫PCR检测方法，实验根据多子小瓜虫线粒体COⅠ序列设计和筛选了一对引物，经过PCR程序优化、特异性、灵敏性验证以及临床和环境样品检测分析，分别建立了普通PCR和荧光定量PCR检测方法。结果显示，本研究获得的检测引物对多子小瓜虫有较高的扩增特异性，对同属纤毛虫类的草履虫、四膜虫和肠袋虫以及常见养殖鱼类宿主异育银鲫、草鱼、尼罗罗非鱼和团头鲂等样本均无扩增；扩增特异性和灵敏度都优于文献报道的方法。其中，普通PCR最低检测的样本浓度为掠食体2.67个/μL，荧光定量PCR在掠食体0.02个/μL时依然能有效检出，荧光定量PCR检测灵敏度高于普通PCR。研究表明，在临床样本和养殖水环境样本检测应用中，基于该引物的两种PCR方法表现出很高的一致性，能有效检出潜伏感染鱼体和养殖水环境中的多子小瓜虫。本研究所建立的多子小瓜虫的检测方法特异性强、灵敏度高，适用于淡水养殖中小瓜虫病的早期诊断和病原体的检测。

关键词：多子小瓜虫 PCR 荧光定量PCR 小瓜虫病检测方法

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企业边界:基于动态效率的分析

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财经科学 2006年第10期 40-46页

作者：周清杰北京工商大学产业经济研究中心

企业边界是企业理论关注的一个焦点,不同的理论分支对之有不一样的见解。本文在批判了新制度经济学中用边际交易成本解释企业边界论的基础上,从企业的知识、能力出发,按照动态效率标准对企业边界提出了自己的看法,即企业依据自身情况制... 详细信息

企业边界是企业理论关注的一个焦点,不同的理论分支对之有不一样的见解。本文在批判了新制度经济学中用边际交易成本解释企业边界论的基础上,从企业的知识、能力出发,按照动态效率标准对企业边界提出了自己的看法,即企业依据自身情况制定的发展战略是影响企业边界的重要因素。

关键词：企业边界知识能力动态效率

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Prediction for Potential Landslide Zones Using Seismic Amplitude in Liwan Gas Field, Northern South China Sea

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Journal of Ocean University of China 2017年第6期16卷 1035-1042页

作者： LI Xishuang LIU Baohua LIU Lejun ZHENG Jiewen zhou Songwang zhou qingjie First Institute of Oceanography State Oceanic Administrator Qingdao 266061 P. R. China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071 P. R. China National Deep Sea Center Qingdao 266237 P. R. China Survey Center of China Oilfield Services Limited Tianjin 300451 P. R. China

The Liwan(Lw) gas field located in the northern slope of the South China Sea(SCS) is extremely complex for its seafloor topograghy, which is a huge challenge for the safety of subsea facilities. It is economically impractical to obtain parameters for risk assessment of slope stability through a large amount of sampling over the whole field. The linkage between soil shear strength and seabed peak amplitude derived from 2D/3D seismic data is helpful for understanding the regional slope-instability risk. In this paper, the relationships among seabed peak, acoustic impedance and shear strength of shallow soil in the study area were discussed based on statistical analysis results. We obtained a similar relationship to that obtained in other deep-water areas. There is a positive correlation between seabed peak amplitude and acoustic impedance and an exponential relationship between acoustic impedance and shear strength of sediment. The acoustic impedance is the key factor linking the seismic amplitude and shear strength. Infinite slope stability analysis results indicate the areas have a high potential of shallow landslide on slopes exceeding 15? when the thickness of loose sediments exceeds 8 m in the Lw gas field. Our prediction shows that they are mainly located in the heads and walls of submarine canyons.

关键词： seismic amplitude acoustic impedance shear strength slope stability analysis northern South China Sea

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脂质水胶体技术在创面愈合中的应用进展

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中华损伤与修复杂志（电子版） 2024年第4期19卷 360-363页

作者：周清洁蒋萍萍梁云李琰首都医科大学附属北京积水潭医院骨科门诊换药室 100035 复旦大学附属中山医院青浦分院门诊换药室上海201700 首都医科大学附属北京积水潭医院烧伤科 100035 上海市东方医院、同济大学附属东方医院老年医学科 200120

创面愈合是人体自然修复损伤的重要过程,对于恢复组织功能和预防感染至关重要。创面延迟愈合可能导致伤口感染、组织再生受损和慢性创面形成。脂质水胶体敷料作为一种新型创面处理材料,因其独特的脂质水胶体技术的生物兼容性和潜在的治... 详细信息

创面愈合是人体自然修复损伤的重要过程,对于恢复组织功能和预防感染至关重要。创面延迟愈合可能导致伤口感染、组织再生受损和慢性创面形成。脂质水胶体敷料作为一种新型创面处理材料,因其独特的脂质水胶体技术的生物兼容性和潜在的治疗效果,引起了广泛的关注。本综述旨在总结脂质水胶体技术在促进常见创面愈合方面的进展,并探讨其在临床应用中的优势与所面临的挑战。

关键词：创面愈合脂质水胶体技术治疗应用

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Mass movements in small canyons in the northeast of Baiyun deepwater area, north of the South China Sea

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Acta Oceanologica Sinica 2015年第8期34卷 35-42页

作者： LI Xishuang LIU Lejun LI Jiagang GAO Shan zhou qingjie SU Tianyun The First Institute of Oceanography State Oceanic Administration Research Center of China National Offshore Oil Corporation

The process of mass movements and their consequent turbidity currents in large submarine canyons has been widely reported, however, little attention was paid to that in small canyons. In this paper, we document mass movements in small submarine canyons in the northeast of Baiyun deepwater area, north of the South China Sea （SCS）, and their strong effects on the evolution of the canyons based on geophysical data. Submarine canyons in the study area arrange closely below the shelf break zone which was at the depth of -500 m. Within submarine canyons, seabed surface was covered with amounts of failure scars resulted from past small-sized landslides. A complex process of mass transportation in the canyons is indicated by three directions of mass movements. Recent mass movement deposits in the canyons exhibit translucent reflections or parallel reflections which represent the brittle deformation and the plastic deformation, respectively. The area of most landslides in the canyons is less than 3 km2. The trigger mechanisms for mass movements in the study area are gravitational overloading, slope angle and weak properties of soil. Geophysical data indicate that the genesis of submarine canyons is the erosion of mass movements and consequent turbidity currents. The significant effects of mass movements on canyon are incision and sediment transportation at the erosion phases and fillings supply at the fill phases. This research will be helpful for the geological risk assessments and understanding the sediment transportation in the northern margin of the SCS.

关键词： mass movement geophysical data trigger mechanism submarine canyon north of the South China Sea

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Stabilizing electrode-electrolyte interface for high-performance SiO_(x) anode by dual electrolyte additive

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Journal of Energy Chemistry 2023年第11期86卷 32-40,I0002页

作者： Renlong Li Binghan Cui qingjie zhou Xue Mu Yunzhi Gao Geping Yin Chuankai Fu Pengjian Zuo MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina

Macro-and micro-interface instability of SiO_(x)anode caused by its dramatic volume variation during cycling will result in low Coulombic efficiency and rapid capacity *** this work,an organic-inorganic composite interfacial layer rich in benzene ring groups,polyisocyanates,and LiF was obtained on SiO_(x)anode by the introduction of 4-fluorophenyl isocyanate(FPI)and fluoroethylene carbonate(FEC)co-additives in *** SiO_(x)anode material shows a capacity retention of 69.2%after 100 cycles at a current density of 1 A g^(-1)and rate capacity of 523 m A h g^(-1)at the current density of 3A g^(-1),while the SiO_(x)anode cycling in reference electrolyte has almost no capacity.

关键词： Lithium-ion batteries SiO_(x) anode SEI film Electrolyte additive Interfacial stability

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Morphological,histological and molecular characteristics of Myxobolus spp.(Cnidaria:Myxozoa)infecting the kidney of silver carp in Lake Taihu

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Zoological Systematics 2023年第2期48卷 159-168页

作者： qingjie zhou Zeyi Cao Zhipeng Gao Bingwen Xi Kai Liu Wuxi Fisheries College Nanjing Agricultural UniversityWuxi 214081China Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization Ministry of Agriculture and Rural AffairsFreshwater Fisheries Research CenterChinese Academy of Fishery SciencesWuxi 214081China

Myxozoans are common microscopic endoparasites in fish,and some are highly pathogenic to their wild and farmed fish *** the present study,myxosporeans infection in the kidney of silver carp Hypophthalmichthys molitrix(Valenciennes,1844)from Lake Taihu,was investigated,and two dominate species,Myxobolus lieni(Nie&Li,1973)and ***(Achmerov,1960),with infection prevalence 60.2%and 35.2%,respectively,were well characterized based on morphological,histopathological and DNA sequence *** formed small roundish plasmodia in the epithelial cells of renal *** mature myxospores appeared suborbicular,slightly flat in frontal view and fusiform shaped in sutural *** myxospores of *** were found in the renal interstitium without forming plasmodia structures and enclosed within melano-macrophage *** spore appeared elliptical in frontal view,with wider anterior than posterior and shuttle shaped in sutural ***,the occurrence of myxozoans in the kidney detected with SSU rDNA PCR and clone sequencing,revealed co-infection of five Myxobolus *** search indicated SSU r DNA gene sequences obtained here were not identical to any sequence available in *** analyses showed that the five Myxobolus species detected here were clustered together,forming a separate clade of cyprinid-infecting myxozoans.

关键词： Silver carp myxozoan histopathological phylogenetic analysis

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Sports Foster Friendship China-Africa sports diplomacy has achieved fruitful results

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ChinAfrica 2023年第11期15卷 18-21页

作者： zhou qingjie Sports Exchange and Research Centre China Foreign Affairs University

The widely known ping pong diplomacy led to the establishment of Sino-US diplomatic relations after a two-decade breakdown,and became a major historical event that promoted the development of relations between countries and even changed the international ***,what is little known is that the ping pong diplomacy was actually used much earlier when China established diplomatic relations with African countries in the 1950s and *** fact,in addition to ping pong diplomacy,sports diplomacy between China and African countries has always played an important role in bringing the two sides closer.

关键词： Foster ping bringing

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