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Progress of solid electrolytes and the Electrochemical Sensors

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Journal of Materials Science & Technology 1997年第3期13卷 173-178页

作者： Yanruo HONG(National Lab. on solid electrolytes and metallurgical testing techniques, University of Science and Technology beijing,beijing 100083, china) National Lab. on solid electrolytes and metallurgical testing techniques University of Science and Technology Beijing Beijing 100083 China

Four types of solid state electrochemical sensors and their general principles are introduced in the paper. The novel type-IV sensors developed in the last few years are emphasized to study hereafter. The ways to design new electrochemical sensors and the directions to develop new solid electrolytes for new electrochemical sensors are also discussed.

关键词： li Ba Progress of solid electrolytes and the Electrochemical Sensors Wang

A Novel Electrochemical Oxygen Sensor for Determination of Ultra-low Oxygen Contents in Molten Metal

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Journal of University of Science and Technology beijing 2001年第2期8卷 137-140页

作者： Jialin Sun, Congjin Jin, liansheng li, Yanruo Hong (National laboratory on solid electrolytes and metallurgical testing techniques, University of Science and Technology beijing, beijing 100083, china) Univ Sci & Technol beijing Natl Lab Solid Electrolytes & Met Testing Tech Beijing 100083 Peoples R China

A novel electrochemical oxygen sensor has been developed by using La beta -Al2O3 as solid electrolyte and Cr+Cr2O3 as reference electrode. The sensor not only can be used as normal oxygen sensor but also as an ultra-low oxygen sensor. Especially, it is very sensitive to measure ultra-low oxygen in molten metal. For estimating the accuracy of La beta -Al2O3 oxygen sensor, two series of oxygen activities in molten iron at different oxygen contents and different temperature were measured by both La beta -Al2O3 oxygen sensor and ZrO2 oxygen sensor. The theoretical values of oxygen activities in molten iron (3.30%C, in mass fraction) at 1723K and 1745K were also evaluated for comparing the measuring results of two sensors. At last, the error of measurement for La beta -Al2O3 oxygen sensor was discussed too.

关键词： chemical sensor oxygen sensor ultra-low oxygen sensor La beta-Al2O3 solid electrolyte

Influence of Conductivity of Slag on Decarburization Reaction

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International Journal of Minerals,Metallurgy and Materials 1998年第1期12卷 20-22页

作者： Xionggang Lu Fushen li lifen li Kouchih Chou (laboratory on solid electrolytes and metallurgical testing techniques, University of Science and Technology beijing, Beijin 100083, china) laboratory on solid electrolytes and metallurgical testing techniques University of Science and Technology Beijing Beijing 100083 China

By altering the electrochemical properties of slag, the decarburization reaction of Fe3+-based slag withFe-C droplet was studied. The results showed that a lot of free electrons and holes exist in the slag containing transition metal oxides (such as TiO2 and Fe2O3). So electronic conduction in the slag increases. Finally, it led to the increment of the decarburization reaction rate between slag and Fe-C droplet, and mass fraction of carbon remaining indroplet decreases to a lower level.

关键词： smelt slag electronic conductivity decarburization reaction

Kinetics of Oxidation for β-Sialon in Diphase β-Sialon/Al_2O_3 Composite

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Journal of Materials Science & Technology 1999年第1期15卷 21-24页

作者： Youfen li Yanruo HONG XangChong ZHONG and Tingshou li(National laboratory on solid electrolytes and metallurgical testing techniques, University of Science & Technologybeijing, beijing 100083, china) National laboratory on solid electrolytes and metallurgical testing techniques University of Science and Technology Beijing Beijing 100083 China

Non-isothermal kinetic research has been carried out on oxidation behavior of β-Sialon in diphaseβ-Sialon/Al_2O_3 composite at high temperatures. A kinetic formula is established for non-isothermal oxidation process of β-Sialon. The rate of oxidation process is controlled by chemicalreaction at the initial stage and then by diffusion. The apparent activation energies and appar-ent rate constants at different temperatures are determined by treating TG data of the overallprocess.

关键词： Al Kinetics of Oxidation for Sialon/Al2O3 Composite

Slag-Resistance of MgAlON Spinel

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International Journal of Minerals,Metallurgy and Materials 2000年第2期14卷 96-98页

作者： Chengji Deng Yanruo Hong Xiangchong Zhong Jialin Sun(State laboratory on solid electrolytes and metallurgical testing techniques, University of Science and Technology beijing, Bejing100083, china) Univ Sci & Technol beijing State Lab Solic Electrolytes & Met Testing Tech Beijing 100083 Peoples R China

The slag-resistance and microstructural changes after the slag tests of MgAlON spinel containing different amount of nitrogenwere studied by means of crucible slag-resistant experiment, SEM and EDS in the work. The results show that the slag-resistance ofMgAlON is dependent on the nitrogen content, and the optimum amount is 2.88%. The strUcture is not changed although the grains havebeen permeated by some silicon, calcium and iron. A glass phase which contained nitrogen formed in the metaInorphic layeL The glasscan driprove the ability of the slag-resistance of MgAlON because of its higher viscosity.

关键词： MgAlON spinel slag resistance, refractory microstructure composite

Sintering Behavior and Microstructure of diphasic β-Sialon /Al_2O_3 Composites

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International Journal of Minerals,Metallurgy and Materials 1997年第4期11卷 34-38页

作者： li Youfen HONG Yanruo ZHONG Xiangchong li Tingshou(National laboratory on solid electrolytes and metallurgical testing techniques, USTB, beijing 100083, china)

Six compositions with different ratio of β-Sialon/Al2O3 were synthesized from Al2O3, Si3,N4 and SiO2 by sintering with 3%Y2O3(mass fraction) as addition under the cover with powders of SiC+C and at nitrogen atmosphere. Theeffects of atmosphere, sintering temperature and composition on the sintering behavior were studied. The results showedthat the composites reached the best sintering behavior with the highest density about 92% at 1 650℃ under the weakreduction atmosphere. Finally the relative density of diphasic β-Sialon and p-Sialon/Al2O3 composites were studied andpredicted using ANN (Artificial Neural Networks) method and the results were experimental examined by fore randomsamples.

关键词： β-Sialon sintering behavior microstructure ANN

Sintering Caβ″/β/α-Al_2O_3 High Temperature Oxygen Sensor

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Journal of Materials Science & Technology 1995年第5期11卷 345-348页

作者： Yanruo HONG liansheng li and Fengge ZHANG(National laboratory on solid electrolytes and metallurgical Measurements, University of Science and Technology beijing, beijing, 100083, china)(To whom correspondence should be addressed) beijing Univ of Science and Technology Beijing China

An extended-life and ultra-low oxygen sensor has been fabricated by using polycrystalline Caβ″/β/α-Al2O3 as a solid electrolyte. Five reference electrodes CaO+O2, Caβ″/β/α-Al2O3 (powder)+O2,Cr+Cr2O3, Nb+NbO and Mo+MoO2 were tested in order to select a better reference electrode for this sensor. The limit of determining oxygen activity and the extended-life of the sensor were also tested in this study.

关键词： Al2O3 High Temperature Oxygen Sensor Sintering Ca Cr

PDOL-Based solid Electrolyte Toward Practical Application:Opportunities and Challenges

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Nano-Micro Letters 2024年第7期16卷 109-141页

作者： Hua yang Maoxiang Jing li Wang Hong Xu Xiaohong Yan Xiangming He Institute for Advanced Materials School of Materials Science and EngineeringJiangsu UniversityZhenjiang 212013People’s Republic of China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084People’s Republic of China

Polymer solid-state lithium batteries(SSLB)are regarded as a promising energy storage technology to meet growing demand due to their high energy density and *** conductivity,interface stability and battery assembly process are still the main challenges to hurdle the commercialization of *** the main component of SSLB,poly(1,3-dioxolane)(PDOL)-based solid polymer electrolytes polymerized in-situ are becoming a promising candidate solid elec-trolyte,for their high ion conductivity at room temperature,good battery elec-trochemical performances,and simple assembly *** review analyzes opportunities and challenges of PDOL electrolytes toward practical application for polymer *** focuses include exploring the polymerization mechanism of DOL,the performance of PDOL composite electrolytes,and the application of ***,we provide a perspective on future research directions that need to be emphasized for commercialization of PDOL-based electrolytes in *** exploration of these schemes facilitates a comprehensive and profound understanding of PDOL-based polymer electrolyte and provides new research ideas to boost them toward practical application in solid-state batteries.

关键词： Poly(1,3-dioxolane) solid electrolyte Polymerization mechanism Composite electrolyte Practical application

Highly Integrated Perovskite Solar Cells-Based Photorechargeable System with Excellent Photoelectric Conversion and Energy Storage Ability

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Energy & Environmental Materials 2024年第5期7卷 336-344页

作者： Jinxin Bi Shaoyin li Dongtao liu Bowei li Kai yang Ming Xu Chaopeng Fu Yunlong Zhao Wei Zhang Advanced Technology Institute University of Surrey School of Materials Science and Engineering Shanghai Jiao Tong University Dyson School of Design Engineering Imperial College London National Physical laboratory

Perovskite solar cells have emerged as a promising technology for renewable energy generation. However, the successful integration of perovskite solar cells with energy storage devices to establish high-efficiency and long-term stable photorechargeable systems remains a persistent challenge. Issues such as electrical mismatch and restricted integration levels contribute to elevated internal resistance, leading to suboptimal overall efficiency (ηoverall) within photorechargeable systems. Additionally, the compatibility of perovskite solar cells with electrolytes from energy storage devices poses another significant concern regarding their stability. To address these limitations, we demonstrate a highly integrated photorechargeable system that combines perovskite solar cells with a solid-state zinc-ion hybrid capacitor using a streamlined process. Our study employs a novel ultraviolet-cured ionogel electrolyte to prevent moisture-induced degradation of the perovskite layer in integrated photorechargeable system, enabling perovskite solar cells to achieve maximum power conversion efficiencies and facilitating the monolithic design of the system with minimal energy loss. By precisely matching voltages between the two modules and leveraging the superior energy storage efficiency, our integrated photorechargeable system achieves a remarkable ηoverallof 10.01%while maintaining excellent cycling stability.

关键词： ionogel electrolyte perovskite solar cells photorechargeable system self-powered electronics zinc-ion hybrid capacitor