With the rapid development of technology in today's era, energy-related issues have become increasingly prominent. Energy storage technology, as a crucial link in the energy field, has received unprecedented attention. Supercapacitors, emerging as a shining new star in the energy storage industry, are gradually coming into people's view with their distinctive advantages and broad application prospects, thus becoming the "new darling" in the modern energy domain.

Pure tungsten electrodes, as one of the earliest electrodes used in argon arc welding, have consistently played a significant role in the welding industry. This type of electrode, characterized by its high melting point, high density, corrosion resistance, and excellent electrical and thermal conductivity, has become an indispensable key material under specific welding conditions.

In the high-temperature industry, pure tungsten electrodes have emerged as indispensable core materials in welding, smelting, and plasma technology, thanks to their exceptional physical and chemical properties. As the single metallic element with the highest melting point, tungsten's stability in extreme environments makes it the preferred choice for processing high-melting-point metals and demanding processes.

The types of tungsten electrodes are mainly classified according to the different rare earth oxides or alloy elements doped in them. Here are the common types of tungsten electrodes and their characteristics: