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Tungsten chalcogenides as anodes for potassium-ion batteries

Tungsten 2024年第2期6卷 278-292页

作者： Yu-Han Wu Wei-Hao Xia Yun-zhuo liu Peng-Fei Wang Yu-Hang Zhang Jin-Ru Huang Yang Xu De-Ping li li-Jie Ci School of Environmental and Chemical Engineering Shenyang University of TechnologyShenyang 110870China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China State Key Laboratory of Advanced Welding and Joining School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China Department of Chemistry University College LondonLondon WC1H 0AJUnited Kingdom

Potassium-ion batteries(PIBs)by virtue of their strong cost competitiveness and similar electrochemical properties to lithiumion batteries have been deemed to be a promising electrochemical energy storage *** promote the application in the commercial market,developing electrode materials with high specifi c capacities,superior cycling stability,and reliable safety is of great *** materials as an important component of PIBs play a decisive role,among which twodimensional transition metal chalcogenides(2D TMCs)have attracted wide attention owing to their unique material and electrochemical *** the 2D TMCs’family,molybdenum chalcogenides as fl agship are the most studied materials and demonstrated the potential as *** the deepening of research on 2D TMCs,another shining member that possesses similar properties to molybdenum chalcogenides,tungsten chalcogenides(WS_(2),WSe_(2),and WTe_(2)),has aroused tremendous *** many inspiring results,various challenges remain to be further addressed;meanwhile,some results are still unclear and ***,this review fi rst introduces their material properties and electrochemical storage ***,we systematically overview the research progress and put forward promoting improvement ***,challenges and opportunities that would be future research directions are discussed.

关键词： Electrochemical energy storage Potassium-ion batteries Anodes Tungsten chalcogenides

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Surface doping effect on the optoelectronic performance of 2D organic crystals based on cyano-substituted perylene diimides

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Chinese Chemical Letters 2024年第9期35卷 193-197页

作者： Jaeyong Ahn Zhenping li Zhiwei Wang Ke Gao Huagui zhuo Wanuk Choi Gang Chang Xiaobo Shang Joon Hak Oh School of Chemical and Biological Engineering Institute of Chemical ProcessesSeoul National UniversitySeoul 08826South Korea State Key Laboratory for Mechanical Behavior of Materials Shaanxi International Research Center for Soft MatterSchool of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Center for Ordered Nanoporous Materials Synthesis School of Environmental Science and EngineeringPohang University of Science and TechnologyGyeongbuk 37673South Korea Instrumental Analysis Center of Xi’an Jiaotong University Xi’an 710049China

Compared to organic thin films,organic single crystals offer significant potential in organic phototransistors(OPTs)due to their enhanced charge transport,large surface area,and defect-free ***,the development of n-type semiconductors has lagged behind p-type *** enhance semiconductor device performance,a doping process can be employed,which typically involves the introduction of charged impurities into the crystalline semiconducting *** aim is to reduce the Ohmic losses,increase carrier density,improve transport capabilities,and facilitate effective carrier injection,ultimately enhancing the electrical properties of the *** doping processes,however,often pose a risk of damaging the structure of single *** this study,we have synthesized novel cyanosubstituted chiral perylene diimides,which self-assemble into two-dimensional single crystals that can be used for n-type semiconductor *** have employed a surface doping strategy using diethylamine vapor without disrupting the crystal *** fabricated devices exhibit significantly higher charge transport properties after doping,achieving a maximum electron mobility of 0.1. cm^(2)V^(-1.s^(-1.,representing an improvement of over ***,the optoelectronic performance of the doped devices has significantly improved,with the external quantum efficiency increased by over 9 times and the significantly improved response *** results suggest that our surface doping technology is a promising way for enhancing the performance of 2D organic single-crystal OPTs.

关键词： Doping effect Phototransistors Perylene diimides Organic crystals Cyano substitution

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Dual-single-atoms of Pt-Co boost sulfur redox kinetics for ultrafast li-S batteries

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Carbon Energy 2024年第3期6卷 53-63页

作者： Hanyan Wu Xuejie Gao Xinyang Chen Weihan li Junjie li Lei Zhang Yang Zhao Ming Jiang Runcang Sun Xueliang Sun Center for lignocellulosic Chemistry and Biomaterials College of Light Industry and Chemical EngineeringDalian Polytechnic UniversityDalianChina Department of Mechanical and Materials Engineering University of Western OntarioLondonOntarioCanada Institute of Physical Science and Information Technology Anhui UniversityHefeiChina

Applications of lithium-sulfur(li-S)batteries are still limited by the sluggish conversion kinetics from polysulfide to li_(2)*** various single-atom catalysts are available for improving the conversion kinetics,the sulfur redox kinetics for li-S batteries is still not ***,in this work,a catalyst with dual-single-atom Pt-Co embedded in N-doped carbon nanotubes(Pt&Co@NCNT)was proposed by the atomic layer deposition method to suppress the shuttle effect and synergistically improve the interconversion kinetics from polysulfides to li_(2)*** X-ray absorption near edge curves indicated the reversible conversion of li_(2)Sx on the S/Pt&Co@NCNT ***,density functional theory demonstrated that the Pt&Co@NCNT promoted the free energy of the phase transition of sulfur species and reduced the oxidative decomposition energy of li_(2)*** a result,the batteries assembled with S/Pt&Co@NCNT electrodes exhibited a high capacity retention of 80%at 1.0 cycles at a current density of 1.3 mA cm^(−2)(S loading:2.5 mg cm^(−2)).More importantly,an excellent rate performance was achieved with a high capacity of 822.1.mAh g^(−1. at a high current density of 1..7 mA cm^(−2).This work opens a new direction to boost the sulfur redox kinetics for ultrafast li-S batteries.

关键词： DFT calculation dual-single-atoms of Pt-Co fast li-sulfur batteries sulfur redox kinetics XANES analysis

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Design,synthesis and biological evaluation of fluorescent derivatives of ursolic acid in living cells

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Chinese Chemical Letters 2024年第5期35卷 287-289页

作者： Wenyi Mei lijuan Xie Xiaodong Zhang Cunjian Shi Fengzhi Wang Qiqi Fu Zhenjiang Zhao Honglin li Yufang Xu zhuo Chen Shanghai Key Laboratory of New Drug Design State Key Laboratory of Bioreactor EngineeringSchool of PharmacyEast China University of Science and TechnologyShanghai 200237China Innovation Center for AI and Drug Discovery East China Normal UniversityShanghai 200062China lingang Laboratory Shanghai 200031China

Ursolic acid(UA)is a naturally occurring ursane triterpenoid,which exhibits a wide range of unique biological *** clarify its mechanism of action(MOA),a series of fluorescent derivatives of UA(5a-c)were designed and synthesized by conjugation with 7-nitrobenzo-2-oxa-1.3-diazole(NBD)*** them,5c exhibited similar anti-proliferative activity with UA against HCT1.6 cells(half maximal inhibitory concentration(IC_(50))=9.21.0.50μmol/L).Cell imaging experiment indicated that 5c was rapidly taken up in HCT1.6 cells in a dose and time-dependent ***,5c was found to localize in endoplasmic reticulum(ER),lysosomes,and mitochondria,but not in nucleus of HCT1.6 cells by confocal microscopy *** MOA proved that UA induced autophagy with a unique intracellular distribution mechanism involving ER and *** all,our work provides new clues for revealing the molecular mechanism of UA as an antitumor agent.

关键词： Pentacyclic triterpenoid Ursolic acid Fluorescent derivatives Autophagy Apoptosis

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Ultrahigh strength and uniform corrosion in Zn-li alloys through ultrahigh pressure supersaturated solid solution treatment for biodegradable orthopedic applications

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Rare Metals 2024年第10期43卷 5284-5304页

作者： Wan-Ying li Yi-Long Dai Wen-Hao Cai Si-Han lin lin Guo De-Chuang Zhang Yuncang li Cuie Wen School of Materials Science and Engineering Xiangtan University Department of Prosthodontics Shanghai Ninth People′s HospitalShanghai Jiao Tong University Key Laboratory of Low Dimensional Materials&Application Technology Ministry of EducationXiangtan University School of Engineering RMIT UniversityMelbourne

Zn-li alloys are considered promising candidate materials for biodegradable orthopedic implant applications due to their high mechanical performance and good ***,the presence of a large number of second-phase particles in this class of Zn alloys can lead to severe localized degradation due to micro-galvanic corrosion,which is detrimental to the mechanical integrity of the alloys during tissue healing in the human *** this study we report ultrahigh strength,uniform corrosion,good cytocompatibility,and effective antibacterial ability in Zn-x li（x=0.3,0.5,0.7;wt%） alloys achieved through supersaturated solid solution treatment （SSST） at 375℃ under ultrahigh pressure of 3 GPa.A high concentration of β-liZn4phases coexisted with the-Zn matrix in the as-cast Zn-x li alloys,whereas almost all the li dissolved into the-Zn matrix of SSST *** yield strength was 437 MPa for SSST Zn-0.3li,592 MPa for SSST Zn-0.5 li and 686 MPa for SSST *** SSST Zn-li alloys showed uniform degradation with remarkably reduced degradation rates compared to their as-cast *** 25% concentration extracts of the Zn-x li alloys demonstrated no cytotoxicity toward MC3T3-E1.cells,and the alloys exhibited effective antibacterial ability agains methicillin-resistant staphylococcus aureus.

关键词： Corrosion behavior Mechanical property Supersaturated solid solution treatment (SSST) Ultrahigh pressure Zn-li alloy

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Endoplasmic reticulum-targeted delivery of celastrol and PD-L1.siRNA for reinforcing immunogenic cell death and potentiating cancer immunotherapy

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Acta Pharmaceutica Sinica B 2024年第8期14卷 3643-3660页

作者： Jie Wang Zilong Zhang Yan zhuo Zhuan Zhang Rongrong Chen li liang Xiaohe Jiang Di Nie Chang liu Zhiwen Zou Xiang li Jiaxin li Bingqi Wang Rui Wang Yong Gan Miaorong Yu School of Pharmacy Shanghai University of Traditional Chinese MedicineShanghai 201203China State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China Jiangxi Medical College Nanchang UniversityNanchang 330006China School of Pharmacy Nanjing University of Chinese MedicineNanjing 210023China University of Chinese Academy of Sciences Beijing 100049China NMPA Key Laboratory for Quality Research and Evaluation of Pharmaceutical Excipients National Institutes for Food and Drug ControlBeijing 100050China

The prospect of employing chemoimmunotherapy targeted towards the endoplasmic reticulum(ER)presents an opportunity to amplify the synergistic effects of chemotherapy and *** this study,we initially validated celastrol(CEL)as an inducer of immunogenic cell death(ICD)by promoting ER stress and autophagy in colorectal cancer(CRC)***,an ER-targeted strategy was posited,involving the codelivery of CEL with PD-L1.small interfering RNAs(siRNA)using KDEL peptide-modified exosomes derived from milk(KME),to enhance chemoimmunotherapy *** findings demonstrate the efficient transportation of KME to the ER via the Golgi-to-ER *** to their non-targeting counterparts,KME exhibited a significant augmentation of the CEL-induced ICD ***,it facilitated the release of danger signaling molecules(DAMPs),thereby stimulating the antigen-presenting function of dendritic cells and promoting the infiltration of T cells into the ***,the ER-targeted delivery of PD-L1.siRNA resulted in the downregulation of both intracellular and membrane PD-L1.protein expression,consequently fostering the proliferation and activity of CD8^(+)T ***,the ER-targeted formulation exhibited enhanced anti-tumor efficacy and provoked anti-tumor immune responses against orthotopic colorectal tumors in ***,a robust ER-targeted delivery strategy provides an encouraging approach for achieving potent cancer chemoimmunotherapy.

关键词： Chemoimmunotherapy Targeted drug delivery Endoplasmic reticulum Endoplasmic reticulum stress Immunogenic cell death siRNA Chemoimmunotherapy Targeted drug delivery Endoplasmic reticulum Endoplasmic reticulum stress Immunogenic cell death siRNA

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Chemical Activation of S/li2S in li-S Batteries by a Bidirectional Organic Redox Mediator

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Chemical Research in Chinese Universities 2024年第5期40卷 927-934页

作者： li Chengqiu ZHOU Chaoyong MEI Shilin YAO Changjiang State Key Laboratory of Explosion Science and Safety Protection School of Mechatronical EngineeringBeijing Institute of TechnologyBeijing100081P.R.China Xi’an Safty Energy Technology Co. Ltd.Xi’an710299P.R.China

The energy density and lifespan of prototype li-S batteries under high sulfur loading and lean electrolyte have been mainly restricted by the incomplete interconversion between insulating S8 and *** introduction of an electrocatalyst has been preserved as an effective way to breakthrough the bottleneck of the interconversion ***,we demonstrate a novel bidirectional redox mediator,insoluble dithiobisphthalimide(DTPI),as the electrocatalyst for both S8 reduction and li2S *** to the dual-functional role of both electron/li^(+)donor and acceptor,DTPI can efficiently accelerate the redox reactions during charge/discharge and significantly alleviate the incomplete conversion of sulfur ***,the li-S batteries with DTPI deliver superior specific capacity and cycling stability in comparison with those without ***,the redox mediator is scalable for synthesis and the DTPI-based 5 A·h pouch cell delivers a specific discharge capacity of around 870 mA·h·g^(−1. at 0.1.C(1.C=1.75 mA/g)without capacity fading over 80 *** bidirectional catalysis mechanism has been studied through theoretical calculation and ex-situ characterization of the cathode *** work approves the effectiveness of bidirectional organic redox mediator in the construction of practical li-S batteries.

关键词： lithium-sulfur battery(LSB) Dithiobisphthalimide(DTPI) Organic redox mediator Interconversion

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Identification of Key Blood Biomarkers linking Di(2-ethylhexyl)Phthalate and Autoimmune Diseases in Adolescents Mice

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Biomedical and Environmental Sciences 2024年第5期37卷 521-525页

作者： XU Xiao Mei li Xiao Lu HU Die CAI Xiao Yue li Qi Meng ZHENG Yuan zhuo CAI Yang QI Yin Yin XU Tao ZHAO ling li NING Xia Department of Infectious Diseases Anhui Provincial Children’s HospitalHefei 231000AnhuiChina Department of Toxicology School of Public HealthKey Laboratory of Environmental Toxicology of Anhui Higher Education InstitutesAnhui Medical UniversityHefei 231000AnhuiChina School of Biology Food and EnvironmentHefei UniversityHefei 230601AnhuiChina

Di(2-ethylhexyl)phthalate(DEHP)is a widely used plasticizer known for its reproductive developmental and immune system toxicity,mainly through esophagal,dermal,and respiratory exposure^([1.3]).Maternal exposure to DEHP during pregnancy can lead to adverse birth outcomes in offspring,including impacts on the thyroid system of adolescent offspring^([2-4]).

关键词： Blood respiratory pregnancy

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Series Reports from Professor Wei's Group of Chongqing University:Advancements in Electrochemical Energy Conversions(1.4):Report 1.High-performance Oxygen Reduction Catalysts for Fuel Cells

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电化学（中英文） 2024年第7期30卷 1-27页

作者： Fa-Dong Chen zhuo-Yang Xie Meng-Ting li Si-Guo Chen Wei Ding li li Jing li Zi-Dong Wei State Key Laboratory of Advanced Chemical Power Sources(Chongqing University) College of Chemistry and Chemical EngineeringChongqing UniversityChongqing400044China

Two major challenges,high cost and short lifespan,have been hindering the commercialization process of lowtemperature fuel *** Wei's group has been focusing on decreasing cathode Pt loadings without losses of activity and durability,and their research advances in this area over the past three decades are briefly reviewed *** the Pt-based catalysts and the low Pt usage,they have firstly tried to clarify the degradation mechanism of Pt/C catalysts,and then demonstrated that the activity and stability could be improved by three strategies:regulating the nanostructures of the active sites,enhancing the effects of support materials,and optimizing structures of the three-phase *** Pt-free catalysts,especialiy carbon-based ones,several strategies that they proposed to enhance the activity of nitrogen-/heteroatom-doped carbon catalysts are firstly ***,an indepth understanding of the degradation mechanism for carbon-based catalysts is discussed,and followed by the corresponding stability enhancement ***,the carbon-based electrode at the micrometer-scale,faces the challenges such as low active-site density,thick catalytic layer,and the effect of hydrogen peroxide,which require rational structure design for the integral cathodic *** review finally gives a brief conclusion and outlook about the low cost and long lifespan of cathodic oxygen reduction catalysts.

关键词： Fuel cell Oxygen reduction reaction Pt-based catalyst Carbon-based catalyst

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Design and synthesis of polyoxovanadate-based framework for efficient dye degradation

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Tungsten 2024年第2期6卷 447-453页

作者： Qing Lan Su-Juan Jin Zheng Wang Xu-Yang li Yan Xiong zhuo-Cheng Wang Shan-Shan liu Zhi-Ming Zhang Qiang Zhao Engineering Technology Research Center of Henan Province for Solar Catalysis School of Chemical and Pharmaceutical EngineeringNanyang Normal UniversityNanyang 473061China Institute of New Energy Materials&Low Carbon Technology Tianjin University of TechnologyTianjin 300384China

A new polyoxovanadate-based framework material[Cu(en)_(2)]_(4)V_(1.)O_(42)(H_(2)O)·6H_(2)O(1.was designed and synthesized by hydrothermal reaction of NaVO_(3),Cu(NO_(3))_(2)·6H_(2)O and 1.2-diaminoethane(en)via carefully adjusting the pH value of the reaction *** structure of the title compound has been determined by single-crystal X-ray diff raction analysis,thermogravimetric analysis,infrared spectra and elemental *** structural analysis demonstrate the three-dimensional(3D)framework structure of compound 1.which was composed of the[V_(1.)O_(42)(H_(2)O)]_(8)−({V_(1.)O_(42)(H_(2)O)})anions linked by the Cu^(2+)*** 1.represents the fi rst 3D framework based on{V_(1.)O_(42)(H_(2)O)}polyoxoanions and copper ***-driven degradation of residual organic pollutants in industrial wastewater is still a major problem for human *** experiments reveal that compound 1.possesses of excellent photocatalytic activity for the degradation of methylene blue and rhodamine B.

关键词： Polyoxovanadate Framework Polyoxovanadate-based framework Photocatalytic Organic pollutants

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