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Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng Wang Zhou Ying Mo Biao Zheng Miaomiao Han Qin Zhong Wenwen Yang Peng Gao Lezhi Yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

Efficient and Stable Photoassisted Lithium‑Ion Battery Enabled by Photocathode with Synergistically Boosted Carriers Dynamics

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Nano-Micro Letters 2025年第3期17卷 440-454页

作者： Zelin Ma Shiyao Wang Zhuangzhuang Ma Juan Li Luomeng Zhao Zhihuan Li Shiyuan Wang Yazhou Shuang Jiulong Wang Fang Wang Weiwei Xia Jie Jian Yibo He Junjie Wang Pengfei Guo Hongqiang Wang State Key laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU)Xi’an 710072People’s Republic of China State Key laboratory of Solidification Processing School of Materials Science and Engineering DepartmentNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China State Key laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China Research and Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063People’s Republic of China Key laboratory of applied Surface and Colloid Chemistry Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringNational Ministry of EducationShaanxi Normal UniversityXi’an 710119People’s Republic of China

Efficient and stable photocathodes with versatility are of significance in photoassisted lithium-ion batteries(PLIBs),while there is always a request on fast carrier transport in electrochemical active *** work proposes a general approach of creating bulk heterojunction to boost the carrier mobility of photocathodes by simply laser assisted embedding of plasmonic *** employed in PLIBs,it was found effective for synchronously enhanced photocharge separation and transport in light charging ***,experimental photon spectroscopy,finite difference time domain method simulation and theoretical analyses demonstrate that the improved carrier dynamics are driven by the plasmonic-induced hot electron injection from metal to TiO_(2),as well as the enhanced conductivity in TiO2 matrix due to the formation of oxygen vacancies after Schottky *** from these merits,several benchmark values in performance of TiO2-based photocathode applied in PLIBs are set,including the capacity of 276 mAh g^(−1)at 0.2 A g^(−1)under illumination,photoconversion efficiency of 1.276%at 3 A g^(−1),less capacity and Columbic efficiency loss even through 200 *** results exemplify the potential of the bulk heterojunction strategy in developing highly efficient and stable photoassisted energy storage systems.

关键词： Photoassisted lithium-ion batteries Bulk heterojunction Carrier dynamics TiO2 nanofiber Plasmonic metal nanocrystals

Expert system for elucidation of structures of organic compounds——Structural generator of ESESOC-II

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Science China Chemistry 1995年第3期38卷 296-304页

作者：胡昌玉许禄 applied spectroscopy laboratory Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China

An expert system for the elucidation of the structures of organic compounds--ESESOC-IIhas been designed. It is composed of three parts: spectroscopic data analysis, structure generator, and evaluation of the candidate structures. The heart of ESESOC is the structure generator, as an integral part, which accepts the specific types of information, e.g. molecular formulae, substructure constraints, and produces an exhaustive and irredundant list of candidate structures. The scheme for the structural generation is given, in which the depth-first search strategy is used to fill the bonding adjacency matrix (BAM) and a new method is introduced to remove the duplicates.

关键词： expert system structure elucidation structure generator.

Er^(3+)/Yb^(3+)/Li^+/Zn^(2+):Gd_2(MoO_4)_3 upconverting nanophosphors in optical thermometry

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Journal of Rare Earths 2019年第3期37卷 242-247页

作者： Anita Kumari Lakshmi Mukhopadhyay Vineet Kumar Rai Laser and spectroscopy laboratory Department of Applied Physics Indian Institute of Technology (Indian School of Mines)

Er^(3+)-Yb^(3+)-Li^+:Gd_2(MoO_4)_3 and Er^(3+)-Yb^(3+)-Zn^(2+):Gd_2(MoO_4)_3 nanophosphors, synthesized by chemical co-precipitation technique were characterized through XRD,FESEM,dynamic light scattering(DLS),diffuse reflectance, photoluminescence, photometric and decay time analysis. The enhancement of about～28, ～149 and ～351 times in the green upconversion emission band is observed for the optimized Er^(3+)-Yb^(3+),Er^(3+)-Yb^(3+)-Li^+ and Er^(3+)-Yb^(3+)-Zn^(2+):Gd_2(MoO_4)_3 nanophosphors in comparison to the singly Er^(3+) doped nanophosphors. The electric dipole-dipole interaction is found to be responsible for the concentration quenching. The temperature dependent behaviour of the two green thermally coupled levels of the Er^(3+) ions based on the fluorescence intensity ratio technique was studied. The maximum sensor sensitivity ～38.7 × 10^(-3) K^(-1) at 473 K for optimized Er^(3+)-Yb^(3+)-Zn^(2+) codoped Gd_2(MoO_4)_3 nanophosphors is reported with maximum population redistribution ability～88% among the ~2H_(11/2) and ~4S_(3/2) levels.

关键词： Upconversion Phosphors Dynamic light scattering Non-lanthanide ions Optical thermometry Rare earths

raman spectroscopy of Laser-Trapped Microparticles——A Review

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Raman Spectroscopy of Laser-Trapped Microparticles——A Revi...

Active oxygen radical scavenging ability of water-soluble fullerenols

第二十届全国光散射学术会议（CNCLS20）

作者： W.Kiefer Institute for Physical and Theoretical Chemistry University of Würzburg eisingen laboratory for applied raman spectroscopy

＜正＞Arthur Ashkin received in 2018 the Nobel Prize in Physics [1] for the optical tweezers and their application to biological *** pioneering work started already in 1970 when he first demonstrated optical trapping and optical levitation of single microparticles [2].The application of these techniques to raman spectroscopy had been first introduced by Thurn and Kiefer in

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Chinese Science Bulletin 1997年第9期42卷 748-752页

作者： Sun, DY Zhu, YS Liu, ZY Liu, GZ Guo, XH Zhan, RY Liu, XY State Key laboratory of applied spectroscopy Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun China

THE bioactivity study of C60 and its relative derivatives is of considerable ***60 itself is a non-polar molecule and very difficult to dissolve in common polar solvents,its ap-plication in biochemistry field is greatly *** preparation of some water-solubleC60 derivatives will be *** found that a water-soluble C60 derivative,[HOCO-

关键词： C60 fullerenols active-oxygen-radical ESR spin trapping.

NMR titration and molecular model MOPAC calculation of protonation processes of two MRI ligands

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Chinese Journal of Chemistry 1998年第4期16卷 330-335页

作者：张善荣李欣宇刘卫东裴奉奎 laboratory of applied spectroscopy Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunJilin130022China

The protonation process of two DTPA bis(amide) derivatives, DTPA-BDMA and DTPA-BDEA, was studied by using 1H NMR titration and MOPAC calculation. Their protonation process was proposed in the order of the central amine, the terminal amines, the central carboxyl, the terminal carboxyl, the other terminal carboxyl and central amine. During the protonation of the terminal amine, them existed a large fraction of proton transfer from the central amine to the other terminal amine.

关键词： DTPA-BDMA DTPA-BDEA protonation process NMR and MOPAC

TiO_2 composite electron transport layers for planar perovskite solar cells by mixed spray pyrolysis with precursor solution incorporating TiO_2 nanoparticles

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Chinese Physics B 2018年第1期27卷 121-126页

作者：田嘉琪李红翠王海月郑博薛叶斌刘喜哲 Institute of Atomic and Molecular Physics Jilin Provincial Key Laboratory of Applied Atomic and Molecular SpectroscopyJilin University

Perovskite solar cells with planar structure are attractive for their simplified device structure and reduced hysteresis effect. Compared to conventional mesoporous devices, TiO2 porous scaffold layers are removed in planar devices. Then, compact TiO2 electron transport layers take the functions of extracting electrons, transporting electrons, and blocking holes. Therefore, the properties of these compact TiO2 layers are important for the performance of solar cells. In this work, we develop a mixed spray pyrolysis method for producing compact TiO2 layers by incorporating TiO2 nanoparticles with dif- ferent size into the precursor solutions. For the optimized nanoparticle size of 60 nm, a power conversion efficiency of 16.7% is achieved, which is obviously higher than that of devices without incorporated nanoparticles （9.9%）. Further in- vestigation reveals that the incorporation of nanoparticles can remarkably improve the charge extraction and recombination processes.

关键词： perovskite solar cell electron transport layer charge extraction recombination

Accurate all-electron calculation on the vibrational and rotational spectra of ground states for O2 and its ions

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Chinese Physics B 2019年第7期28卷 193-197页

作者： Qiao-Xia Wang Yu-Min Wang Ri Ma Bing Yan Key laboratory of applied Atomic and Molecular spectroscopy Jilin Province Institution of Atomic and Molecular PhysicsJilin University

The potential energy curves, spectroscopic constants, and low-lying vibration–rotation levels of ground-state O2 and its cation O2+ and anion O2- were calculated with the explicitly correlated multireference configuration interaction *** zeroth-order reference wavefunction was treated with the complete active space multiconfigurational self-consistent field method, in which the active space was carefully selected, and an additional molecular orbital πu was added into the full valence active *** electron correlation of the 1s core in the oxygen atom was considered in the *** Davidson correction on molecular energy was considered to account for higher electron *** relativistic effects, including the scalar relativistic effect and spin–orbit coupling, were considered in the computation of potential energy *** physical effects on the spectroscopic constants were *** low-lying levels of vibration–rotation spectra of O2 and its ions were determined based on the computed potential energy *** with available experiments were made and excellent agreement was obtained for the vibrational and rotational *** spectroscopic constants and vibration–rotation spectrum of O2-, which is sparse in experiments, were *** study will shed some light on further theoretical and experimental studies on these simple but important molecular systems.

关键词： O2 molecule/molecular ion explicitly correlated multireference configuration interaction spectroscopic constant vibration–rotation spectrum