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

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

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A low redox potential and long life organic anode material for sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 557-564页

作者： Zhi Li Yang Wei Kang Zhou Xin Huang Xing Zhou Jie Xu Taoyi Kong Junwei Lucas Bao Xiaoli Dong Yonggang Wang Department of Chemistry and Shanghai key laboratory of Molecular Catalysis and Innovative materials Institute of New Energy Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fudan University Department of Chemistry Boston College School of materials Science and Engineering Anhui University of Technology

Sodium-ion batteries （SIBs） with organic electrodes are an emerging research direction due to the sustainability of organic materials based on elements like C,H,O,and sodium ***,organic electrode materials for SIBs are mainly used as cathodes because of their relatively high redox potentials（>1 V）.Organic electrodes with low redox potential that can be used as anode are ***,a novel organic anode material （tetrasodium 1,4,5,8-naphthalenetetracarboxylate,Na4TDC） has been developed with low redox potential （hard carbon composite can further acquire improved capacity and cycling stability for 1200 cycles even with a high mass loading of up to 20 mg *** pairing with a thick Na3V2（PO4）3cathode (20.6 mg cm-2),the as-fabricated full cell exhibited high operating voltage （2.8 V）,excellent rate performance and cycling stability with a high capacity retention of 88.7% after 200 cycles,well highlighting the Na4TDC anode material for SIBs.

关键词： Organic anode material Low redox potential Composite anode Sodium-ion batteries

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HPHT Synthesis of Micron Grade Boron-Doped Diamond Single Crystal in Fe-Ni-C-B Systems

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Chinese Physics Letters 2008年第7期25卷 2667-2669页

作者：张和民臧传义李小雷马红安李尚升周升国郭伟贾晓鹏 Institute of materials Science and Engineering Henan Polytechnic University Jiaozuo 454000 national Lab of super hard materials Jilin University Changchun 130012

Micron grade boron-doped diamond crystals with octahedral morphology are successfully synthesized in a Fe-Ni- C-B system under high pressure and high temperature （HPHT）. The effects of the additive boron on synthesis conditions, nucleation and growth, crystal morphology of diamond are studied. The synthesized micron grade diamond crystals were characterized by optical microscope （OM）, scanning electron microscope （SEM）, x-ray diffraction （XRD） and Raman spectroscopy. The research results show that the V-shaped section of synthetic diamond moves downwards to the utmost extent due to 0.3a wt% （a is a constant.） boron added in the synthesis system. The crystal colour is black, and the average crystal size is about 25μm. The crystal faces of synthetic diamond are mainly （111） face. The synthesis of this kind of diamond is few reported, and it will have important and widely applications.

关键词： the power-law exponents precipitation durative abrupt precipitation change

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Structural Transition of Gd2O3：Eu Induced by High Pressure

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Chinese Physics Letters 2007年第1期24卷 158-160页

作者：陈海勇贺春元高春晓张家骅高世勇路红亮聂延光李冬妹阚世海邹广田 State key laboratory of super hard materials Jilin Ihliversity Changchun 130012 key laboratory of Excited State Processes Changchun Institute of Optics Fine ~lechanics and Physics Chinese Academy of Sciences Ghang-chun 130033

The structural transition of bulk and uano-size Gd2O3：Eu are studied by high pressure energy disperse x-ray diffraction （XRD） and high pressure photoluminescence. Our results show that in spite of different size of Gd2O3 particles, the cubic structure turns into a possible hexagonal one above 13.4 GPa. When the pressure is released, the sample reverses to the monoclinic structure. No cubic structure presents in the released samples. That is to say, the compression and relaxation of the sample leads to the cubic Gd2O3：Eu then turns into the monoclinic one.

关键词： OPTICAL diffraction PHOTOLUMINESCENCE PARTICLES HEXAGONS

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Visualization of the protective role of estrogen against female liver fibrosis via an ER viscosity NIR fluorescent probe

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Science China Chemistry 2025年第1期 360-368页

作者： Zheng Liu Changyu Zhang Zipeng Li Wanying Ma Jia Liu Xiang Xia Ning Xu Wen Sun Jianjun Du Jiangli Fan Xiaojun Peng State key laboratory of Fine Chemicals Dalian University of Technology Ningbo Institute of Dalian University of Technology

Endoplasmic reticulum(ER) viscosity has emerged as a new potential biomarker for hepatic fibrosis(HF). Herein, we report the first ER-targeting viscosity-responsive near-infrared(NIR) fluorescent probe HBT-PP for investigations of HF *** twisted intramolecular charge transfer(TICT) and the excited state intramolecular proton transfer(ESIPT) are combined to endow HBT-PP with the selective response towards viscosity(～62-fold) and a super large stokes shift(～320 nm). HBT-PP mainly targets organelle ER and is able to image the drug-or alcohol-induced viscosity elevation in living cells. Significantly,HBT-PP was successfully applied to visualize the gender difference in HF and the protective role of estrogen in restraining HF progression. Of note, after 10 min of stain with HBT-PP, HF lesions showed a stage-based response, indicating the potential of this probe in fast and early diagnosis of HF. These results clearly demonstrated the promising application of HBT-PP as a new tool for exploring ER viscosity-involved physiological and pathological processes.

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Study on growth of coarse grains of diamond with high quality under HPHT

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Chinese Science Bulletin 2009年第1期54卷 163-167页

作者： ZHOU ShengGuo ZANG ChuanYi MA HongAn LI XiaoLei ZHANG HeMin JIA XiaoPeng Institute of materials Science and Engineering Henan Polytechnic University Jiaozuo 454000 China national laboratory of super hard materials Jilin University Changchun 130012 China

The growth of coarse grains of diamond was observed with graphite as carbon source and Fe80Ni20 alloy powder as catalyst at HPHT in a China-type SPD 6×1670T cubic high-pressure apparatus with highly exact control system. To synthesize coarse grains of diamond crystal with high quality,ad-vanced indirect heat assembly,powder catalyst technology and catalyst with optimal granularity were used. Especially the nucleation of diamond and the growth rate were strictly controlled by the opti-mized synthesis craft. At last,diamond crystals (about 0.85 mm) in the perfect hex-octahedron shape were successfully synthesized at ～5.4 GPa and ～1360℃ in 60 min. The characteristic of crystal growth with powder catalyst technology under HPHT was discussed. The results and techniques might be useful for production of coarse grains of diamond.

关键词：金刚石石墨 HPHT 催化剂晶体

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Synergistic improvement of damping capacity and mechanical properties of magnesium alloy prepared with UHP technology

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Journal of Rare Earths 2024年第12期42卷 2279-2284页

作者： Dan Wang Peizhao Huang Ruizhi Wu Hailiang Huang Tao Zhong Cunwei Zou Yaqiang Song key laboratory of New Carbon-based Functional and super-hard materials of Heilongjiang Province School of Physics and Electronic EngineeringMudanjiang Normal University key laboratory of superlight materials and Surface Technology Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University Nanning College for Vocational Technology

The contradictory relationship between the damping capacity and strength of metals, governed by dislocation mechanisms, poses a challenge in improving simultaneously through dislocation strengthening. Accordingly, exploring novel methods to synergistically enhance mechanical properties and damping capacity is designated as a focal research subject in recent years. The study at hand aims to tackle this challenge through the manipulation of microstructures in Mg-Y-Er-Zn-Zr alloy via ultra-high pressure(UHP) heat treatment, yielding Mg-based alloys of exceptionally lightweight with outstanding damping and mechanical characteristics. After UHP, a significant refinement in the alloy's grain size is observed, with the average grain size decreasing from 114 to 23 μm, accompanied by substantial introduction of dislocations into the matrix, along with the emergence of twin within the matrix. The tensile strength of M-6GPa-1000 alloy subjected to UHP treatment achieves 326 MPa, demonstrating a 95% increase compared to ordinary heat treatment alloys while maintaining an elongation of 11.9%.Additionally, the damping capacity value Q-1 of M-6GPa-1000 alloy treated with UHP during the low-strain zone is 0.03, exhibiting a threefold increase compared to that of the conventionally heat-treated alloy. Through UHP treatment, the alloy's microstructure is regulated, achieving a synergistic enhancement of strength and damping capacity. The study comprehensively analyzes the synergistic improvement of mechanical and damping characteristics in the alloy. The proposed UHP technology holds significant potential for the fabrication of advanced Mg-Re components.

关键词： Mg-RE alloy Ultra-high pressure treatment Mechanical properties Damping capacity Rare earths

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Effect of additive boron on type-Ib gem diamond single crystals synthesized under HPHT

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Chinese Science Bulletin 2010年第8期55卷 677-679页

作者： MA LiQiu MA HongAn XIAO HongYu LI ShangSheng LI Yong JIA XiaoPeng national key laboratory of super hard materials Jilin University Changchun 130012 China Institute of Material Science and Engineering Henan Polytechnic University Jiaozuo 454000 China

The boron-doped type-Ib gem diamond crystals were synthesized successfully by adding amorphous boron into a system of graphite and Kovar catalyst under high pressure and high temperature (HPHT).The effect of additive boron on type-Ib gem diamond was extensively studied including the growth characteristic,morphology and nitrogen *** synthesized boron-doped type-Ib gem diamond crystals were characterized by optical microscope (OM),scanning electron microscope (SEM) and infrared spectrometer (IR).The results show that the growth region of the {111} face becomes wide,whereas the growth region of the {100} face becomes narrow and nearly disappears as increasing additive boron in the *** crystal will be opaque and imperfect,and the concentration of nitrogen will be decreased when the boron atoms are incorporated into gem diamond *** techniques are very important and will be widely applied.

关键词：宝石级金刚石高温高压硼原子添加剂金刚石单晶合成类型金刚石晶体

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A rolled Mg-8Al-0.5Zn-0.8Ce alloy with high strength-ductility synergy via engineering high-density low angle boundaries

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Journal of Magnesium and Alloys 2022年第10期10卷 2889-2900页

作者： Xiao Ma Min Zha Siqing Wang Yi Yang Hailong Jia Dan Gao Cheng Wang Huiyuan Wang key laboratory of Automobile materials of Ministry of Education&School of materials Science and Engineering Nanling CampusJilin UniversityNo.5988 Renmin StreetChangchun 130025PR China State key laboratory of super hard materials Jilin UniversityChangchun130012PR China International Center of Future Science Jilin UniversityChangchun 130012PR China

Developing low-cost rolled Mg alloys with both high strength and ductility is desirable,while the improved strength is generally accompanied with decreased ***,by using rotated hard-plate rolling(RHPR)with a total thickness reduction of~85%,we obtained a Mg-8Al-0.5Zn-0.8Ce(wt.%,AZ80-0.8Ce)alloy with a high strength-ductility synergy,i.e.,the yield strength(YS),ultimate tensile strength(UTS)and elongation-to-failure(EF)are~308 MPa,~360 MPa and~13.8%,*** reveals that the high YS is mainly originated from grain boundary strengthening(~212 MPa),followed by dislocation strengthening(~43 MPa)and precipitation hardening(~25 MPa).It is found that a relatively homogeneous fine grain structure containing a large fraction(~62%)of low angle boundaries(LABs)is achieved in the RHPRed alloy,which is benefit for the high tensile EF *** demonstrates that LABs have important contributions to strengthening and homogenizing tensile deformation process,leading to the simultaneous high strength and high *** work provides a new insight for fabrication of low-cost high performance Mg alloys with an excellent strength-ductility synergy.

关键词： Mg-Al-Zn alloys Rolling Strengthening mechanism Microstructure Strength-ductility synergy

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Generalized stability criterion for controlling solidification segregation upon twin-roll casting

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Journal of materials Science & Technology 2023年第3期134卷 163-177页

作者： Pan Wu Yubing Zhang Jiaqi Hu Shaojie Song Yong Li Huiyuan Wang Guo Yuan Zhaodong Wang Shizhong Wei Feng Liu State key laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Analytical and Testing Center Northwestern Polytechnical UniversityXi’an 710072China State key laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China State key laboratory of super hard materials Jilin UniversityChangchun 130012China national Joint Engineering Research Center for Abrasion Control and Molding of Metal materials Henan University of Science and TechnologyLuoyang 471003China

Macro-and micro-segregation formed upon twin-roll casting(TRC)can be inherited from sub-rapid solid-ification to solid-state transformation,even to plastic deformation,thus deteriorating drastically mechan-ical properties of as-produced thin *** many works focusing mainly on controlling fields of thermal,concentration and convection have been reported,how to control artificially and quantitatively the segregation using a theoretical connection between processing parameters and solidification models,has not been realized,*** it,a systematical framework integrating non-equilibrium dendritic growth and overall solidification kinetics with the TRC parameters,was constructed applying a general-ized stability(GS)conception deduced from transient thermodynamic driving force△G^(t)and transient ki-netic energy barrier Q_(eff)^(t)evolving upon *** from this framework considering synergy of thermodynamics and kinetics(i.e.,thermo-kinetic synergy),a criterion of high△G^(t)-high GS guaranteed that the macro(i.e.,the centerline)and the micro(i.e.,the edge)segregation can be suppressed by in-creasing△G^(t)and GS at the beginning and the ending stage of sub-rapid solidification,*** typical thermo-kinetic combination producing the microstructure can be inherited into the plastic de-formation,as reflected by corresponding strength-ductility *** work realized quantitative controlling of TRC by a theoretical connection between processing parameters and solidification models,where,an optimization for sub-rapid solidification segregation using the GS conception including△G^(t)and Q_(eff)^(t)has been performed.

关键词： Segregation Sub-rapid solidification Generalized stability Twin-roll casting Thermo-kinetics

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