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Revealing the effect of electrolyte coordination structures on the intercalation chemistry of batteries

Journal of Energy chemistry 2023年第6期81卷 149-156,I0006页

作者： Chao Wang Xianjin li Guiming Zhong Caixia Meng Shiwen li Guohui Zhang Yanxiao Ning Xianfeng li Qiang {3. State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China department of Chemical Physics University of Science and Technology of ChinaHefei 230026AnhuiChina Laboratory of Advanced Spectro-electrochemistry and li-ion Batteries Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian116023LiaoningChina Division of Energy Storage Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023LiaoningChina

In-depth understanding of the electrolyte-dependent intercalation chemistry in batteries through direct operando/in situ characterizations is crucial for the development of the high-performance ***,taking the Al/graphite battery as a model system,the effect of electrolyte coordination structure on the intercalation processes has been investigated over the batteries with either 1-hexyl-3.methylimidazolium chloride(HMICl)-AlCl_(3. or 1-ethyl-3.methylimidazolium chloride(EMICl)-AlCl_(3. ionic liquid electrolyte using operando X-ray photoelectron spectroscopy(XPS)and X-ray *** a weaker anion-cation interaction in HMI-based electrolyte,the XPS-derived atomic ratio between cointercalated N and intercalated Al is 0.9,which is lower than 1.6 for EMI-based *** to the additional de-solvation process,the batteries with the HMI-based electrolyte show a lower ionic diffusion rate,capacity,and cycling performance,which agree with the operando characterization *** findings highlight the critical role of the electrolyte coordination structure on the(co-)intercalation chemistry.

关键词： Operando surface characterization Electrolyte coordination structure De-solvation Intercalation chemistry

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Ta-doped modified Gd2O3.film for a novel high k gate dielectric

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Journal of Materials Science & Technology 2019年第10期35卷 2305-2311页

作者： Shuan li Yanqing Wu Guoling li Hongen Yu Kai {3. Yong Wu Jie Zheng Wenhuai Tian Xingguo li department of Materials Physics and chemistry University of Science and Technology BeijingBeijing 100083China beijing National Laboratory of Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China College of Materials Science and Engineering Qingdao UniversityQingdao 266071China

Gadolinium oxide(Gd2O3. film has potential as a candidate gate dielectric to replace Hf O2. In this work,we provide a simple method by trace Ta(~1%) doping to significantly improve the dielectric properties of Gd2O3.film. And effects of annealing temperatures of Ta-doped Gd2O3.GTO) films are investigated in detail. Results show that GTO film annealed at 500℃ exhibits excellent performance as a novel gate dielectric material for integrated circuit, showing a small surface roughness of 0.199 nm, a large band gap of 5.45 e V, a high dielectric constant(k) of 21.2 and a low leakage current density(Jg) of 2.10 × 10^-3./cm^*** properties of GTO films are superior to pure Gd2O3.films and these GTO films meet the requirements for next-generation gate dielectrics. In addition, impedance spectrum is first used to analyze the equivalent circuit of GTO based metal-oxide-semiconductor(MOS) capacitors, which represents a new insight to understand observed electrical behaviors.

关键词： Rare earth oxides High k film Magnetron sputtering Annealing temperature Gate dielectrics

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Dynamic Ring-chain Equilibrium of Nucleophilic Thiol-yne "Click" Polyaddition for Recyclable Poly(dithioacetal)s

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Chinese Journal of Polymer Science 2021年第9期39卷 1146-1154页

作者： Jin-Xia Lei Qi-Yuan Wang fu-Sheng Du Zi-Chen li beijing National Laboratory for Molecular Sciences(BNLMS) Key Laboratory of Polym.Chem.&Physics of Ministry of EducationDepartment of Polymer Science&EngineeringCollege of Chemistry and Molecular EngineeringCenter for Soft Matter Science and EngineeringPeking UniversityBeijing 100871China

We report a dynamic polymerization system based on the reversible nucleophilic Michael polyaddition of activated alkynes and *** poly(dithioacetal)s(P1-P4)were prepared via the base-catalyzed thiol-yne"click"polyaddition of two dithiols(1,4-butanedithiol(4S)and 1,5-pentanedithiol(5S))and two alkynones(3.butyn-2-one(Y1)and 1-phenyl-2-propyn-1-one(Y2))at high *** systematically investigated the base-catalyzed polymerization of 4S and Y1(for polymer PI)under different conditions,and found that this polymerization was a highly concentration-dependent dynamic system:polymer PI was formed at high concentration,while seven-membered dithioacetal,1-(1,3.dithiepan-2-yl)propan-2-one(C1),was obtained at low *** polymerization of 4S and Y2(for polymer P4)displayed similar polymerization behavior,generating 2-(1,3.dithiepan-2-yl)-1-phenylethanone(C4)at low *** the contrary,polymer P2(from Y1 and 5S)was exclusively obtained with no formation of eight-membered *** polymerizations of Y1 with 1,2-ethanedithiol(2S)and 1,3.dimercaptopropane(3.)only afforded corresponding five-and six-membered dithioacetals,1-(1,3.dithiolan-2-yl)propan-2-one(C2)and 1-(1,3.dithian-2-yl)propan-2-one(C3..This dynamic behavior of PI and P4 was attributed to the concentration-dependent retro-Michael addition reaction between a thiol and a β-sulfido-α,β-unsaturated carbonyl compound catalyzed by ***,polymers P1 and P4 could be depolymerized into Cl and C4 in yields of 58% and 95%,*** ring-opening polymerization of Cl at high concentration could successfully regenerate polymer ***,a new type of closed-loop recyclable poly(dithioacetal)s was developed.

关键词： Poly(dithioacetal)s Nucleophilic thiol-yne"click"polyaddition Chemical recycling Ring-chain equilibrium

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Flexible Organic Framework-Modified Membranes for Osmotic Energy Harvesting

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中国化学:英文版 2023年第14期41卷 1713-1719页

作者： Tao lin Lei Zhang Chao li Yong-Hong fu Longcheng Gao Jun-li Hou department of chemistry Fudan University220 Handan RoadShanghai200433 China Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing100191 China

Bioinspired membranes are advantageous in capturing the osmotic ***,the conventional hybrid membranes possess low harvesting power density due to their low interfacial ionic transport efficiency and high internal ***,a new kind of hybrid membranes consisting of porous polymer and flexible organic frameworks was *** 3. porous framework enables ions to flux with high efficiency at the polymer-framework interface,resulting in high osmotic energy harvesting *** systematically screening the pore size of the frameworks,the output power density as high as 5.7 W/m^(2) was achieved under 50-fold KCl salinity gradient.

关键词： Osmotic energy harvesting Hybrid membrane Nanochannel Flexible organic frameworks Power density

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Shape-controlled synthesis of highly monodisperse and small size gold nanoparticles

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Science china chemistry 2007年第4期50卷 494-500页

作者： fu YunZhi DU YuKou YANG Ping li JinRu JIANG Long department of chemistry Suzhou UniversitySuzhou 215006China Key Laboratory of Colloids and Surfaces Institute of ChemistryChinese Academy of SciencesBeijing 100080China

We describe here that fine control of nanoparticle shape and size can be achieved by systematic varia-tion of experimental parameters in the seeded growth procedure in aqueous solution. Cubic and spherical gold nanoparticles are obtained respectively. In particularly, the Au cubes are highly mono-disperse in 3.±2 nm diameter. The experimental methods involve the preparation of Au seed particles and the subsequent addition of an appropriate quantity of Au seed solution to the aqueous growth solutions containing desired quantities of CTAB and ascorbic acid (AA). Here, AA is a weak reducing agent and CTAB is not only a stable agent for nanoparticles but also an inductive agent for leading increase in the face of nanoparticle. Ultraviolet visible spectroscopy (UV-vis), X-ray diffraction (XRD), transmission electron microscopy (TEM) are used to characterize the nanoparticles. The results show that the different size gold nanoparticles displayed high size homogenous distribution and formed mono-membrane at the air/solid interface.

关键词： Au cubes seed grow up cetyltrimethylammoniumbromide (CTAB) ascorbic acid (AA)

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Emerging contaminants:A One Health perspective

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The Innovation 2024年第4期5卷 140-170,139页

作者： Fang Wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun Wang Yuhao fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu Wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao li Tong Zhang Natàlia Corcoll Min liu Daniel SAlessi Hui li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu Wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang Yongming Luo lizhong Zhu Xiangdong li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China department of chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical chemistry South China Normal UniversityGuangzhouGuangdong 510006China department of Environmental Science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental Science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for {3.ture generations.

关键词： pollution planet contaminants

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Temperature modulation of concentration quenching in lanthanide-doped nanoparticles for enhanced upconversion luminescence

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Nano Research 2018年第4期11卷 2104-2115页

作者： Luoyuan li Ningjiu Zhao limin fu Jing Zhou Xicheng Ai Jianping Zhang department of chemistry Renmin University of China Beijing 100872 China State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China department of chemistry Capital Normal University Beijing 100048 China

The doping concentration of lanthanide ions is important for manipulating the luminescence properties of upconversion nanoparticles （UCNPs）. However, the serious concentration quenching in highly doped UCNPs remains a vital restriction for further enhanced upconversion luminescence （UCL）. Herein, we examined the effect of temperature on the concentration quenching of rare-earth UCNPs, an issue that has been overlooked, and we show that it is significant for biomedical or optical applications of UCNPs. In this work, we prepared a series of UCNPs by doping Er3. luminescent centers at different concentrations in a NaLuF4：Yb3. matrix. At room temperature （298 K）, steady-state photoluminescence （PL） spectroscopy showed substantial concentration quenching of the Er~ emission with increasing doping concentrations. However, the concentration quenching effect was no longer effective at lower temperatures. Kinetic curves obtained from time-resolved PL spectroscopy further showed that the concen- tration quenching dynamics were vitally altered in the cryogenic temperature region, i.e., below 160 K. Our work on the temperature-switchable concentration quenching mechanism may shed light on improving UCL properties, promoting their practical applications.

关键词： upconversionluminescence lanthanide-doped nanoparticle temperature modulation concentration quenching energy transfer

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Au/CuSiO3.nanotubes: High-performance robust catalysts for selective oxidation of ethanol to acetaldehyde

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Nano Research 2016年第9期9卷 2681-2686页

作者： Xianjun Du Ninghua fu Shaolong Zhang Chen Chen Dingsheng Wang Yadong li department of chemistry & Collaborative Innovation Center for Nanomaterial Science and Engineering Tsinghua UniversityBeijing 100084China

Novel gold-supporting silicate nanotubes are synthesized via a hydrothermal method followed by colloid deposition. Their catalytic performance for the selective oxidation of ethanol to acetaldehyde is assessed. The results show that Au/CuSiO3.anotubes exhibit both high activity and selectivity at high gas hourly space velocity (GHSV). Ethanol conversion can reach up to ~98%, and the selectivity for acetaldehyde is ~93. at 250 °C and ~100,000 mL·gcat–1·h–1. In comparison, the catalytic activity of Au/MgSiO3.anotubes is relatively low, and ethanol conversion reaches only ~25% at 250 °C. However, when Cu species are added to Au/MgSiO3. the catalytic activity improves significantly, indicating that the interactions between Au nanoparticles and Cu species are responsible for the high performance for selective oxidation of ethanol to acetaldehyde. [Figure not available: see fulltext.] © 2016, Tsinghua University Press and Springer-Verlag Berlin Heidelberg.

关键词： ultrathin nanowires AuPd alloy catalysts

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Association between serum levels of TSH and free T4 and per- and polyfluoroalkyl compounds concentrations in pregnant women

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Journal of Environmental Sciences 2023年第2期124卷 11-18页

作者： Aijing li Jian Hou Jianjie fu YinanWang Yifei Hu Taifeng Zhuang Menglong li Maoyong Song Guibin Jiang State Key Laboratory of Environmental chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of ScienceBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China department of Epidemiology and Biostatistics College of Public HealthZhengzhou UniversityZhengzhou 450001China beijing Obstetrics and Gynecology Hospital Capital Medical UniversityBeijing 100026China department of Child Adolescent Health and Maternal CareSchool of Public HealthCapital Medical UniversityBeijing 100069China

Many per-and polyfluoralkyl substances(PFASs)may disrupt maternal thyroid hormone homeostasis in *** should be raised regarding the PFASs exposure in pregnant women because thyroid hormones are involved in the early development of the *** this study,we measured the concentrations of 13.PFASs,including five novel shortchain PFASs,in serum from 123.pregnant women in beijing,*** regression models were used to investigate the association between thyroid-stimulating hormone(TSH)or free thyroxine(FT4)levels and PFASs concentrations under consideration of the impacts of pregnancy-induced physiological *** found that perfluorobutanoic acid(PFBA)(β=0.189,95%CI=-0.03.,0.417,p=0.10)and perfluorodecanoic acid(PFDA)(β=-0.554,95%CI=-1.16,0.049,p=0.071)were suggestive of significant association with TSH in thyroid peroxidase antibody(TPOAb)negative *** association was observed between all PFASs and FT4 levels after controlling for these confounding factors,such as BMI,gestational weight gain and maternal *** findings suggest that it should pay more attention to the association between thyroid hormone levels and short-chain PFASs *** studies could consider a greater sample and the inclusion of other clinical indicators of thyroid {3.nction,such as free T3.and total T3.

关键词： Per-and polyfluoralkyl substances Short-chain perfluoroalkyl acids Thyroid hormone Thyroid peroxidase antibody

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2D/2D type-Ⅱ Cu2ZnSnS4/Bi2WO6 heterojunctions to promote visible-light-driven photo-Fenton catalytic activity

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Chinese Journal of Catalysis 2020年第3期41卷 503-513页

作者： li Guo Kailai Zhang Xuanxuan Han Qiang Zhao Yuanyuan Zhang mian Qi Danjun Wang Feng fu Shaanxi Key Laboratory of Chemical Reaction Engineering College of Chemistry&Chemical EngineeringYan’an UniversityYan’an 716000ShaanxiChina

In this work,a set of novel Cu2ZnSnS4/Bi2WO6(CZTS/BWO)two-dimensional(2 D)/two-dimensional(2 D)type-Ⅱheterojunctions with different CZTS weight ratios(1%,2%,and 5%)were successfully synthesized via a brief secondary solvothermal *** successful formation of the heterojunctions was affirmed by characterization methods such as X-ray photoelectron spectroscopy and high-resolution transmission electron *** photocatalytic activity results showed that the prepared CZTS/BWO heterojunctions had excellent photocatalytic behaviors for organic degradation,especially when the mass fraction of CZTS with respect to BWO in the composite was 2%.Moreover,the addition of hydrogen peroxide(H2O2)could further improve the dye and antibiotic degradation *** reinforced photocatalytic and photo-Fenton degradation performance were primarily attributable to the introduction of BWO,which afforded increased active sites,expanded the solar spectral response range,and accelerated the cycle of Cu(Ⅱ)/Cu(Ⅰ);after four cyc{3.ng times,its catalytic activity did not decrease *** addition,reasonable hypotheses of the photocatalytic and photo-Fenton catalytic mechanisms were *** study is expected to provide a visual approach for designing a novel photo-Fenton catalyst to jointly uti{3.ze the photocatalytic and Fenton activities,which can be better app{3.ed to the purification of residual organics in wastewater.

关键词： Cu2ZnSnS4 Bi2WO6 2D/2D type-Ⅱheterojunction Photo-Fenton Photocatalysis

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