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Synthesis, Crystal Structure and Magnetic Properties of Two Ribbon-shaped Chalcogenidometalate Complexes(Butyl-Sn)4S8M2(TEPA)2(M = Mn, Ni)

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Chinese Journal of Structural Chemistry 2020年第8期39卷 1503-1508,1361页

作者： lai heng-Dong LIN Qi-Pu State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China

Under solvothermal conditions,two ribbon-shaped chalcogenidometalate coordination compounds(butyl-Sn)4S8M2(TEPA)2(M=Mn(1),Ni(2),TEPA=tetraethylenepentamine),have been synthesized and characterized by elemental analysis,energy dispersive X-ray,infrared/ultraviolet-visible spectroscopy,thermogravimetric analysis,single-crystal and powder X-ray *** 1 and 2 crystallize in the triclinic space group P1 with a=13.999(3),b=14.658(4),c=16.150(4)A,a=68.78(3)°,β=69.12(3)°,γ=72.07(3)°,V=2825.0(14)A3,Z=2,Mr=1448.28,μ=2.503 mm-1,F(000)=1444,GOOF=1.001,R=0.0629 and wR=0.1286 for 12855 observed reflections with I>2σ(I)for 1;and a=11.029(3),b=11.858(2),c=11.888(3)A,a=87.27(2)°,β=69.10(2)°,γ=83.63(2)°,V=1443.6(6)A^3,Z=1,Mr=1455.78,μ=2.660 mm^-1,F(000)=728,GOOF=1.017,R=0.0464 and wR=0.1185 for 9267 observed reflections with I>2σ(I)for 2,*** 1 and 2 are composed of linear hexamer{Sn4M2}(M=Mn for 1,and Ni for 2)with 8μ2-S2-bridges and 2 TEPA terminal *** the quite large inter-paramagnetic-cation spacing(dMn-S-Sn-S-Sn-S-Sn-S-Sn-S-Mn=13.485 A,dNi-S-Sn-S-Sn-S-Sn-S-Sn-S-Ni=14.078 A),two samples exhibit distinct ferromagnetic-like behaviors with the intradimer coupling constant(J)and Weiss(θ)values up to 6.8 cm^-1 and 8.5 K for 1 and 17.2 cm-1 and 21.1 K for 2 calculated from the temperature dependence of the magnetic susceptibility.

关键词： chalcogenidometalates organotin-sulfides linear complexes magnetic properties

Surface modification of LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 with Cr_2O_3 for lithium ion batteries

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Rare Metals 2012年第2期31卷 140-144页

作者： Li, Xiaowei Lin, Yingbin Liin, Ying lai, heng Huang, Zhigao Physics Department Fujian Normal University Fuzhou 350007 China

Cr 2 O 3-coated LiNi 1/3 Co 1/3 Mn 1/3 O 2 cathode materials were synthesized by a novel method. The structure and electrochemical properties of prepared cathode materials were measured using X-ray diffraction (XRD), scanning electron microscopy (SEM), charge-discharge tests, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The measured results indicate that surface coating with 1.0 wt% Cr 2 O 3 does not affect the LiNi 1/3 Co 1/3 Mn 1/3 O 2 crystal structure (α-NaFeO 2 ) of the cathode material compared to the pristine material, the surfaces of LiNi 1/3 Co 1/3 Mn 1/3 O 2 samples are covered with Cr 2 O 3 well, and the LiNi 1/3 Co 1/3 Mn 1/3 O 2 material coated with Cr 2 O 3 has better electrochemical performance under a high cutoff voltage of 4.5 V. Moreover, at room temperature, the initial discharging capacity of LiNi 1/3 Co 1/3 Mn 1/3 O 2 material coated with 1.0 wt.% Cr 2 O 3 at 0.5C reaches 169 mAh·g 1 and the capacity retention is 83.1% after 30 cycles, while that of the bare LiNi 1/3 Co 1/3 Mn 1/3 O 2 is only 160.8 mAh·g 1 and 72.5%. Finally, the coated samples are found to display the improved electrochemical performance, which is mainly attributed to the suppression of the charge-transfer resistance at the interface between the cathode and the electrolyte.

关键词： lithium ion batteries LiNi 1/3 Co 1/3 Mn 1/3 O 2 Cr 2 O 3 coating

Nano-crystalline FeOOH mixed with SWNT matrix as a superior anode material for lithium batteries

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Journal of Energy Chemistry 2014年第4期23卷 513-518页

作者： Mingzhong Zou Weiwei Wen Jiaxin Li Yingbin Lin heng lai Zhigao Huang College of Physics and Energy Fujian Normal University State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of Sciences

Nano-crystalline FeOOH particles （5-10 nm） have been uniformly mixed with electric matrix of single-walled carbon nanotubes （SWNTs） for forming FeOOH/SWNT composite via a facile ultrasonication method. Directly using the FeOOH/SWNT composite （containing 15 wt% SWNTs） as anode material for lithium battery enhances kinetics of the Li＋ insertion/extraction processes, thereby effectively improving re- versible capacity and cycle performance, which delivers a high reversible capacity of 758 mAh.g-1 under a current density of 400 mA.g-1 even after 180 cycles, being comparable with previous reports in terms of electrochemical performance for FeOOH anode. The good electrochemical performance should be ascribed to the small particle size and nano-crystalline of FeOOH, as well as the good electronic conductivity of SWNT matrix.

关键词： FeOOH/SWNT composite electrochemical properties energy storage lithium batteries anode material

Microstructure and magnetic properties of electrodeposited Gd-Co alloy films

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Rare Metals 2008年第6期27卷 586-590页

作者： lai heng LI Jiaxin ZHOU Weichao ZHUANG Bin WU Xiaoping HUANG Zhigao Shool of Physics and Optoelectronics Technology Fujian Normal University Fuzhou 350007 China Department of Chemistry Fuzhou University Fuzhou 350002 China

Gd-Co alloy films were synthesized by potentiostatic electrolysis on Cu substrates in urea-acetamide-NaBr-KBr melt at 353 K. The electroreduction of Co^2＋ and Gd^3＋ was investigated by cyclic voltammetry. The reduction of Co^2＋ is an irreversible process. Gd^3＋ cannot be reduced alone, but it can be inductively co-deposited with Co^2＋. Both the Gd content and microstructure of the prepared Gd-Co alloy films can be controlled by the deposited potential. The content of Gd was analyzed using an inductively coupled plasma emission spectrometer （ICPES）, and the microstructure was observed by scanning electron micrograph （SEM）. The films were crystallized by heat-treatment at 823 K for 30 s in Ar atmosphere, and then were investigated by XRD. The hysteresis loops of the Gd-Co alloy films were measured by a vibrating sample magnetometer （VSM）. The experimental results reveal that the deposited Gd-Co alloy films are amorphous, while the annealing causes the samples to change from amorphous to polycrystalline, thus enhancing their magnetocrystalline anisotropy and coercivity. Moreover, the magnetic properties of the Gd-Co alloy films depend strongly on the Gd content.

关键词： electrodeposited films Gd-Co alloys surface microstructure crystalline phase magnetic properties

Room-temperature phonon-coupled single-photon emission in hexagonal boron nitride

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Science China(Physics,Mechanics & Astronomy) 2024年第5期67卷 109-114页

作者： Jia-Min lai Qing-Hai Tan Feilong Song Haonan Chang Yanpei Lv Xue-Lu Liu Jinghua Teng Weibo Gao Ping-heng Tan Jun Zhang State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing100083China Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education&Research Institute of Materials Science Shanxi Normal UniversityTaiyuan 030000China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore 637371Singapore Institute of Materials Research and Engineering(IMRE) Agency for ScienceTechnology and Research(A*STAR)Singapore 138634Singapore

Photon-lattice(phonon)coupling is fundamental to light-matter interaction,particularly when it reaches the quantum limit of the phonon-coupled single-photon emission,which holds great potential for quantum manipulation and quantum information ***,we report single defect state-phonon coupling in hexagonal boron nitride(h BN)at room *** ultrabroad spectrum of single-photon emissions can be achieved by selecting the excitation *** photoluminescence excitation spectroscopy,we observe single-phonon-assisted resonance-enhanced single-photon emission,along with multiple phonon replicas that herald the creation of phonon Fock *** also develop a transition model to gain insight into the physical process behind the single defect state-phonon *** work sets the stage for manipulating electron-phonon coupling state with single quantum-level precision at room temperature.

关键词： temperature phonon hexagonal

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SnO_2 nanospheres among GO and SWNTs networks as anode for enhanced lithium storage performances

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Journal of Energy Chemistry 2016年第3期25卷 445-449页

作者： Weiwei Wen Mingzhong Zou Qian Feng Jiaxin Li heng lai Zhigao Huang College of Physics and Energy Fujian Normal University and Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences

Conducting supporters of purified single-walled carbon nanotubes（SWNTs） and graphene oxide（GO）were used to confine pomegranate-structured Sn O2 nanospheres for forming SnO-GO-SWNT *** anode material for lithium ion batteries（LIBs）, this composite exhibits a stable and large reversible capacity together with an excellent rate capability. In addition, an analysis of the AC impedance spectroscopy has been used to confirm the enhanced mechanism for LIB performance. The improved electrochemical performance should be ascribed greatly to the reinforced synergistic effects between GO and SWNT networks, and their enhanced contribution of the conductivity. These results indicate that this composite has potential for utilization in high-rate and durable LIBs.

关键词： Lithium batteries SnO_2-GO-SWNT anodes Electrochemical performance Energy storage

Insights into the electron transfer mechanisms of peroxydisulfate activation by modified metal-free acetylene black for degradation of sulfisoxazole

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Chinese Chemical Letters 2024年第8期35卷 349-356页

作者： Chunxiu Yu Zelin Wu Hongle Shi Lingyun Gu Kexin Chen Chuan-Shu He Yang Liu heng Zhang Peng Zhou Zhaokun Xiong Bo lai State Key Laboratory of Hydraulics and Mountain River Engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China Sichuan Academy of Eco-Environmental Sciences Chengdu 610041China Sino-German Centre for Water and Health Research Sichuan UniversityChengdu 610065China

Herein,a modified metal-free acetylene black(MMF-AB)catalyst was synthesized by a simple solvothermal-calcination method and designed successfully to activate peroxodisulfate(PDS)for the degradation of sulfisoxazole(SIZ).Due to the doping of N,S and O metal-free elements,the modified catalyst showed excellent catalytic performance with 100%SIZ removal within 30 *** first-order reaction rate constants(evaluating catalytic efficiencies and activity)of MMF-AB(kobs=0.105 min^(−1))was 3 times higher than pure-AB(k_(obs)=0.029 min^(−1)).Interestingly,it was demonstrated that the reaction sys-tem is based on the transfer of electrons from SIZ to PDS to realize an electron-transfer-based mechanism by the evidence of premixing,electron paramagnetic resonance(EPR)spectroscopy,salt-bridge experi-ments and electrochemical *** introduction of recyclable filtration device solved the secondary pollution caused by the dispersion of the powdered catalyst in the treated water,which further proved the practicality and superiority of the MMF-AB catalyst.

关键词： Peroxydisulfate Sulfisoxazole Acetylene black Electrochemical Electron transfer

Interface Engineering on Constructing Physical and Chemical Stable Solid-State Electrolyte Toward Practical Lithium Batteries

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Energy & Environmental Materials 2024年第4期7卷 28-47页

作者： Honggang He Litong Wang Malek Al-Abbasi Chunyan Cao heng Li Zhu Xu Shi Chen Wei Zhang Ruiqing Li Yuekun lai Yuxin Tang Mingzheng Ge School of Textile and Clothing Nantong University School of Science Qingdao University of Technology Department of Biomedical Sciences City University of Hong Kong Institute of Applied Physics and Materials Engineering University of Macau College of Chemical Engineering Fuzhou University

Solid-state lithium batteries (SSLBs) with high safety have emerged to meet the increasing energy density demands of electric vehicles,hybrid electric vehicles,and portable electronic ***,the dendrite formation,high interfacial resistance,and deleterious interfacial reactions caused by solid-solid contact between electrode and electrolyte have hindered the commercialization of SSLBs.

关键词： dendrite formation high energy density interface instability interfacial resistance solid-state electrolyte

Teneligliptin mitigates diabetic cardiomyopathy by inhibiting activation of the NLRP3 inflammasome

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World Journal of Diabetes 2024年第4期15卷 724-734页

作者： Gu-Lao Zhang Yuan Liu Yan-Feng Liu Xian-Tao Huang Yu Tao Zhen-Huan Chen heng-Li lai Department of Cardiology Jiangxi Provincial People's HospitalThe First Affiliated Hospital of Nanchang Medical CollegeNanchang 330000Jiangxi ProvinceChina

BACKGROUND Diabetic cardiomyopathy(DCM),which is a complication of diabetes,poses a great threat to public *** studies have confirmed the role of NLRP3(NOD-like receptor protein 3)activation in DCM development through the inflammatory *** is an oral hypoglycemic dipeptidyl peptidase-IV inhibitor used to treat *** has recently been reported to have anti-inflammatory and protective effects on myocardial *** To examine the therapeutic effects of teneligliptin on DCM in diabetic *** Streptozotocin was administered to induce diabetes in mice,followed by treatment with 30 mg/kg *** Marked increases in cardiomyocyte area and cardiac hypertrophy indicator heart weight/tibia length reductions in fractional shortening,ejection fraction,and heart rate;increases in creatine kinase-MB(CK-MB),aspartate transaminase(AST),and lactate dehydrogenase(LDH)levels;and upregulated NADPH oxidase 4 were observed in diabetic mice,all of which were significantly reversed by ***,NLRP3 inflammasome activation and increased release of interleukin-1βin diabetic mice were inhibited by *** mouse cardiomyocytes were treated with high glucose(30 mmol/L)with or without teneligliptin(2.5 or 5μM)for 24 ***3 inflammasome *** in CKMB,AST,and LDH levels in glucose-stimulated cardiomyocytes were markedly inhibited by teneligliptin,and AMP(p-adenosine 5‘-monophosphate)-p-AMPK(activated protein kinase)levels were ***,the beneficial effects of teneligliptin on hyperglycaemia-induced cardiomyocytes were abolished by the AMPK signaling inhibitor compound *** Overall,teneligliptin mitigated DCM by mitigating activation of the NLRP3 inflammasome.

关键词： Diabetic cardiomyopathy Teneligliptin NLRP3 AMPK Interleukin-1β