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Encapsulating manganese oxide nanoparticles within conducting polypyrrole via in situ redox reaction and oxidative polymerization for long-life lithium-ion batteries

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Rare Metals 2021年第9期40卷 2415-2423页

作者： He-liang Yao Shan-Shan Gao Zheng-Qian Fu Wei-Chao Bao Zhong-Hui Cui yi-qiu li Fang-Fang Xu State Key Laboratory of High Performance Ceramics and Superﬁne Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China

Manganese oxides(MnO_(x)) have been extensively investigated due to their extremely high theoretical capacities for application as conversion anodes in lithiumion batteries. However, fully performing their theoretical performance still faces poor electric conductivity and serious volume change upon lithium insertion/***, we demonstrate encapsulating manganese oxide nanoparticles within a conducting polymer polypyrrole(PPy) shell as a facile strategy to overcome such flaws through in situ redox reaction and oxidative polymerization process. Such an in situ method combines the redox reaction between potassium permanganate and tetrahydrofuran to form MnO_(x)nanoparticles and the subsequent oxidative polymerization of pyrrole to form a conductive polypyrrole coating shell by the oxidant KMnO_(4) into one step. For the as-fabricated products(MnO_(x)@PPy), this tenderly introduced conductive PPy shell highly favors the fast electron transfer and preserves the electrode structure integrity upon repeated cycling. As the anode for liBs, MnO_(x)@PPy exhibits superior lithium storage performance with a high reversible capacity(1538 mAh·g^(-1)), long-life cyclability(747 mAh·g^(-1) after 1000 cycles at 1.0 C) and durable ratability(574 mAh·g^(-1) at 2.0 C). This work demonstrates that the convenient in situ strategy to form conductive polymer coating shell is effective to improve the performance of conversion anodes and can be extended to other materials for energy storage applications.

关键词： Manganese oxide Polypyrrole High cycling performance lithium-ion battery

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A Cd-based MOF crystal vessel for the synthesis of interhalogens

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Chinese Journal of Structural Chemistry 2023年第9期42卷 18-25页

作者： Min-Jie Zhang Yu Ge Chen Cao Xin-Ran Xue qiu-yi li Qi liu Jian-Ping Lang College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu215123People's Republic of China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai200032People's Republic of China

As important halogenating and oxidant agents,the synthesis and utilization of interhalogens are plagued by their purity problem,strong volatility and high ***,a flexible Cd-based metal-organic framework(MOF),{[Cd(1,4-bdc)(4-bpa)]·DMF}_(n)(1,where 4-bpa=1,2-bis(4-pyridyl)acetylene),was prepared and its corresponding activation species,[Cd(1,4-bdc)(4-bpa)]_(n)(2),with moderate pore size and shape,acting as a crystal vessel,was applied to synthesize and store pure *** synthesis of interhalogen was realized by quantitive transformation of halogen molecules incorporated in the pores of 2,which was confirmed by single-crystal X-ray diffraction and other structural *** embedded interhalogen molecules were stabilized by their interactions with the inner groups of the porous framework of 2 and released in polar solvent and utilized in iodocyclization of organic alcohols with high *** work not only opens a new door to the synthesis of pure interhalogens but also demonstrates powerful applications of MOF crystal vessels in realizing classic but important inorganic and organic reactions.

关键词： MOFs Crystal vessel Interhalogens Crystal structures Iodocyclization

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Studies on Material Cycling in Evergreen Broad-Leaved Forest Ecosystem in Hangzhou: Ⅱ . Dynamics and Decomposition Characteristics of litter

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Pedosphere 1993年第3期3卷 231-238页

作者： JIANG qiu-yi, HE li-MING, YU yi-WU, SHI DE-FA and QIAN XIN-BIAOZhejiang Forestry College, lin an, Zhejang 311300 (China)

Through the long-term plot study on the litter and its decomposition in the evergreen broad-leaved forest ecosystem in Hangzhou for more than two years,it was resulted that the annual litter production was 5.85 t ha^-1,most of which was the fallen leave (79.5 percent) and the withered branches and fruits were far less (7.1 and 13.4 percents respectively).The dynamics of the fallen litter was shown as a curve of two-peak pattern which appeared in April and September each *** half-life of the litter was 1.59 *** decay rate of the litter attenuted as an exponential *** annual amount of the nutrient returned to the ground through the litter was as large as 223.69kg ha^-*** total current amount of the litter on the ground was 7.47t ha^-*** decay rate in the first half of a year was 45.18 *** ecosystem remained in the stage of litter increasing with time.

关键词： ecosystem evergreen broad-leaved forest litter decomposition nutrient return

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Studies on Material Cycling in Evergreen Broad-Leaved Forest Ecosystem in Hangzhou: Ⅰ. Precipitation Distribution

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Pedosphere 1993年第3期3卷 221-230页

作者： JIANG qiu-yi, HE li-MING, YU yi-WU, CHEN GUO-RUI and SHI DE-FAZhejiang Forestry College, lin’an. Zhejiang 311300 (China)

Through the long-term plot studies on the precipitation distribution in the evergreen broad-leaved forest ecosystem in Hangzhou for two years, it was indicated that the pattern of precipitation distribution included larger amounts of penetration water and stemflow and a lower amount of interception water. The results revealed that the main factors to infulence the percentages of penetration and stemflow were the air temperature and the leaf area of the forest. The quantity of seepage through the litter layer was much larger than that through the soil layers which decreased sharply with soil depth. The output of water from the ecosystem by surface runoff and deep infiltration through the soil was much lower, only being 5.20 percent of the rainfall, while the water evapotranspiration loss was as large as more than 90 percent of it. The losses by the soil evaporation and plant evapotranspiration were the largest part of output in this forest ecosystem.

关键词： ecosystem evergreen broad-leaved forest rainfall water balance

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Electrocatalytic cleavage of a lignin β-O-4 model compound and coupling with nitrogen-containing aromatics using Prussian blue analogue-derived nickel–cobalt spinel

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Journal of Energy Chemistry 2025年第1期100卷 628-636页

作者： yi Qi Xueying Chen Bowen liu Xuliang lin Xueqing qiu Yanlin Qin Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light Industry Guangdong University of Technology Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center Guangdong Basic Research Center of Excellence for Ecological Security and Green Development Guangdong University of Technology

Electrochemical conversion of lignin for the production of high-value heterocyclic aromatic compounds has great *** demonstrate the targeted synthesis and cation modulation of NiCo2O4spinel nanoboxes,synthesized via cation exchange and calcination *** catalysts exhibit excellent efficacy in the electrocatalytic conversion of lignin model compounds,specifically 2-phenoxy-1-phenylethanol,into nitrogen-containing aromatics,achieving high conversion rates and *** catalysts were synthesized via a cation exchange and calcination oxidation process,using Prussian blue nanocubes as *** porous architecture and polymetallic composition of the NiCo2O4spinel demonstrated superior performance in electrocatalytic oxidative coupling,achieving a 99.2 wt%conversion rate of the 2-phenoxy-1-phenylethanol with selectivities of 37.5 wt%for quinoline derivatives and 31.5 wt%for *** innovations include the development of a sustainable one-pot synthesis method for quinoline derivatives,the elucidation of a multistage reaction pathway involving CAO bond cleavage,hydroxyaldol condensation,and CAN bond formation,and a deeper mechanistic understanding derived from DFT *** work establishes a new strategy for lignin valorization,offering a sustainable route to produce high-value nitrogen-containing aromatics from renewable biomass under mild conditions,without the need for additional reagents.

关键词： Spinel Biomass valorization Electrocatalysis lignin oxidation Coupling

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信息技术作用下的课程文化变革思维

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教育研究 2017年第9期38卷 92-98页

作者：邱相彬李艺沈书生南京师范大学教育科学学院湖州师范学院

课程文化发展与变迁历经课程物质文化变革、制度文化变革和精神文化变革。课程本质上是一种具有教育目的的特殊文化,课程文化遵循着文化变迁的规律而发生着改变,课程变革的本质是课程文化的整体变迁,信息文化正作为一种新的文化形态逐... 详细信息

课程文化发展与变迁历经课程物质文化变革、制度文化变革和精神文化变革。课程本质上是一种具有教育目的的特殊文化,课程文化遵循着文化变迁的规律而发生着改变,课程变革的本质是课程文化的整体变迁,信息文化正作为一种新的文化形态逐步形成和完善。我们理应以价值理性取代工具理性,用变革思维超越整合思维,让信息技术与教育达成深度融合,推动课程进入更深层次变革。

关键词：课程变革课程文化信息文化

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有为政府与有效市场下的我国职业教育治理:理论逻辑与实践路径

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高校教育管理 2025年第1期19卷 62-73页

作者：李政邱懿华东师范大学职业教育与成人教育研究所上海200062 中华人民共和国教育部职业教育与成人教育司北京100816 北京大学教育学院北京100871

政府与市场的关系是职业教育内外部治理关系的核心,先后经历了政府主导论、市场基础论、有为政府与有效市场论的演变。在有为政府与有效市场的关系形塑下,职业教育治理改革应实现三大转变,即政府治理方式应从事后响应转变为事前布局,职... 详细信息

政府与市场的关系是职业教育内外部治理关系的核心,先后经历了政府主导论、市场基础论、有为政府与有效市场论的演变。在有为政府与有效市场的关系形塑下,职业教育治理改革应实现三大转变,即政府治理方式应从事后响应转变为事前布局,职业院校治理角色应从代理主体转变为改革先锋,市场主体参与治理的动机应从短期利益转变为战略投资。政府、职业院校和市场的关系应由单向的“影响回应”关系转变为双向的“并行互动”关系。当前,我国政府参与职业教育治理的权责边界不清,职业院校办学自主权无法满足发展需求,市场主体参与职业教育缺乏战略自觉。为此,我国应加强各级政府的政策协作,提升政府政策的精准度和前瞻性;优化职业院校组织定位和内部治理模式,提升学校治理的灵活性和有效性;深度分析企业发展的外部条件和内部需求,提升企业发展的积极性和适应性。

关键词：职业教育治理有为政府有效市场全面深化改革办学自主权

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水平和竖向地震作用下顺层岩质边坡动力可靠性分析

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土木工程学报 2017年第10期50卷 91-98,128页

作者：陈训龙龚文惠钟旭晗邱金伟李逸华中科技大学湖北武汉430074

由于传统顺层岩质边坡地震可靠性分析往往是基于拟静力法,忽略了地震的动力特性,而基于数值模拟软件的地震时程分析法虽能考虑地震的动态性,却相对费时费力,该文同时考虑了地震的动力特性和强度参数随机性,提出顺层岩质边坡动力可靠性... 详细信息

由于传统顺层岩质边坡地震可靠性分析往往是基于拟静力法,忽略了地震的动力特性,而基于数值模拟软件的地震时程分析法虽能考虑地震的动态性,却相对费时费力,该文同时考虑了地震的动力特性和强度参数随机性,提出顺层岩质边坡动力可靠性分析方法。运用Wilson-θ法和Matlab/Simulink工具建立了顺层岩质边坡地震响应简化计算方法。根据响应结果,运用Monte Carlo法计算了边坡的动力可靠度,并提出采用整体最小平均可靠度来评价边坡的地震整体可靠性。在此基础上,进一步分析了水平和竖向地震作用的叠加模式对顺层岩质边坡可靠性的影响。算例分析表明,提出的地震响应简化计算方法具有较高的计算精度和效率。该文可靠度分析方法低估了边坡的地震可靠性。与水平地震作用相比,竖向地震作用对顺层岩质边坡可靠性的影响也很明显。常用的水平和竖向地震作用的峰值叠加模式并不能充分地体现出双向地震的最大作用叠加效果,而采用双向地震的最大作用叠加模式更偏于工程安全。

关键词：顺层岩质边坡水平和竖向地震作用动力可靠度 Wilson-θ法地震响应

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Inhibitory gamma-aminobutyric acidergic neurons in the anterior cingulate cortex participate in the comorbidity of pain and emotion

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Neural Regeneration Research 2025年第10期20卷 2838-2854页

作者： Lu Guan Mengting qiu Na li Zhengxiang Zhou Ru Ye liyan Zhong Yashuang Xu Junhui Ren yi liang Xiaomei Shao Jianqiao Fang Junfan Fang Junying Du Department of Neurobiology and Acupuncture Research Third School of Clinical MedicineZhejiang Chinese Medical UniversityHangzhouZhejiang ProvinceChina Key Laboratory for Research of Acupuncture Treatment and Transformation of Emotional Diseases Third School of Clinical MedicineZhejiang Chinese Medical UniversityHangzhouZhejiang ProvinceChina Fuchun Community Health Service Center of Fuyang District HangzhouZhejiang ProvinceChina

Pain is often comorbid with emotional disorders such as anxiety and *** of the anterior cingulate cortex has been implicated in pain and pain-related negative emotions that arise from impairments in inhibitory gamma-aminobutyric acid *** review primarily aims to outline the main circuitry(including the input and output connectivity)of the anterior cingulate cortex and classification and functions of different gamma-aminobutyric acidergic neurons;it also describes the neurotransmitters/neuromodulators affecting these neurons,their intercommunication with other neurons,and their importance in mental comorbidities associated with chronic pain *** understanding on their role in pain-related mental comorbidities may facilitate the development of more effective treatments for these ***,the mechanisms that regulate gamma-aminobutyric acidergic systems remain *** is also unclear as to whether the mechanisms are presynaptic or *** exploration of the complexities of this system may reveal new pathways for research and drug development.

关键词： anterior cingulate cortex anxiety chronic pain circuit communication comorbidity depression gamma-aminobutyric acidergic neurons parvalbumin neurons synaptic transmission

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Unlocking the stable interface in aqueous zinc-ion battery with multifunctional xylose-based electrolyte additives

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Journal of Energy Chemistry 2025年第1期100卷 770-778页

作者： Xiaoqin li Jian Xiang Lu qiu Xiaohan Chen yinkun Zhao Yujue Wang Qu Yue Taotao Gao Wenlong liu Dan Xiao Zhaoyu Jin Panpan li Institute for Advanced Study Chengdu University School of Mechanical Engineering Chengdu University College of Food and Biological Engineering Chengdu University Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China College of Materials Science and Engineering Sichuan University

The growth of dendrites and the side reactions occurring at the Zn anode pose significant challenges to the commercialization of aqueous Zn-ion batteries（AZIBs）. These challenges arise from the inherent conflict between mass transfer and electrochemical kinetics. In this study, we propose the use of a multifunctional electrolyte additive based on the xylose（Xylo） molecule to address these issues by modulating the solvation structure and electrode/electrolyte interface, thereby stabilizing the Zn anode. The introduction of the additive alters the solvation structure, creating steric hindrance that impedes charge transfer and then reduces electrochemical kinetics. Furthermore, in-situ analyses demonstrate that the reconstructed electrode/electrolyte interface facilitates stable and rapid Zn2+ion migration and suppresses corrosion and hydrogen evolution reactions. As a result, symmetric cells incorporating the Xylo additive exhibit significantly enhanced reversibility during the Zn plating/stripping process, with an impressively long lifespan of up to 1986 h, compared to cells using pure ZnSO4electrolyte. When combined with a polyaniline cathode, the full cells demonstrate improved capacity and long-term cyclic stability. This work offers an effective direction for improving the stability of Zn anode via electrolyte design, as well as highperformance AZIBs.

关键词： Solvation

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