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Alternating-Current Transport Properties in Nd0.7Sr0.3MnO3 Ceramic with Secondary Phases

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Chinese physics Letters 2012年第7期29卷 226-229页

作者：陈顺生杨昌平罗晓婧 Medvedeva I V School of Mathematics and physics Hubei Polytechnic UniversityHuangshi 435003 Faculty of physics and Electronic Technology Hubei UniversityWuhan 430062 institute of metal physics Ural Division of the Russian Academy of SciencesEkaterinburg 620219

Nd0.7 Sr0.3MnO3 ceramics with secondary phases were prepared by ball-milling and post heat- treatment at 1623 K for 3,7 and 13h,*** results from x-ray diffraction and energy dispersed spectroscopy show that some secondary phases are introduced and grow gradually with sintering *** secondary phases have significant effects on the ac *** all the samples,the real part of impedance (Zr) decreases with increasing frequency and the Zr peak moves to a higher ***,for a given frequency the Zr peak decreases with sintering ***,for samples B and C which were sintered for a longer time than sample A,an additional Zr peak appears at a higher temperature and gradually increases with sintering *** reposition of trapped charges in phase/grain boundaries or secondary phases is supposed to be responsible for the unusual relaxation process.

关键词： ceramics relaxation Phase

Understanding the battery safety improvement enabled by a quasi-solid-state battery design

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Chinese physics B 2022年第11期31卷 36-41页

作者：甘露雨陈汝颂禹习谦李泓 Beijing Advanced Innovation Center for Materials Genome Engineering Institute of PhysicsChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Beijing Frontier Research Center on Clean Energy Huairou DivisionInstitute of PhysicsChinese Academy of SciencesBeijing 101400China

The rapid development of lithium-ion batteries(LIBs)is faced with challenge of its safety bottleneck,calling for design and chemistry *** the proposed strategies,the development of solid-state batteries(SSBs)seems the most promising solution,but to date no practical SSB has been in large-scale *** safety performance of SSBs is also *** this article,a brief review on LIB safety issue is made and the safety short boards of LIBs are emphasized.A systematic safety design in quasi-SSB chemistry is proposed to conquer the intrinsic safety weak points of LIBs and the effects are accessed based on existing *** is believed that a systematic and targeted solution in SSB chemistry design can effectively improve the battery safety,promoting larger-scale application of LIBs.

关键词： battery safety thermodynamics kinetics solid-state batteries

Low-cost all-iron flow battery with high performance towards long-duration energy storage

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Journal of Energy Chemistry 2022年第10期31卷 445-451,I0011页

作者： Xiaoqi Liu Tianyu Li Zhizhang Yuan Xianfeng Li division of Energy Storage Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese academy of sciences Beijing 100049China

Long duration energy storage(LDES)technologies are vital for wide utilization of renewable energy sources and increasing the penetration of these technologies within energy ***,we propose a low-cost alkaline all-iron flow battery by coupling ferri/ferro-cyanide redox couple with ferric/ferrous-gluconate complexes redox *** designed all-iron flow battery demonstrates a coulombic efficiency of above 99%and an energy efficiency of~83%at a current density of80 m A cm^(-2),which can continuously run for more than 950 *** importantly,the battery demonstrates a coulombic efficiency of more than 99.0%and an energy efficiency of~83%for a long duration(~12,16 and 20 h per cycle)charge/discharge *** from the low cost of iron electrolytes,the overall cost of the all-iron flow battery system can be reached as low as$76.11 per k Wh based on a10 h system with a power of 9.9 k *** work provides a new option for next-generation cost-effective flow batteries for long duration large scale energy storage.

关键词： Long-duration energy storage All-iron flow battery Iron-based complexes High performance Gluconate

Brightening thiocyanate-anion layered perovskite through internal stress modulated nano phase segregation

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Nano Research 2023年第4期16卷 5533-5540页

作者： Yiming Li Jiangjian Shi Huijue Wu Yanhong Luo Dongmei Li Qingbo Meng Key Laboratory for Renewable Energy Chinese Academy of SciencesBeijing Key Laboratory for New Energy Materials and DevicesInstitute of PhysicsChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Huairou division Institute of PhysicsChinese Academy of SciencesBeijing 101400China Songshan Lake Materials Laboratory Dongguan 523808China

Thiocyanate-anion(SCN−)two-dimensional(2D)layered perovskite with internal stress-controlled nano phase segregation has been firstly demonstrated as a promising material system for luminescence *** interesting energy band structure is found as well as charge transfer process caused by nano phase segregation,which provide an alternative route to overcome the indirect-bandgap luminescence limit of SCN layered *** is revealed that,within the SCN layered framework,the segregated nano phases exist in a quantum well form,possessing much higher carrier localization and second-order radiative recombination *** the help of internal stress modulation,these advantages can be significantly enhanced and finally contribute to high luminescence performances in visible-red *** work provides more potential opportunities for 2D layered perovskite materials in the future optoelectronic applications.

关键词： two-dimensional perovskite internal stress thiocyanate anion phase segregation luminescence

Experimental and ab initio study of Ba_(2)Na_(3)(B_(3)O_(6))_(2)F stability in the pressure range of 0–10 GPa

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International Journal of Minerals,metallurgy and Materials 2023年第9期30卷 1846-1854页

作者： Nursultan E.Sagatov Tatyana B.Bekker Yulia G.Vinogradova Alexey V.Davydov Ivan V.Podborodnikov Konstantin D.Litasov Sobolev institute of Geology and Mineralogy Siberian Branch of Russian Academy of SciencesNovosibirsk 630090Russia Department of Geology and Geophysics Novosibirsk State UniversityNovosibirsk 630090Russia Research and Development Department Novosibirsk State University of ArchitectureDesign and Arts(NSUADA)Novosibirsk 630099Russia Vereshchagin institute for High Pressure physics Russian Academy of SciencesTroitsk 108840Russia Fersman Mineralogical Museum Russian Academy of SciencesMoscow 119071Russia

Both numerical and experimental studies of the stability and electronic properties of barium–sodium metaborate Ba_(2)Na_(3)(B_(3)O_(6))_(2)F(P63/m) at pressures up to 10 GPa have been carried out. Electronic-structure calculations with HSE06 hybrid functional showed that Ba_(2)Na_(3)(B_(3)O_(6))_(2)F has an indirect band gap of 6.289 eV. A numerical study revealed the decomposition of Ba_(2)Na_(3)(B_(3)O_(6))_(2)F into the BaB_(2)O_(4),Na BO_(2), and NaF phases above 3.4 GPa at 300 K. Subsequent high-pressure high-temperature experiments performed using ‘Discoverer-1500’DIA-type apparatus at pressures of 3 and 6 GPa and temperature of 1173 K confirmed the stability of Ba_(2)Na_(3)(B_(3)O_(6))_(2)F at 3 GPa and its decomposition into BaB_(2)O_(4), NaBO_(2), and NaF at 6 GPa, which was verified by energy-dispersive X-ray analysis and Raman spectroscopy. The observed Raman bands of the Ba_(2)Na_(3)(B_(3)O_(6))_(2)F phase were assigned by comparing the experimental and calculated spectra. The experimental Raman spectra of decomposition reaction products obtained at 6 GPa suggest the origin of a new high-pressure modification of barium metaborate BaB_(2)O_(4).

关键词： density functional theory phase stability borate high pressure Raman spectroscopy

Bromine-Graphite Intercalation Enabled Two-Electron Transfer for a Bromine-Based Flow Battery

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Transactions of Tianjin University 2022年第3期28卷 186-192页

作者： Yue Xu Congxin Xie Xianfeng Li division of Energy Storage Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese academy of sciences Beijing 100049China

Br_(2)/Br^(−)is a promising redox couple in fl ow batteries because of its high potential,solubility,and low ***,the reaction between Br^(−)and Br_(2)only involves a single-electron transfer process,which limits its energy ***,a novel two-electron transfer reaction based on Br^(−)/Br^(+) was studied and realized through Br^(+) intercalation into graphite to form a bromine-graphite intercalation compound(Br-GIC).Compared with the pristine Br^(−)/Br_(2)redox pair,the redox potential of Br intercalation/deintercalation in graphite is 0.5 V higher,which has the potential to substantially increase the energy *** erent from Br_(2)/Br^(−)in the electrolyte,the diff usion rate of Br intercalation in graphite decreases with increasing charge state because of the decreasing intercalation sites in graphite,and the integrity of the graphite structure is important for the intercalation *** a result,the battery can continuously run for more than 300 cycles with a Coulombic effi-ciency exceeding 97%and an energy effi ciency of approximately 80%at 30 mA/cm^(2),and the energy density increases by 65%compared with Br^(−)/Br_(2).Combined with double-electron transfer and a highly reversible electrochemical process,the Br intercalation redox couple demonstrates very promising prospects for stationary energy storage.

关键词： Flow battery Two-electron transfer Bromine-graphite intercalation Bromine

Regimes of near-stoichiometric hydrogen/air combustion under reciprocating engine conditions

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Journal of Zhejiang University-Science A(Applied physics & Engineering) 2022年第10期23卷 838-844页

作者： Anna E.SMYGALINA Alexey D.KIVERIN Joint institute for High Temperatures of the russian academy of sciences Moscow 125412Russia

1Introduction Hydrogen/air combustion is a problem both in respect of its fundamental science and in the use of hydrogen as a possible substitute for traditional hydrocarbon *** is now a generally agreed approach to the use of hydrogen as an addition to traditional fuels(He et al.,2017)but the use of hydrogen as a main fuel has been studied much less because of the substantially unresolved problems for effective hydrogen production(Liu et al.,2020).It is worth noting that the use of hydrogen as a main fuel may be primarily applied not only for internal combustion engines needed for transport(Balat,2008),but also for those serving as drives for electrogenerators within stationary power stations(Balat,2008;Ivanov et al.,2018).

关键词： hydrogen combustion primarily

Author Correction: ITO-free silicon-integrated perovskite electrochemical cell for light-emission and light-detection

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Opto-Electronic Advances 2024年第3期7卷 50-50页

作者： Maria Baeva Dmitry Gets Artem Polushkin Aleksandr Vorobyov Aleksandr Goltaev Vladimir Neplokh Alexey Mozharov Dmitry VKrasnikov Albert GNasibulin Ivan Mukhin Sergey Makarov Alferov University Khlopina 8/3St.Petersburg 194021Russia Department of physics and Engineering ITMO UniversityLomonosova 9St.Petersburg 197101Russia institute of Automation and Control Processes(IACP) Far Eastern Branch of Russian Academy of SciencesUlitsa Radio 5Vladivostok 690041Primorsky KraiRussia Peter the Great St.Petersburg Polytechnic University Polytechnicheskaya 29St.Petersburg 195251Russia Skolkovo institute of Science and Technology Nobel 3Moscow 121205Russia Qingdao Innovation and Development Center Harbin Engineering UniversityQingdao 266000China.

Correction to:Opto-Electronic Advances https://***/10.29026/oea.2023.220154 published online 26 April 2023 After the publication of this article1,it was brought to our attention that calculations of the PeLEC device elec-troluminescent(EL)efficiency contained a mistake,leading to an inaccurate quantity *** device’s maxim-um EL efficiency constitutes not‘~120 klm/W’but‘4.3 lm/W’*** details are listed below.

关键词： value. perovskite listed

A review on magneto-optical ceramics for Faraday isolators

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Journal of Advanced Ceramics 2023年第5期12卷 873-915页

作者： Lixuan Zhang Dianjun Hu Ilya LSnetkov Stanislav Balabanov Oleg Palashov Jiang Li Transparent Ceramics Research Center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China institute of Applied physics of the russian academy of sciences Nizhny Novgorod 603950Russia Lobachevsky State University of Nizhny Novgorod Nizhny Novgorod 603950Russia G.G.Devyatykh institute of Chemistry of High-Purity Substances Russian Academy of SciencesNizhny Novgorod 603951Russia

As a promising magneto-optical(MO)material applied in Faraday isolators,magneto-optical ceramics possess excellent comprehensive properties and have attracted much attention these ***,we review the fabrication and properties of magneto-optical ceramics including garnet,sesquioxide,and A_(2)B_(2)O_(7) *** of the ceramics have been proved to possess applicable performance,while further studies are still needed for most of the magneto-optical *** at the application for isolators,the research status,existing problems,and development trends of magneto-optical ceramics are shown and discussed in this review.

关键词： magneto-optical(MO)ceramics Faraday isolators optical quality thermo-optical effects