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Cell-nucleus structured electrolyte for low-temperature aqueous zinc batteries

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Journal of Energy Chemistry 2023年第8期83卷 324-332,I0010页

作者： Yang Dong Ning Zhang Zhaodong Wang Jinhan Li Youxuan Ni honglu hu Fangyi Cheng Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Engineering Research Center of High-efficiency Energy Storage(Ministry of Education)College of ChemistryNankai UniversityTianjin 300071China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China College of Chemistry and Materials Science Analytical Science and Technology of Hebei ProvinceHebei UniversityBaoding 071002HebeiChina

Rechargeable aqueous zinc(Zn) batteries hold great promise for large-scale energy storage,but their implementation is plagued by poor Zn reversibility and unsatisfactory low-temperature ***,we design a cell-nucleus structured electrolyte by introducing low-polarity 1,2-dimethoxyethane(DME) into dilute 1 M zinc trifluoromethanesulfonate(Zn(OTf)_(2)) aqueous solution,which features an OTf--rich Zn2^(+)-primary solvation sheath(PSS,inner nucleus) and the DMEmodulated Zn^(2+)-outer solvation sheath(outer layer).We find that DME additives with a low dosage do not participate in the Zn2+-PSS but reinforce the Zn-OTf-coordination,which guarantees good reaction kinetics under ultralow ***,DME breaks the original H-bonding network of H2O,depressing the freezing point of electrolyte to-52.4℃.Such a cell-nucleus-solvation structure suppresses the H_(2)O-induced side reactions and forms an anion-derived solid electrolyte interphase on Zn and can be readily extended to 1,*** as-designed electrolyte enables the Zn electrode deep cycling stability over 3500 h with a high depth-of-discharge of 51.3% and endows the Zn‖V_(2)O_(5)full battery with stable cycling over 1000 cycles at 40℃.This work would inspire the solvation structure design for low-temperature aqueous batteries.

关键词： Aqueous zinc batteries Low temperature Cell-nucleus solvation structure Zn metal anode Solid electrolyte interphase

Anionic formulation of electrolyte additive towards stable electrocatalytic oxygen evolution in seawater splitting

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Journal of Energy Chemistry 2022年第9期31卷 361-369,I0010页

作者： Meng Yu Jinhan Li Fangming Liu Jiuding Liu Wence Xu honglu hu Xijie Chen Weichao Wang Fangyi Cheng Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Engineering Research Center on High-Efficiency Energy Storage(Ministry of Education)Renewable Energy Conversion and Storage CenterCollege of ChemistryNankai UniversityTianjin 300071China Integrated Circuits and Smart System Lab.(Shenzhen) Renewable Energy Conversion and Storage CenterTianjin Key Laboratory of Photo-Electronic Thin Film Device and TechnologyCollege of Electronic Information and Optical EngineeringNankai UniversityTianjin 300071China

Hydrogen generation through seawater electrolysis provides a promising,attractive pathway towards the utilization of sustainable ***,the catalytic activity and stability of oxygen evolution anode are severely limited by the chloride-induced corrosion and competitive oxidation *** this work,we demonstrate an anion-assisted performance improvement strategy by quick and universal screening of electrolyte additive via correlating Cl-repellency with the anionic ***,the addition of phosphate ions is found to enable highly stable alkaline seawater splitting at industry-level current density(0.5 A cm^(-2))over 500 h using transition metal hydroxides as anodic *** situ experiments and theoretical simulations further reveal that the dynamic anti-corrosion behaviors of surface-adsorbed phosphate ions are attributed to three factors including repelling Cl-ions without significantly blocking OH-diffusion,preventing transition metal dissolution and acting as a local pH buffer to compensate the fast OH-consumption under high current electrolysis.

关键词： Alkaline seawater splitting Oxygen evolution reaction Stability enhancement Chloride corrosion Phosphate

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非球面垂直磨削法的砂轮误差分析与实验研究

金刚石与磨料磨具工程 2017年第5期37卷 24-29,40页

作者：陈冰胡红禄钟一星李时春邓朝晖赵清亮湖南科技大学智能制造研究院难加工材料高效精密加工湖南省重点实验室湖南湘潭411201 湖南科技大学机电工程学院湖南湘潭411201 哈尔滨工业大学机电工程学院哈尔滨150001

针对垂直磨削法中砂轮误差对超精密磨削非球面加工质量的影响,通过对多种砂轮误差的逐一理论分析,阐述了各种砂轮误差对非球面磨削加工质量的影响状况,并对部分砂轮误差进行校正和补偿,以提高磨削加工质量。最后,通过非球面磨削加工实... 详细信息

针对垂直磨削法中砂轮误差对超精密磨削非球面加工质量的影响,通过对多种砂轮误差的逐一理论分析,阐述了各种砂轮误差对非球面磨削加工质量的影响状况,并对部分砂轮误差进行校正和补偿,以提高磨削加工质量。最后,通过非球面磨削加工实验验证了砂轮误差补偿的正确性。该研究为非球面超精密磨削加工中砂轮误差的补偿提供技术参考。

关键词：砂轮误差超精密磨削非球面磨削加工质量校正和补偿

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多层酸化工艺研究及应用

石油钻采工艺 2004年第3期26卷 49-51页

作者：石步乾李家明张宏禄童琥吴荷香孙尚勇河南油田公司石油工程技术研究院河南南阳473132 华北石油管理局井下作业公司河北任丘062552

酸化是油井增产、水井增注的主要措施之一 ,现有的酸化工艺存在耐压耐温低、分层酸化层段少、不易反洗井等问题。通过对酸化封隔器结构、胶筒密封件结构、胶筒胶料的配方和多层开关的研究 ,使该酸化工艺基本满足了中、低渗透层酸化压力... 详细信息

酸化是油井增产、水井增注的主要措施之一 ,现有的酸化工艺存在耐压耐温低、分层酸化层段少、不易反洗井等问题。通过对酸化封隔器结构、胶筒密封件结构、胶筒胶料的配方和多层开关的研究 ,使该酸化工艺基本满足了中、低渗透层酸化压力高、酸化层段多的需要 ,现场施工最高压力达 4 0MPa ,酸化层段达 3层 ,施工后能够顺利反洗井 ,提高东部老区中、低渗透层段的开发效果。

关键词：多层酸化工艺酸化封隔器油田开发注水井

Well-balanced numerical modelling of non-uniform sediment transport in alluvial rivers

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International Journal of Sediment Research 2015年第2期30卷 117-130页

作者： honglu Qian Zhixian Cao Gareth Pender huaihan Liu Peng hu State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Institute for Infrastructure and Environment Heriot-Watt University Yangtze River Waterway Bureau School of Ocean Science and Engineering Zhejiang University

The last two decades have witnessed the development and application of well-balanced numerical models for shallow flows in natural ***,until now there have been no such models for flows with non-uniform sediment *** paper presents a 1D well-balanced model to simulate flows and non-capacity transport of non-uniform sediment in alluvial *** active layer formulation is adopted to resolve the change of bed sediment *** the framework of the finite volume Slope Llmiter Centred(SLIC) scheme,a surface gradient method is incorporated to attain well-balanced solutions to the governing *** proposed model is tested against typical cases with irregular topography,including the refilling of dredged trenches,aggradation due to sediment overloading and flood flow due to landslide dam *** agreement between the computed results and measured data is *** to a non-well-balanced model,the well-balanced model features improved performance in reproducing stage,velocity and bed *** should find general applications for non-uniform sediment transport modelling in alluvial rivers,especially in mountain areas where the bed topography is mostly irregular.

关键词： Non-uniform:sediment transport Well-balanced scheme Irregular topography Shallow flow Mathematical river modelling

Enhanced bed load sediment transport by unsteady flows in a degrading channel

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International Journal of Sediment Research 2018年第3期33卷 327-339页

作者： Zhijing Li honglu Qian Zhixian Cao huaihan Liu Gareth Pender Penghui hu State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Changjiang River Scientific Research Institute Yangtze River Waterway Bureau School of Energy Geoscience Infrastructure and Society Heriot-Watt University

Laboratory flume experiments were done to investigate bed load sediment transport by both steady and unsteady flows in a degrading channel. The bed, respectively composed of uniform sand, uniform gravel,or sand-gravel mixtures, always undergoes bulk degradation. It is found that both uniform and nonuniform bed load transport is enhanced greatly by unsteady flows as compared to their volumeequivalent steady flows. This enhancement effect is evaluated by means of an enhancement factor, which is shown to be larger with a coarser bed and lower discharges. Also, the fractional transport rates of gravel and sand in non-uniform sand-gravel mixtures are compared with their uniform counterparts under both steady and unsteady flows. The sand is found to be able to greatly promote the transport of gravel, whilst the gravel considerably hinders the transport of sand. Particularly, the promoting and hindering impacts are more pronounced at lower discharges and tend to be weakened by flow unsteadiness.

关键词： Bed load Gravel Sand Unsteady flow Enhancement effect

Transcriptional pausing induced by ionizing radiation enables the acquisition of radioresistance in nasopharyngeal carcinoma

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Journal of Molecular Cell Biology 2023年第7期15卷 15-30页

作者： honglu Liu huanyi Fu Chunhong Yu Na Zhang Canhua huang Lu Lv Chunhong hu Fang Chen Zhiqiang Xiao Zhuohua Zhang huasong Lu Kai Yuan hunan Key Laboratory of Molecular Precision Medicine Department of OncologyXiangya HospitalCentral South UniversityChangsha 410008China Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology Life Sciences InstituteZhejiang UniversityHangzhou 310058China hunan Key Laboratory of Medical Genetics School of Life SciencesCentral South UniversityChangsha 410008China Department of Oncology The Second Xiangya HospitalCentral South UniversityChangsha 410011China Research Center of Carcinogenesis and Targeted Therapy Xiangya HospitalCentral South UniversityChangsha 410008China National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangsha 410008China The Biobank of Xiangya Hospital Central South UniversityChangsha 410008China

Lesions on the DNA template can impact transcription via distinct regulatory *** radiation(IR)as the mainstay modality for many malignancies elicits most of the cytotoxicity by inducing a variety of DNA damages in the *** the IR treatment alters the transcription cycle and whether it contributes to the development of radioresistance remain poorly ***,we report an increase in the paused RNA polymerase II(RNAPII),as indicated by the phosphorylation at serine 5 residue of its C-terminal domain,in recurrent nasopharyngeal carcinoma(NPC)patient samples after IR treatment and cultured NPC cells developing IR *** the pool of paused RNAPII by either inhibiting TFIIH-associated CDK7 or stimulating the positive transcription elongation factor b,a CDK9-CycT1 heterodimer,attenuates IR resistance of NPC ***,the poly(ADP-ribosyl)ation of CycT1,which disrupts its phase separation,is elevated in the IR-resistant *** of the major poly(ADP-ribosyl)ation sites of CycT1 decreases RNAPII pausing and restores IR ***-wide chromatin immunoprecipitation followed by sequencing analyses reveal that several genes involved in radiation response and cell cycle control are subject to the regulation imposed by the paused ***,we identify the NIMA-related kinase NEK7 under such regulation as a new radioresistancefactor,whose downregulation results in the increased chromosome instability,enabling the development of IR ***,our results highlight a novel link between the alteration in the transcription cycle and the acquisition of IR resistance,opening up new opportunities to increase the efficacy of radiotherapy and thwart radioresistance in NpC.

关键词： RNA polymerase II transcriptional pausing radioresistance CDK7 NEK7 nasopharyngeal carcinoma

模拟酸雨对泉州市大气降尘重金属浸出特性的研究

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工业安全与环保 2010年第5期36卷 21-23页

作者：戚红璐胡恭任李祯华侨大学环境科学与工程系福建厦门361021

针对福建泉州地区受污染的大气降尘样品,采用模拟酸雨浸泡的试验方法,研究不同酸度模拟酸雨(pH分别为2.5,3.5,4.5和5.6)对大气降尘样品中重金属元素浸出性质的影响。研究结果表明,Cu、Pb、Ni、Zn、Mn、Cr、V、Co、Cd均有不同程度的浸出... 详细信息

针对福建泉州地区受污染的大气降尘样品,采用模拟酸雨浸泡的试验方法,研究不同酸度模拟酸雨(pH分别为2.5,3.5,4.5和5.6)对大气降尘样品中重金属元素浸出性质的影响。研究结果表明,Cu、Pb、Ni、Zn、Mn、Cr、V、Co、Cd均有不同程度的浸出,随着模拟酸雨pH值的升高重金属浸出率逐渐减小,pH在2.5到3.5范围内浸出率变化最大,Cd、Cu、Pb、Zn、Cr的释放量明显高于其他元素。pH是影响9种重金属元素浸出率大小的主要影响因素,降尘样品本身的酸碱度对其浸出率也有一定的影响。通过实验也让人们了解了大气降尘中重金属的潜在危害。

关键词：模拟酸雨大气降尘重金属浸出率

大空孔复式筒形直眼掏槽力学机制与数值模拟分析

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中国安全生产科学技术 2018年第9期14卷 129-135页

作者：胡刚费鸿禄国志雨辽宁工程技术大学爆破技术研究院辽宁阜新123000 中国能源建设集团黑龙江省电力设计院有限公司黑龙江哈尔滨150078

为了解决矿山硬岩巷道爆破开挖存在炸药单耗高、炮眼利用率低和掘进深度短等问题,应用理论分析、数值模拟与现场实践相结合的方法,提出大空孔复式筒形直眼掏槽方式。根据静力学理论,简化掏槽区域岩体只受爆生气体的准静态膨胀作用,并在... 详细信息

为了解决矿山硬岩巷道爆破开挖存在炸药单耗高、炮眼利用率低和掘进深度短等问题,应用理论分析、数值模拟与现场实践相结合的方法,提出大空孔复式筒形直眼掏槽方式。根据静力学理论,简化掏槽区域岩体只受爆生气体的准静态膨胀作用,并在复式筒形直眼掏槽腔体成形力学机制的基础上,分析大空孔形式下空腔形成的物理力学过程;采用LS-DYNA软件建立数值模型,基于材料参数和状态方程,仿真分析大空孔复式筒形直眼掏槽槽腔有效应力的传播机理;依据巷道尺寸及爆破参数,进行大空孔复式筒形掏槽掘进现场试验。试验结果表明:炮眼利用率提高到89.0%,掘进深度达到2.8 m,炸药单耗降低到3.16kg/m^3,充分证明大空孔复式筒形直眼掏槽方式的可行性。

关键词：直眼掏槽复式筒形大空孔力学机制数值模拟