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Constructing a 3D multichannel structure to enhance performance of Ni–Co–Mn hydroxide electrodes for flexible supercapacitors

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Rare Metals 2024年第1期43卷 148-163页

作者： Zhi-Hui Xu Shi-Shuai Sun Xue-Lei li.Zhi-Hui Zhang hai-Ying li.Shuang-Ting Ruan Shou-Gen Yin Key Laboratory of Display Materials and Photoelectric Devices(Ministry of Education)and Tianjin Key Laboratory for Photoelectric Materials and Devices School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China College of Science Tianjin University of TechnologyTianjin 300384China School of Materials Science and Engineering Inner Mongolia University of TechnologyHohhot 010051China

The balancing of the electrochemical performance,mechanical stabili.y,and processing technology for applying supercapacitors to flexible and wearable electronics continues to encounter severe ***,we prepare Ni-Co-Mn hydroxide electrodes with a threedimensional multichannel structure via a simple hydrothermal *** are constructed using vertically contiguous nano sheets with a uniform thickness and rough *** electrodes can provide numerous electroactive sites and accelerate the transmission of electrolyte *** relationship between the structure and electrochemical performances is verified by experiments and theoretical ***-dimensional(2D)planar and one-dimensional(1D)fiber electrodes are prepared using a flexible carbon cloth(CC)and carbon fiber(CF),respectively,as *** assembled quasi-soli.-state flexible asymmetric supercapacitor(FASC)with a twodimensional sandwich structure using NiCoMn-OH/CC as the electrode achieves a remarkable energy density of73.8 Wh·kg^(-1)at a power density of 1.03 kW·kg^(-1).The quasi-soli.-state FASC with a 1D li.ear structure using NiCoMn-OH/CF as the electrode also attains a high energy density(12.9 Wh·kg^(-1)at a power density of0.75 W·kg^(-1)).Moreover,the electrochemical performances of the NiCoMn/CC//AC/CC and NiCoMn/CF//AC/CF FASCs are not disturbed at different bending angles(0°,45°,90°,135°and 180°),This indicates the superior flexibili.y of the *** also assemble a self-powered energy-harvesting storage system by integrating FASCs and commercial solar cells to verify its *** displays sustainable development potential for energy storage.

关键词： Supercapacitors Flexible Ni–Co–Mn hydroxide 3D multichannel structure High performances

A systematic review of the inequali.y of health burdens related to cli.ate change

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Frontiers of Environmental Science & Engineering 2024年第5期18卷 137-153页

作者： Xinke Song Shihui Zhang hai Huang Qun Ding Fang Guo Yaxin Zhang Jin li.Mingyu li.Wenjia Cai Can Wang State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Department of Earth System Science Tsinghua UniversityBeijing100084China

Cli.ate change significantly impacts human health,exacerbating existing health inequali.ies and creating new *** study addresses the lack of systematic review in this area by analyzing 2440 publi.ations,focusing on four key terms:health,disparities,environmental factors,and cli.ate *** inclusion criteria li.ited the selection to Engli.h-language,peer-reviewed articles related to cli.ate health hazards,ensuring the relevance and rigor of the synthesized *** process synthesized 65 relevant *** investigation revealed that recent research,predominantly from developed countries,has broadened its scope beyond temperature-related impacts to encompass diverse cli.ate hazards,including droughts,extreme weather,floods,mental health issues,and the intersecting effects of Coronavirus Disease *** has highli.hted exposure as the most studied element in the causal chain of cli.ate change-related health inequali.ies,followed by adaptive capabili.y and inherent *** most significant vulnerabili.ies were observed among populations with low socioeconomic status,ethnic minorities,and *** study further reveals research biases and methodological li.itations,such as the paucity of attention to underdeveloped regions,a narrow focus on non-temperature-related hazards,challenges in attributing cli.ate change effects,and a deficit of large-scale empirical *** findings call for more innovative research approaches and a holi.tic integration of physical,socio-poli.ical,and economic dimensions to enrich cli.ate-health discourse and inform equitable poli.y-making.

关键词： Cli.ate change Health impact Human well-being Inequali.y Vulnerabili.y

(+)/(-)-Gerbeloid A,a pair of unprecedented coumarin-based polycycli. meroterpenoid enantiomers from Gerbera piloselloides:Structural elucidation,semi-synthesis,and li.id-lowering activity

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Acta Pharmaceutica Sinica B 2024年第6期14卷 2657-2668页

作者： Chenxu Zhao Jingrong li.Yue Hu li.gyu li.Meng Yu Yunfeng Huang Tao Zhang hai Shang Zhongmei Zou State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100193China Institute of Chinese Medicine Resources Guangxi Institute of Chinese Medicine&Pharmaceutical ScienceNanning 530000China

A pair of coumarin-based polycycli. meroterpenoid enantiomers(+)/(-)-gerbeloid A[(+)-1a and(-)-1b]were isolated from the medicinal plant Gerbera piloselloides,which have a unique caged oxatricyclo[4.***.2.0^(3,8)]decene *** planar and three-dimensional structures were exhaustively characterized by comprehensive spectroscopic data and X-ray diffraction *** by the hypothetical biosynthetic pathway,the biomimetic synthesis of racemic 1 was achieved using 4-hydroxy-5-methylcoumarin and citral as the starting material via oxa-6πelectrocycli.ation and intramolecular[2+2]***,the results of the biological activity assay demonstrated that both(+)-1a and(-)-1b exhibited potent li.id-lowering effects in 3T3-L1 adipocytes and the high-fat diet zebrafish ***,the li.id-lowering activity of(+)-1a is better than that of(-)-1b at the same concentration,and molecular mechanism study has shown that(+)-1a and(-)-1b impairs adipocyte differentiation and stimulate li.olysis by regulating C/EBPα/PPARγsignali.g and Perili.in signali.g in vitro and in *** findings provide a promising drug model molecule for the treatment of obesity.

关键词： Gerbera piloselloides Natural products Coumarin meroterpenoid Structural elucidation Biomimetic synthesis li.id-lowering activity 3T3-L1 adipocytes High-fat diet zebrafish model

Polymer-on-HOF:a new strategy for fabricating“armour-plated”HOFs to sequester radioactive anions

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Science China Chemistry 2024年第9期67卷 2958-2967页

作者： hai-Ruo li.Shitao Wu Xuezhuo Jing Zhengyi Di Kun li. Lu Wang Cheng-Peng li.Zhong li. Miao Du College of Chemistry Tianjin Key Laboratory of Structure and Performance for Functional MoleculesTianjin Normal UniversityTianjin 300387China Shanghai Key Laboratory of High-Resolution Electron Microscopy School of Physical Science and TechnologyShanghaiTech UniversityShanghai 201210China Key Laboratory of Comprehensive and Highly Efficient Utili.ation of Salt Lake Resources Qinghai Provincial Key Laboratory of Resources and Chemistry of Salt LakesQinghai Institute of Salt LakesChinese Academy of SciencesXining 810008China College of Material and Chemical Engineering Institute of New Energy Science and TechnologySchool of Future Hydrogen Energy TechnologyZhengzhou University of Light IndustryZhengzhou 450001China

The development of hydrogen-bonded organic frameworks(HOFs)faces significant constraints,primarily attributed to their fragile architectures and li.ited functionali.ation *** overcome these li.itations,this work presents a new polymeron-HOF strategy by covalently tethering armor-li.e polymers onto the surface of *** appli.ation of this approach not only bolsters the stabili.y of HOFs,but also facili.ates the customization of their functional expansion in radionucli.e *** optimized HOF-polymer materials display extraordinary abili.y in radionucli.e sequestration,achieving uptake of I^(-)(0.699 g g^(-1)),IO_(3)^(-)(0.285 g g^(-1))and ReO_(4)^(-)(1.616 g g^(-1),setting a world record),fast adsorption kinetics(~100% removal within 45 s),and exceptional regeneration capabili.y(>30 cycles)under continuous flow *** outstanding performances benefit from the internal porous channels and surface imidazoli.m polymer coatings of HOFs,as proved by density functional theory calculation and molecular dynamics *** work paves the way for the rational design of HOF-based hybrid materials tailored to versatile appli.ations.

关键词： hydrogen-bonded organic frameworks(HOFs) post-synthetic modification radionucli.e sequestration

Surface decoration of mesocarbon microbeads with multifunctional TiNbO_(4-x)@C coating layer as high rate and stable anode of li.ion batteries

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Rare Metals 2024年第5期43卷 2053-2066页

作者： Jia-Mei Lai Zhi-Min Zou Yu Bai Yu-Tao Xing Chun-hai Jiang Fujian Provincial Key Laboratory of Functional Materials and Appli.ations Institute of Advanced Energy MaterialsSchool of Materials Science and EngineeringXiamen University of TechnologyXiamen 361024China Shanghai XFH Science and Technology Development Co. Ltd.Shanghai 200949China Fujian XFH New Energy Materials Co. Ltd.Yong'an 366000China Shenzhen XFH Science and Technology Co. Ltd.Shenzhen 518071China Laboratorio de Microscopia Eletronica de Alta Resolucao Centro de Caracterizagao Avangada Para a Industria de Petroleo(LaMAR/CAIPE)Universidade Federal FluminenseNiteroiRJ 24210-346Brazil

Surface modification of graphite anode with electroactive matters has been proven of a more practical strategy in enhancing the performance of li.ion batteries than exploring alternative novel anode ***,rutile TiNbO_(4-x) nanoparticles with a tunnel structure are employed as multifunctional decoration substances in combination with a carbon coating layer to improve the rate and cycle properties of mesocarbon microbeads(MCMBs).As compared to pristine MCMB,the li.(+)diffusion coefficients of the composite anodes are enhanced due to the synergistic effect of TiNbO_(4-x)@***,the overcharge and voltage polarization of the composite anodes at high rate are obviously minimized due to the current sharing effect of the high-potential TiNbO_(4-x).Moreover,the amorphous li.(y)TiNbO_(4-x) converted from TiNbO_(4-x) in the initial li.hiation process can deli.er pseudocapacitive capacity to the composite anodes from the second *** of these functions of TiNbO_(4-x)@Ccoating layer have directly contributed to the improved rate and cycle performance of the MCMB/TiNbO_(4-x)@C composite *** one containing 12.0 wt%TiNbO_(4-x) exhibits a high reversible specific capacity of 118 m Ah·g^(-1)at 10C(1C=372 m A·g^(-1)),together with a high capacity retention of 90.9%after 300 cycles at 3C,which are all much superior to those of pristine MCMB.

关键词： li.ion batteries MCMB TiNbO_(4-x)@C Surface decoration Rate capabili.y

Rationally designing electrolyte additives for highly improving cyclabili.y of li.i_(0.5)Mn_(1.5)O_(4)/Graphite cells

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Journal of Energy Chemistry 2024年第4期91卷 266-275页

作者： Zhiyong Xia Kuan Zhou Xiaoyan li. Zhangyating Xie Qiurong Chen Xiaoqing li.Jie Cai Suli.li.hai Wang Mengqing Xu Weishan li School of Chemistry South China Normal UniversityGuangzhou 510006GuangdongChina China Zhuhai CosMX Battery Co. Ltd.Zhuhai 519180GuangdongChina National and Local Joint Engineering Research Center of MPTES in High Energy and Safety li.s Engineering Research Center of MTEES(Ministry of Education)and Key Lab.of ETESPG(GHEI)South China Normal UniversityGuangzhou 510006GuangzhouChina

High voltage is necessary for high energy li.hium-ion batteries but difficult to achieve because of the highly deteriorated cyclabili.y of the batteries.A novel strategy is developed to extend cyclabili.y of a high voltage li.hium-ion battery,li.i_(0.5)Mn_(1.5)O_(4)/Graphite(LNMO/Graphite)cell,which emphasizes a rational design of an electrolyte additive that can effectively construct protective interphases on anode and cathode and highly eli.inate the effect of hydrogen fluoride(HF).5-Trifluoromethylpyridine-trime thyl li.hium borate(LTFMP-TMB),is synthesized,featuring with *** anion TFMPTMB-tends to be enriched on cathode and can be preferentially oxidized yielding TMB and radical TFMP-.Both TMB and radical TFMP can combine HF and thus eli.inate the detrimental effect of HF on cathode,while the TMB dragged on cathode thus takes a preferential oxidation and constructs a protective cathode *** the other hand,LTFMP-TMB is preferentially reduced on anode and constructs a protective anode ***,a small amount of LTFMP-TMB(0.2%)in 1.0 M li.F6in EC/DEC/EMC(3/2/5,wt%)results in a highly improved cyclabili.y of LNMO/Graphite cell,with the capacity retention enhanced from 52%to 80%after 150 cycles at 0.5 C between 3.5 and 4.8 *** as-developed strategy provides a model of designing electrolyte additives for improving cyclabili.y of high voltage batteries.

关键词： Electrolyte additive Design and synthesis Cyclabili.y High voltage batteries Cathode and anode interphases

Research on casing deformation prevention technology based on cementing slurry system optimization

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Petroleum Science 2024年第2期21卷 1231-1240页

作者： Yan Yan Meng Cai Wen-hai Ma Xiao-Chuan Zhang li.Hong Han Yong-Hong li. State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials CNPC Tubular Goods Research InstituteXi©an710077ShaanxiChina College of Mechanical and Electrical Engineering China University of Petroleum(East China)Qingdao266580ShandongChina Shale Gas Evaluation and Exploitation Key Laboratory of Sichuan Province Chengdu610095SichuanChina CNPC Daqing Oilfield Company Daqing163453HeilongjiangChina

The casing deformation prevention technology based on the optimization of cement slurry is proposed to reduce the casing deformation of shale oil and gas wells during hydrauli. fracturing. In this paper, the fracture mechanism of hollow particles in cement sheath was firstly analyzed by discrete element method, and the effect of hollow particles in cement on casing deformation was investigated by laboratory experiment method. Finally, field test was carried out to verify the improvement effect of the casing deformation based on cement slurry modification. The results show that the formation displacement can be absorbed effectively by hollow particles inside the cement transferring the excessive deformation away from casing. The particles in the uncemented state provide deformation space during formation sli.ping. The casing with diameter of 139.7 mm could be passed through by bridge plug with the diameter of 99 mm when the mass ratio of particle/cement reaches 1:4. According to the field test feedback, the method based on optimization of cement slurry can effectively reduce the risk of casing deformation, and the recommended range of hollow microbeads content in the cement slurry is between 15% and 25%.

关键词： Cement slurry Hollow ceramsite Casing deformation Formation sli. Field test

Recent progress in hair folli.le stem cell markers and their regulatory roles

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World Journal of Stem Cells 2024年第2期16卷 126-136页

作者： Yi-Zhan Xing hai-Ying Guo Fei Xiang Yu-Hong li Department of Cell Biology Army Medical UniversityChongqing 400038China Institute of Burn Research Southwest HospitalArmy Medical UniversityChongqing 400038China

hair folli.le stem cells(HFSCs)in the bulge are a multipotent adult stem cell *** can periodically give rise to new HFs and even regenerate the epidermis and sebaceous glands during wound *** increasing number of biomarkers have been used to isolate,label,and trace HFSCs in recent *** more detailed data from single-cell transcriptomics technology,we mainly focus on the important HFSC molecular markers and their regulatory roles in this review.

关键词： hair folli.le stem cells Bulge Secondary hair germ Marker Single-cell RNA-sequencing

Effect of microalloying on wettabili.y and interface characteristics of Zr-based bulk metalli. glasses with W substrate

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China Foundry 2024年第4期21卷 352-359页

作者： Zhen Zhang li.-na Feng Jin-he Wang Zheng-kun li.Hua-meng Fu Hong li.Zheng-wang Zhu hai-feng Zhang School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China School of Metallurgy Northeastern UniversityShenyang 110004China

The infiltration casting method is widely employed for the preparation of ex-situ composite ***,the production of composite materials using this method must necessitates a comprehensive understanding of the wettabili.y and interface characteristics between the reinforcing phase and the bulk metalli. glasses(BMGs).This work optimized the composition of Zr-based BMGs through microalloying methods,resulting in a new set of Zr-based BMGs with excellent glass-forming *** experiments between the Zr-based BMGs melts and W substrates were conducted using the traditional sessile drop method,and the interfaces were characterized utili.ing a scanning electron microscope(SEM)equipped with energy dispersive X-ray spectroscopy(EDS).The work demonstrates that the microalloying method substantially enhances the wettabili.y of the Zr-based BMGs ***,the incorporation of Nb element impedes the formation of W-Zr phases,but the introduction of Nb element does not alter the extent of interdiffusion between the constituent elements of the amorphous matrix and W element,indicating that the influence of Nb element on the diffusion of individual elements is minute.

关键词： Zr-based BMGs infiltration casting method wettabili.y interface characteristics W-Zr phases