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Sorbitol-Electrolyte-Additive Based Reversible Zinc Electrochemistry

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电化学（中英文） 2024年第7期30卷 28-37页

作者： Qiong Sun Hai-Hui Du tian-Jjiang Sun Dian-Tao Li Min Cheng Jing Liang Hai-xia Li Zhan-Liang Tao Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Renewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin300071China Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China School of Chemistry and Life SciencesSuzhou University of Science and TechnologySuzhou 215009JiangsuChina

The unstable zinc(Zn)/electrolyte interfaces formed by undesired dendrites and parasitic side reactions greatly hinder the development of aqueous zinc ion ***,the hydroxy-rich sorbitol was used as an additive to reshape the solvation structure and modulate the interface *** strong interactions among sorbitol and both water molecules and Zn electrode can reduce the free water activity,optimize the solvation shell of water and Zn^(2+)ions,and regulate the formation of local water(H_(2)O)-poor environment on the surface of Zn electrode,which effectively inhibit the decomposition of water molecules,and thus,achieve the thermodynamically stable and highly reversible Zn *** a result,the assembled Zn/Zn symmetric cells with the sorbitol additive realized an excellent cycling life of 2000 h at 1 mA·cm^(-2)and 1 mAh·cm^(-2),and over 250 h at 5 ***^(-2)and 5 ***^(-2).Moreover,the Zn/Cu asymmetric cells with the sorbitol additive achieved a high Coulombic efficiency of 99.6%,obtaining a better performance than that with a pure 2 mol-L^(-1)ZnSO_(4)*** the constructed Zn/poly1,5-naphthalenediamine(PNDA)batteries could be stably discharged for 2300 cycles at 1 A g^(-1)with an excellent capacity retention *** result indicates that the addition of 1 mol-L^(-1)non-toxic sorbitol into a conventional ZnSO_(4)electrolyte can successfully protect the Zn anode interface by improving the electrochemical properties of Zn reversible deposition/decomposition,which greatly promotes its cycle performance,providing a new approach in future development of high performance aqueous Zn ion batteries.

关键词： Aqueous zinc ion batteries Dendrite Sorbitol additive Solvation regulation Interface modulation

A Z/E isomeric cation designed organic-inorganic cadmium chloride ferroelectric with broadband white-light emission

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Science China Chemistry 2024年

作者： Jun-Chao Qi Yan Qin Hang Peng Hui-Peng Lv Yong-Ju Bai Xin Shen Zhang-tian xia Wei-Qiang Liao Ordered Matter Science Research Center Nanchang University

Hybrid organic-inorganic metal halides（HOMHs） have attracted tremendous interest in the past decades due to their diverse functional properties, such as ferroelectricity and luminescence. However, although a large number of ferroelectric HOMHs and luminescent HOMHs have been reported, the HOMH ferroelectrics with white-light emission remain very sparse. Here, for the first time, by using the Z/E isomeric organic cation, we designed a cadmium-based HOMH ferroelectric [EE-PMU]CdCl4（EEPMU = pyridin-2-ylmethanamide muconate） with broadband white-light emission. In contrast to the [ZZ-PMU]CdCl4with centrosymmetric crystal structure at room temperature, [EE-PMU]CdCl4adopts the polar crystal symmetry, which shows piezoelectricity with a piezoelectric coefficient of d33up to 19 pC/N and ferroelectricity with the saturated polarization of 1.52μC/cm2. Moreover, [EE-PMU]CdCl4exhibits a broadband white-light emission with an ultra-high color rendering index of 91 under UV excitation, which is related to the severely distorted [CdCl4]2-tetrahedron in the structure. To our knowledge, [EEPMU]CdCl4is the first example of Z/E isomeric cation-designed HOMH ferroelectric and the first cadmium halide white-light emissive ferroelectric. This finding paves a new way for the design of organic-inorganic molecular ferroelectrics with white-light emission.

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基于谐波状态空间的高压直流输电系统SISO阻抗建模及稳定性分析

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中国电机工程学报 2024年第5期44卷 1985-1998,I0027页

作者：王杨夏菲田旭肖先勇徐群伟马智泉四川大学电气工程学院四川省成都市610065 国网浙江省电力有限公司电力科学研究院浙江省杭州市310014

近年来,电网换相换流器型高压直流输电(line commutated converter based on high voltage direct current,LCC-HVDC)系统的稳定性问题得到广泛关注,多位专家学者建议采用谐波状态空间(harmonic state space,HSS)等线性周期时变建模方... 详细信息

近年来,电网换相换流器型高压直流输电(line commutated converter based on high voltage direct current,LCC-HVDC)系统的稳定性问题得到广泛关注,多位专家学者建议采用谐波状态空间(harmonic state space,HSS)等线性周期时变建模方法对其分析。然而,HSS不可避免地提高了建模的复杂度与维数,在面对大规模交直流系统时具有局限性。同时,LCC-HVDC包含多类型谐波耦合,各部分耦合对稳定性的影响大小尚未得到充分论证。为此,文中以HSS为底层理论建立LCC-HVDC的耦合阻抗矩阵,揭示高压直流输电系统内部的谐波耦合机理。进一步,通过多频电路等效思想,提出三相系统多维阻抗的降维方法,将耦合阻抗矩阵无损降维成单入单出阻抗,以此分析不同次数的谐波耦合对阻抗特性与稳定性的影响。结果表明,考虑到13次谐波截断可以有效提升高压直流输电系统阻抗模型精度,但对稳定性分析结果的影响小于忽略工况变化、简化逆变侧带来的误差。

关键词：电网换相换流器型高压直流输电谐波状态空间谐波耦合单入单出阻抗稳定性分析

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ZnSe及其Mn掺杂复合材料光吸收催化性能和高压结构性能研究

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光谱学与光谱分析 2024年第2期44卷 380-385页

作者：王世霞王晓雨胡天意上海理工大学材料与化学学院上海200093

ZnSe半导体材料是制备光电器件和光催化反应催化剂的重要原材料。其单体材料具有强光下易变质、电子-空穴复合等现象。通过元素掺杂制备ZnSe复合材料,并与单体材料对比研究了元素掺杂所提升的ZnSe的光学及结构性能。首先采用水热法实验... 详细信息

ZnSe半导体材料是制备光电器件和光催化反应催化剂的重要原材料。其单体材料具有强光下易变质、电子-空穴复合等现象。通过元素掺杂制备ZnSe复合材料,并与单体材料对比研究了元素掺杂所提升的ZnSe的光学及结构性能。首先采用水热法实验室制备纯ZnSe和Mn∶Zn加入比分别为5%、10%、15%和20%的ZnSe复合材料,对比材料形貌、结构,光吸收和催化性能,结果显示掺杂比为10%的样品结晶度最高,杂质成型量最少,催化性能最佳。采用Mao-Bell型金刚石压腔结合原位拉曼光谱探究纯ZnSe和掺杂比为10%的样品的高压结构相变行为,以探究元素掺杂对样品结构性能的影响。研究结果:(1)扫描电子显微镜(SEM)图显示,加入Mn元素后制得的ZnSe样品形貌为球状,与纯样大致相同,球状颗粒表面有小颗粒负载,且随着Mn加入量的增加,表面负载的物质增多;(2)X射线衍射(XRD)图谱表明,ZnSe样品结构为立方闪锌矿结构,随着Mn加入量的增加,样品MnSe特征峰增强,杂质MnO_(2)成型越完全。掺杂比为10%的样品ZnSe结晶度高,杂质成型量少;(3)固体紫外漫反射(UV-Vis)结果表明,掺杂比为10%的样品对光的吸收边最大,禁带宽度最小,为1.65 eV;(4)光催化实验结果显示,掺杂比为10%的样品催化降解甲基橙的效率最大,6 h降解85.4%。研究表明掺杂Mn元素比为10%的ZnSe复合材料,光吸收和催化性能相对最好。金刚石压腔结合原位拉曼光谱探究ZnSe样品和掺杂比为10%的样品的高压相变结果表明,(1)纯ZnSe的LO声子模在压力上升到12.3 GPa时基本消失,TO声子模在压力上升到20.8 GPa时消失,整个加压过程中没有新峰生成,纯ZnSe发生闪锌矿相向岩盐矿相转变的高压行为;(2)复合材料的TO声子模在6.9 GPa时发生劈裂,在8.0 GPa时208 cm^(-1)处有新峰出现,表明在此压力下部分样品由闪锌矿相转变为辰砂矿相。在10.8 GPa时辰砂矿相的峰消失,体系发生由辰砂矿相向岩盐矿相转变;加压至18.8 GPa,LO声子模非常微弱,几近消失,此时体系中的闪锌矿相完全转化为岩盐矿相。研究了不同条件下ZnSe的光催化性能和相变行为,探究了不同掺杂比对ZnSe光催化性能的影响,确定掺杂比为10%的ZnSe样品为最佳掺杂比复合材料,丰富了极端条件下ZnSe的物理化学性质的多样性研究。

关键词： ZnSe Mn掺杂光吸收性能光催化性能高压相变

The protective effects of fermented vinegar on acute alcohol-induced hepatic and neuro-toxicity by regulating ethanol metabolism and gut microbiota

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Food Science and Human Wellness 2024年

作者： Yuan Meng Yunfan Liu Ting xia Beibei Geng Yinglei tian Hailong Cao Jin Yan xiaoqi Pang Kai Liang Yufeng Yan Min Wang State Key Laboratory of Food Nutrition and Safety， Key Laboratory of Industrial Fermentation Microbiology， College of Biotechnology， tianjin University of Science and Technology Department of Gastroenterology and Hepatology， General Hospital， tianjin Medical University， National Key Clinical Specialty， tianjin Institute of Digestive Diseases， tianjin Key Laboratory of Digestive Diseases Shanxi Provincial Key Laboratory for Vinegar Fermentation Science and Engineering， Shanxi Zilin Vinegar Industry Co.， Ltd.

Alcohol abuse constitutes a significant health hazard， leading to various organ damage， notably the liver and brain. Shanxi aged vinegar (SAV) is one of the famous fermented and functional foods containing a variety of bioactive ingredients with beneficial effects on the human body. This study aimed to explore the potential protective effect of SAV in alleviating acute alcohol intoxication (AAI) in mice. It was found that SAV at 2.5 mg/kg BW effectively ameliorated the decline in behavioral abilities following alcohol consumption， characterized by a shortened sobering period. SAV reduces alcohol-induced liver damage by inhibiting hepatic function enzymes and oxidative stress levels. Additionally， SAV mitigated the overactivation of microglia and the downregulation of neurotransmitter levels (AchE， 5-HT， and DA)， thereby reducing ethanol-induced brain damage. Meanwhile， SAV significantly decreased concentrations of alcohol and acetaldehyde in the blood and increased ADH and ALDH activities in the liver， indicating enhancement of ethanol metabolism. Moreover， we found that some gut microbiota including Verrucomicrobiota， Akkermansia， and Enterococcus were downregulated after SAV treatment in mice with AAI. These bacteria showed a negative correlation with anti-oxidative markers (GSH and CAT) and enzymes related to ethanol metabolism pathways (ADH and ALDH)， and a positive correlation with hepatic function markers (ALT， AST， and MDA)， alcohol metabolites (alcohol and acetaldehyde) and neurotransmitters (AchE， 5-HT， and DA). However， Bacteroidota， norank＿f＿Muribaculaceae， and Alistipes exhibited the opposite direction. These findings suggest that SAV possesses protective effects against hepatic and neuro-toxicity， and could be a potential functional food for AAI prevention.

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定向财政激励助力形成新质生产力——基于探索性案例的组态研究

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技术经济与管理研究 2024年第7期 7-13页

作者：夏天添王慧江西科技学院江西南昌330098 云南师范大学云南昆明650500 菲律宾中央大学菲律宾伊洛伊洛5000

基于中国式现代化理论,通过探索性案例的组态研究范式,对我国战略性新兴产业链主企业展开研究,检视了定向财政激励助力形成新质生产力的影响机制。结果显示:当前,相较于“雨露均沾”式的传统财政激励,“扶优扶强”式的定向财政激励更能... 详细信息

基于中国式现代化理论,通过探索性案例的组态研究范式,对我国战略性新兴产业链主企业展开研究,检视了定向财政激励助力形成新质生产力的影响机制。结果显示:当前,相较于“雨露均沾”式的传统财政激励,“扶优扶强”式的定向财政激励更能够发挥政策边际溢出效应;同时,定向财政激励可通过强化现金流韧性,引导链主企业采用供应链金融等权益性投资,促进供应链资本溢出,并通过对链内优质资产并购重组,实现供应链高端整合,从而为形成战略性新兴产业新质生产力奠定基础。据此建议进一步深化定向财政激励内涵,强化政策激励力度,加快构建战略性新兴产业新质生产力。

关键词：定向财政激励新质生产力供应链“溢出—重组” 链主企业

高含沙水滴灌灌水器堵塞机制及防堵技术研究进展

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节水灌溉 2024年第4期 51-57页

作者：夏天田军仓李小纲宁夏大学土木与水利工程学院银川750021

为解决黄河水中粒径小于0.10 mm细小泥沙颗粒引发的滴灌灌水器堵塞问题。通过文献调研,回顾了高含沙水滴灌条件下灌水器物理堵塞机制相关研究进展,并提出了进一步研究方向。细小泥沙颗粒含量较高的浑水滴灌时,滴头堵塞主要是含沙量、泥... 详细信息

为解决黄河水中粒径小于0.10 mm细小泥沙颗粒引发的滴灌灌水器堵塞问题。通过文献调研,回顾了高含沙水滴灌条件下灌水器物理堵塞机制相关研究进展,并提出了进一步研究方向。细小泥沙颗粒含量较高的浑水滴灌时,滴头堵塞主要是含沙量、泥沙粒径与颗粒级配耦合作用的结果。滴灌系统工作条件如工作压力的动态变化有助于移除流道内黏、粉等细颗粒堵塞物质,促进较大泥沙颗粒排出流道;灌溉水温越高,滴头抗物理堵塞性能越强;对浑水加气和磁化处理可改变毛管内水流水力特性及悬浮泥沙运动规律,增强水流拖拽力,减小管道内泥沙淤积量。此外,施肥增强了水体中泥沙颗粒间的絮凝作用,对浑水水肥一体化滴灌滴头堵塞具有明显加速作用。浑水含沙量、粒径和颗粒级配是引发滴头物理堵塞的重要因素,确定易引发滴头堵塞的敏感含沙量、颗粒粒径段,选用适宜肥料种类和施肥浓度阈值,优化滴灌系统工作条件参数是改变毛管内泥沙颗粒运移和沉积规律、延缓滴头堵塞进程、提高水肥一体化滴灌水肥利用效率的有力措施;采用统一的灌水试验方法,充分利用现代测试手段,结合生产实际有针对性地改进工程技术处理措施是解决滴头堵塞问题的必要途径。

关键词：滴灌灌水器滴头堵塞高含沙水过滤抗堵技术进展

Erratum to “Lipidome Atlas of the Developing Heart Uncovers Dynamic Membrane Lipid Attributes Underlying Cardiac Structural and Metabolic Maturation”

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Research 2024年第1期6卷 825-826页

作者： Huan Miao Bowen Li Zehua Wang Jinming Mu Yanlin tian Binhua Jiang Shaohua Zhang xia Gong Guanghou Shui Sin Man Lam State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China LipidALL Technologies Company Limited Changzhou 213022Jiangsu ProvinceChina

Main Text In the Research Article“Lipidome Atlas of the Developing Heart Uncovers Dynamic Membrane Lipid Attributes Underlying Cardiac Structural and Metabolic Maturation”[1],there was an error in *** authors mistakenly repeated the chord diagram designated for P7 with that from *** figure amendment did not affect the in-text discussion of the figure,which was focused on changes between P0 and P21,and did not alter the *** 2B has now been corrected in the PDF and HTML(full text).

关键词： Atlas Dynamic HTML

Controllable optical bistability in a Fabry-Pérot cavity with a nonlinear three-dimensional Dirac semimetal

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Chinese Physics B 2024年第3期33卷 441-446页

作者：袁红霞李佳雪马奇军田海山叶云洋罗文昕吴杏华蒋乐勇 School of Physics and Electronics Hunan Normal UniversityChangsha 410081China School of Intelligent Manufacturing and Electronic Engineering Wenzhou University of TechnologyWenzhou 325035China Key Laboratory for Microstructural Functional Materials of Jiangxi Province College of ScienceJiujiang UniversityJiujiang 332005China

Optical bistability(OB)is capable of rapidly and reversibly transforming a parameter of an optical signal from one state to another,and homologous nonlinear optical bistable devices are core components of high-speed all-optical communication and all-optical *** this paper,we theoretically investigated the controllable OB from a Fabry-Pérot(FP)cavity with a nonlinear three-dimensional Dirac semimetal(3D DSM)in the terahertz *** OB stems from the third-order nonlinear bulk conductivity of the 3D DSM and the resonance mode has a positive effect on the generation of *** FP cavity structure is able to tune the OB because the transmittance and the reflectance can be modulated by the Fermi energy of the 3D *** believe that this FP cavity configuration could provide a reference concept for realizing tunable bistable devices.

关键词： optical bistability Dirac semimetal Fabry-Pérot cavity