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Application of tin dioxide in the fields of light, heat and electricity

2018-09-05
Tin oxide, chemical formula SnO2. It is a white, light yellow or light gray square, hexagonal or orthorhombic powder.There are many methods for preparing tin oxide. Currently, methods commonly used include sol-gel method, co-precipitation method, and electrochemical deposition method.
 
SnO2 is an excellent transparent conductive material. It is the first transparent conductive material to be put into commercial use. In order to improve its conductivity and stability, it is often used for doping, such as SnO2:Sb, SnO2:F, etc.
 
Tin oxide electrodes are widely used in the smelting of high-grade optical glass and in the electrolytic aluminum industry. The tin oxide level is especially suitable for the melting of flint-type glass, flint, and heavy-duty glass, and does not cause pollution to the glass.
 
SnO2 is an important semiconductor sensor material. The gas sensor prepared by it has high sensitivity and is widely used in the detection and prediction of various combustible gases, environmental pollution gases, industrial exhaust gases and harmful gases. The humidity sensor prepared with SnO2 as the base material has applications in improving the indoor environment, precision equipment room, as well as libraries, art galleries, and museums. By doping a certain amount of CoO, Co2O3, Cr2O3, Nb2O5, Ta2O5, etc. in SnO2, varistor with different resistance values can be made, and it has wide applications in power systems, electronic circuits, household appliances, and the like.
 
SnO2 has good permeability to visible light, excellent chemical stability in aqueous solution, and specific conductivity and infrared radiation reflection characteristics. Therefore, it is used in lithium batteries, solar cells, liquid crystal displays, optoelectronic devices, and transparent conductive materials. Electrodes, anti-infrared detection and protection and other fields are also widely used. SnO2 nanomaterials have significant changes in physical properties such as light, heat, electricity, sound, magnetism and other macroscopic properties compared to traditional SnO2 due to their small size effect, quantum size effect, surface effect and macroscopic quantum tunneling effect. Therefore, nanomaterials can be used to improve the performance of sensor materials.