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Easily Obtaining Excellent Performance High-voltage LiCoO_(2)via Pr_(6)O_(11)Modification

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Energy & Environmental Materials 2023年第2期6卷 34-44页

作者： Yongcong Huang Chenjie Xu Jingguo Gao Liao shen Qian Liu Guiying Zhao Qingshui Xie Yingbin Lin jiaxin Li Zhigao Huang College of Physics and Energy Fujian Provincial Solar Energy Conversion and Energy Storage Engineering Technology Research CenterFujian Normal UniversityFuzhou 350117China Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials Fuzhou 350117China Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering Fuzhou 350117China State Key Laboratory for Physical Chemistry of Solid Surfaces Fujian Key Laboratory of Materials GenomeCollaborative Innovation Center of Chemistry for Energy MaterialsCollege of MaterialsXiamen UniversityXiamen 361005China

Developing an effective method to synthesize high-performance high-voltage LiCoO_(2) is essential for its industrialization in lithium batteries(LIBs).This work proposes a simple mass-produced strategy for the first time,that is,negative temperature coefficient thermosensitive Pr_(6)O_(11) nanoparticles are uniformly modified on LiCoO_(2) to prepare LiCoO_(2)@Pr_(6)O_(11)(LCO@PrO)via a liquid-phase mixing combined with annealing *** at 274 mA g−1,the modified LCO@PrO electrodes deliver excellent 4.5 V high-voltage cycling performance with capacity retention ratios of 90.8%and 80.5%at 25 and 60℃,being much larger than those of 22.8%and 63.2%for bare LCO *** effective strategies were used to clearly unveil the performance enhancement mechanism induced by Pr_(6)O_(11) *** is discovered that Pr_(6)O_(11) can improve interface compatibility,exhibit improved conductivity at elevated temperature,thus enhance the Li^(+)diffusion kinetics,and suppress the phase transformation of LCO and its resulting mechanical *** 450 mAh LCO@PrO‖graphite pouch cells show excellent LIB performance and improved thermal safety ***,the energy density of such pouch cell was increased even by~42%at 5 *** extremely convenient technology is feasible for producing high-energy density LIBs with negligible cost increase,undoubtedly providing important academic inspiration for industrialization.

关键词： high-voltage LiCoO_(2) pouch cell Pr_(6)O_(11)modification simple massproduction thermal safety

The Odd Solutions of Equations Involving Euler-Like Function

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Advances in Pure Mathematics 2021年第5期11卷 440-446页

作者： jiaxin Wu Zhongyan shen Department of Mathematics Zhejiang International Studies University Hangzhou China

φe(n) is a function similar to Euler function φ(n). We discussed and obtained all the odd solutions of the equations φe(xy) = φe(x) + 2φe(y), φe(xy) = 2φe(x) + 3φe(y) and

关键词： Euler-Like Function Diophantine Equation Odd Solutions

Molecular characterization of organic matter transformation mediated by microorganisms under anoxic/hypoxic conditions

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Science China Earth Sciences 2023年第4期66卷 894-909页

作者： Shicong XIAO jiaxin CHEN Yuan shen Qi CHEN Yu WANG Yunyun LI Chen HE Ruanhong CAI Quan SHI Nianzhi JIAO Qiang ZHENG State Key Laboratory for Marine Environmental Science College of Ocean and Earth SciencesXiamen UniversityXiamen 361102China Fujian Key Laboratory of Marine Carbon Sequestration Xiamen 361102China College of Environment and Ecology Xiamen UniversityXiamen 361102China State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249China

Dissolved organic matter(DOM) in the ocean is one of the largest carbon pools on Earth. Microbial metabolism is an important process that shapes the marine DOM pool. Current studies on the interactions between microorganisms and DOM focus mainly on oxic environments. Few studies have addressed the molecular characteristics of DOM in microbial-mediated transformation under anoxic/hypoxic conditions. As a result of deteriorating water quality due to eutrophication and global warming, anoxia occurs frequently in coastal waters. In this study, we performed an experiment to investigate changes in microbial community responses and the molecular characteristics of DOM in microbial-mediated transformation under hypoxic conditions. We compared microbial-mediated DOM transformation at different dissolved oxygen levels(7, 5, and 2 mg L^(-1)) and in different media(natural and artificial seawater with and without laminarin). We also investigated differences in DOM composition between groups using spectroscopic analysis and ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry. The results showed decreased microbial metabolic activity and delayed community succession at low oxygen(≤2 mg L^(-1)) in natural seawater supplemented with laminarin. The growth of strictly aerobic bacteria such as Pseudomonadaceae and Sphingomonadaceae was inhibited and the total organic carbon utilization rate was reduced by 36.9–46.7% from 4 to 32days. Moreover, tyrosine-like and tryptophan-like components were preserved, while DOM humification and modified aromaticity indices were significantly reduced under low oxygen conditions. This experiment provides justification for further study of the processes and mechanisms of improved labile DOM preservation in anoxic estuarine and coastal waters.

关键词： Anoxic/hypoxic Microbial community structure Dissolved organic matter Chemical characteristics of molecule

羟基功能化CMP吸附染料、低共熔溶剂及废旧锂电回收浸出液

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当代化工研究 2024年第14期 64-66页

作者：杨梓藤申雅雪陈佳欣刘冲赵娣陈钰廊坊师范学院化学与材料科学学院河北065000

染料和低共熔溶剂的广泛使用会产生大量的废液,同时低共熔溶剂在回收锂离子电池正极材料过程中也会产生含钴、锂离子的浸出液。本文发现羟基功能化二维共轭微孔聚合物(Two-dimensional Conjugated Microporous Polymer,CMP)能高效回收... 详细信息

染料和低共熔溶剂的广泛使用会产生大量的废液,同时低共熔溶剂在回收锂离子电池正极材料过程中也会产生含钴、锂离子的浸出液。本文发现羟基功能化二维共轭微孔聚合物(Two-dimensional Conjugated Microporous Polymer,CMP)能高效回收染料废液、低共熔溶剂及锂电回收浸出液。羟基功能化CMP对乙二醇:抗坏血酸(10:1)DESs含钴酸锂的浸出液吸附效率高达1031.5%。

关键词：低共熔溶剂绿色化学染料废水二维共轭微孔聚合物废旧锂离子电池

新型冠状病毒肺炎疫情防控一级响应对经内镜建立肠内营养通路时机的影响

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福建医科大学学报 2021年第1期55卷 32-35页

作者：郑一星魏晶晶王玉萍王君玺沈嘉昕张培红庄则豪福建医科大学附属第一医院消化内镜中心福州350005

目的评价新型冠状病毒肺炎(COVID-19)疫情防控一级响应对经胃肠内镜建立肠内营养通路(EENA)时机的影响。方法回顾性分析笔者医院在福建省COVID-19疫情防控一级响应期内(一级响应组)、疫情发生前1 a(常态诊疗组)及既往5 a春节期间(历年... 详细信息

目的评价新型冠状病毒肺炎(COVID-19)疫情防控一级响应对经胃肠内镜建立肠内营养通路(EENA)时机的影响。方法回顾性分析笔者医院在福建省COVID-19疫情防控一级响应期内(一级响应组)、疫情发生前1 a(常态诊疗组)及既往5 a春节期间(历年春节组)急诊胃肠内镜中EENA病例的构成比。结果一级响应期间完成急诊胃肠镜123例,无院内感染发生。一级响应组EENA比例为37.40%(46/123),与常态诊疗组的35.31%(510/1444)比较,差别无统计学意义(P>0.05),较历年春节组的2.17%(1/46,1例为肠梗阻导管置管)增高(P0.05)。结论在一级响应期间仍存在经内镜EENA的现实需求,有必要将其调整为急诊胃肠镜适应证。

关键词：新型冠状病毒肺炎公共卫生突发事件一级响应急诊胃肠镜肠内营养通路

Dual-crosslinked regenerative hydrogel for sutureless long-term repair of corneal defect

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Bioactive Materials 2023年第2期20卷 434-448页

作者： Xuanren shen Saiqun Li Xuan Zhao Jiandong Han jiaxin Chen Zilong Rao Kexin Zhang Daping Quan Jin Yuan Ying Bai Guangdong Engineering Technology Research Centre for Functional Biomaterials School of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou510006China State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-sen UniversityGuangzhou510623China

Corneal transplantation is the most effective clinical treatment for corneal defects,but it requires precise size of donor corneas,surgical sutures,and overcoming other technical *** patients may suffer graft rejection and complications caused by *** glues that can long-term integrate with the corneal tissue and effectively repair the focal corneal damage are highly ***,a hybrid hydrogel consisting of porcine decellularized corneal stroma matrix(pDCSM)and methacrylated hyaluronic acid(HAMA)was developed through a non-competitive dual-crosslinking *** can be directly filled into corneal defects with various *** importantly,through formation of interpenetrating network and stable amide bonds between the hydrogel and adjacent tissue,the hydrogel manifested excellent adhesion properties to achieve suture-free ***,the hybrid hydrogel not only preserved bioactive components from pDCSM,but also exhibited cornea-matching transparency,low swelling ratio,slow degradation,and enhanced mechanical properties,which was capable of withstanding superhigh intraocular *** combinatorial hydrogel greatly improved the poor cell adhesion performance of HAMA,supported the viability,proliferation of corneal cells,and preservation of keratocyte *** a rabbit corneal stromal defect model,the experimental eyes treated with the hybrid hydrogel remained transparent and adhered intimately to the stroma bed with long-term retention,accelerated corneal re-epithelialization and wound *** the advantages of high bioactivity,low-cost,and good practicality,the dual-crosslinked hybrid hydrogel served effectively for long-term suture-free treatment and tissue regeneration after corneal defect.

关键词： Corneal defect Decellularized extracellular matrix Hydrogel Sutureless repair Cornea regeneration

Metal-free synthesis of N-sulfonylformamidines via skeletal reconstruction of sulfonyl oximonitriles

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Organic Chemistry Frontiers 2022年第3期9卷 627-632页

作者： Feng Li Ziyan Wu Jingjing Wang Siyuan Zhang jiaxin Yu Zhen Yuan Jingya Liu Renzeng shen Yao Zhou Lantao Liu Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals College of Chemistry and Chemical EngineeringShangqiu Normal UniversityShangqiuHenan476000P.R.China Hubei Key Laboratory of Pollutant Analysis&Reuse Technology College of Chemistry and Chemical EngineeringHubei Normal UniversityHuangshiHubei435002P.R.China College of Chemistry Zhengzhou UniversityZhengzhouHenan450052P.R.China

We developed for the first time an unprecedented domino reaction of sulfonyl oximonitriles with secondary amines to streamline the synthesis of N-sulfonylformamidines in decent to high yields under mild reaction *** addition,scale-up experiments and late-stage functionalization of drugs were also *** studies indicate that the loss of a cyano-/benzyloxy-group and a sulfonyl migration process are involved in this reaction.

关键词： reaction conditions synthesis

电泳法测量胶体ζ电势的实验方法探究和仪器创新

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大学化学 2024年第5期39卷 345-353页

作者：梁峰李得胜蒋玉婷董家新刘冬成沈星灿广西师范大学化学与药学学院化学国家级实验教学示范中心(广西师范大学)广西桂林541004

物理化学实验“电泳法测量胶体ζ电势”中存在胶体纯化耗时长、界面位置测量精度低等影响实验教学效果的问题。针对这些问题,本文探索了采用酸碱离子交换树脂快速、大量、可重复地纯化Fe(OH)_(3)胶体的方法和条件;创新性设计了利用数显... 详细信息

物理化学实验“电泳法测量胶体ζ电势”中存在胶体纯化耗时长、界面位置测量精度低等影响实验教学效果的问题。针对这些问题,本文探索了采用酸碱离子交换树脂快速、大量、可重复地纯化Fe(OH)_(3)胶体的方法和条件;创新性设计了利用数显标尺和挡光片辅助精密测量胶体界面位置的装置,并将其和电泳管固定支架集成为一套专用仪器。更高的界面位置测量精度允许将电泳测量时间缩短至5 min,减小了电泳时间过长引起的电位梯度变化的影响。将改进后的方法和仪器应用于实验教学,学生的实验效率得到提高,测量结果偏差小,重复性好,为在实验教学中增加探索性实验奠定了基础。

关键词： ζ电势电泳氢氧化铁胶体离子交换仪器创新

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全球电动汽车能量管理专利情报与我国发展路线研究

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中国发明与专利 2024年第6期21卷 56-65页

作者：臧琳刘佳鑫翟诺沈悦王春蕾李彦奇中国第一汽车股份有限公司研发总院长春130013 东北师范大学信息科学与技术学院长春130117 东北师范大学国家知识产权信息服务中心长春130024 一汽奔腾汽车股份有限公司长春130012

本文采用专利大数据分析方法,深入探讨了全球电动汽车智能能量管理策略的研究现状,对比了国内外在该领域的研究差异,并分析了专利申请趋势、地域分布、技术主题等多维度信息。研究揭示了智能能量管理策略的技术热点和发展趋势,旨在为国... 详细信息

本文采用专利大数据分析方法,深入探讨了全球电动汽车智能能量管理策略的研究现状,对比了国内外在该领域的研究差异,并分析了专利申请趋势、地域分布、技术主题等多维度信息。研究揭示了智能能量管理策略的技术热点和发展趋势,旨在为国内智能能量管理技术的研发和企业提供有益的参考和指导。

关键词：电动汽车能量管理策略专利分析