Research Progress in Antimony-Based Sodium-Ion Battery Anode Materials
Sodium-ion batteries are considered as one of the most promising alternatives to lithium-ion batteries due to their high energy density and abundant sodium resources. The alloy-typed material antimony has recently attracted significant attention as an anode material for sodium-ion batteries because of its high theoretical capacity and appropriate redox potential. This paper mainly introduces the research status of antimony-based sodium ion battery anode materials such as antimony, antimony/carbon composites, antimony alloys, antimony oxides, antimony sulfides and other compounds of antimony.
Optimization of Chemistry Experiment Course System and Reform of Teaching Mode in Application-Oriented College
Based on the requirements of the talent cultivation mode of applied college, combining with the actual situation of our college and many years of front-line teaching experience, the experiment curriculum system of application-oriented college was designed and optimized from three aspects, such as experiment course content setting, teaching method and performance evaluation. Finally, a new experiment teaching mode was explored and a new experiment course system named "four-in-one, three-stage, four levels" was built, at the same time, a "visualization" teaching mode and "process quality evaluation" system of "multi-weighted" were introduced to the present experiment teaching process and performance evaluation system, respectively.
Discussion and Practice of Penetrating Scientific Spirit in Inorganic Chemistry Teaching
Inorganic chemistry is one of the important courses for the university freshmen to learn advanced chemistry knowledge and to build scientific attitude. In the teaching process of inorganic chemistry, we practiced to penetrate the scientific spirit to the students in experimental class. Following the history of battery materials, the case learning method was adopted to lead students to think and learn, while the pioneering, exploring and innovating behavior of scientific spirit was penetrated to them at the same time. This progress would have positive influence on the students' scientific thought and scientific behavior. Moreover, the students' interests for exploring truth and pursuing science were also inspired.
Application of Tenua Program in Calculation of Radioactive Decay
With the help of Tenua, a program of chemical kinetics simulation, we introduced the application of radioactive decay simulations in the radiochemistry course. Accordingly, the computational models for the consecutive decay, branched decay and complex decay chain were established. These simulations provide a vivid form to present the theoretical calculations, which can help the students understand the relevant knowledge and enrich modern teaching methodology.
Applications of STSE Concept in Classroom and Experiment Teaching of Physical Chemistry
Teaching and Management Modes for Chemical Engineering Experiment Course
Application of Thermodynamic Fundamentals in Synthesis of Fe/Fe3O4 Nanomagnetic Materials
This paper mainly discussed the basic principle and criterion of thermodynamics, and how to judge change direction and limit with the Gibbs free energy judgment. And the thermodynamic properties were studied in detail in the synthesis process of Fe/Fe3O4nanomagnetic materials. It can be concluded that Fe2+ ions can be used as starting materials to synthesize Fe/Fe3O4 magnetic materials by disproportionation reaction.
Improvement of Preparing Experiment of Basic Copper Carbonate
Based on the reaction principle of copper sulfate and ammonia, this paper proposed an improvement of preparing experiment of the basic copper carbonate taking copper sulfate (CuSO4) and sodium carbonate (Na2CO3) as the reactance as following, adding few drops of ammonia into the CuSO4 solution and heating. On the basis of improvement, this paper also discussed the effect of molar ratio CuSO4 to Na2CO3 by TG graphs and XRD. The results showed the green samples has been seen soon when molar ratio CuSO4 to Na2CO3 was 1.0~1.6.The samples was Cu2(OH)2CO3. After the improvement, the experiment appeared to be less time consuming, easy to operate, the color change was obvious and the experimental success rate became high.
College Chemistry Experiment: Preparation of Tin Oxideby by Hydrothermal Method
A college chemistry experiment, preparation of tin oxide by hydrothermal method was introduced in this paper. The particles were prepared from the starting materials tin chloride at different temperature, and morphology of particles were characterized by means of XRD and SEM. The experiment could help students master basic knowledge quickly and efficiently. Their interests in scientific research would be motivated, and their innovative ability would be cultivated.
PBL Teaching Mode of Physical Chemistry Experiment Based on Network Teaching Platform
Combined with three conventional physical chemistry experiments such as measurement of sucrose hydrolysis rate constant, determination of liquid saturation vapour pressure and combustion heat, specific implementing steps of the teaching method of problem-based learning (PBL) in physical chemistry experiment based on the network teaching platform were introduced. And teaching mode in chemical experiment teaching practice was discussed. The result showed that the teaching effect was good and this teaching mode had certain popularized value.
Qualitative Analysis Experiment of Volatile Chemicals in Onions for Pre-Service Teachers
By using common laboratory equipments, the qualitative analysis of the volatile components in onion such as sulfide, alcohols, aldehydes and carboxylic acid was designed to let the pre-service teachers to experience inquiry learning, grasp the method of experiment design and develop the ability of exploration.
Relationship of Medical Chemistry and Undergraduate's Innovative Ability in Medical Colleges
Cultivating the innovative ability of undergraduates plays a key role in training excellent innovative talents, and medical chemistry is an important course for cultivating the innovative ability in medical universities. This paper introduced several research fields such as structure modification of nature products, preparation of biomaterials, nano-materials and drug delivery carrier to develop medical undergraduate's innovative ability, research interests and group spirit in order to lay a foundation for cultivating innovative medical talents.
Teaching Reform of Chemistry Experiment Course in Medical Colleges
According to the characteristics of medical college students, the ways and means of chemistry experiment teaching were explored. The integrated chemistry experiment course system which emphasizes on student-centered and ability-building as the core was constructed. The content of experiment teaching was optimized to highlight the relationship between chemistry and medicine or life sciences. We adopted a variety of experiment teaching methods and developed the R&D of digital virtual experiment. The diversified comprehensive assessment system was set up.The reform of medical chemistry experiment teaching has stimulated interests of the students and improved the teaching quality of experimental course. It laid a good foundation for cultivating excellent medical talents.
Application of 3D Virtual Simulation Technology in Experiment Teaching of Lithium Ion Battery
The 3D virtual simulation technology was introduced into the experiment teaching of lithium ion battery. The virtual simulation experiment of lithium ion button cell production and performance test was made, and the design process of simulation experiment was introduced. The simulation experiment used 3Ds Max software to build the model and animation of the instrument and working principle, built a highly simulated virtual laboratory scene with Unity3D software and simulated the whole process of the experiment operation, so that the operator could easily complete the virtual simulation experiment process of production and performance test of lithium ion button battery. The application of 3D virtual simulation technology in the experiment teaching of lithium ion battery could make up the deficiency of traditional experiment teaching of lithium ion battery, improve the students' interests in learning, enrich the teaching means of classroom experiment, and improve the teaching quality and teaching effect effectively.
Typical Case of Data Processing of Distillation Experiment Based on Origin 8.0 Software
During the experimental data processing of determining distillation tray efficiency, a plate-by-plate calculation method is needed by alternately using equations of phase equilibrium and equations of operating line. The traditional manual graphical method and new exploitative data processing software have many defects such as heavy workload, low reliability and poor quality of experiment teaching. Combining an example, the application of Origin 8.0 software in distillation experiment has been discussed with the subsection fitting method. This process is easy to understand. It is also useful for improving students' ability of experimental data processing and accurate analysis.
Pre-Service Chemistry Teachers' Perception of Conceptual Change Teaching
Practice and Reflection on Organic Chemistry Teaching for “3+1” Chinese-Foreign Cooperative Education Program
Establishment of Cavendish Laboratory and Its Important Contribution to Chemistry