As one of the key components of the cobalt-free battery, the negative electrode material can be modified with an appropriate amount of low-dimensional violet tungsten oxide powder during preparation, so that the prepared product has better charge and discharge characteristics and higher lithium storage capacity.

Violet tungsten oxide is a defect state of tungsten oxide with very novel physical and mechanical properties. It is not only used in the chemical industry, but also widely used in automobile manufacturing, mechanical processing, aerospace, chemical battery, electronic information and other fields. 

As a typical transition metal sulfide, tungsten disulfide flake nanomaterial have special optical, electrical, and catalytic properties, and are widely used in the fields of catalysis, hydrogen storage, and lithium storage.

Tungsten electrodes have been so popular for TIG welding and GTAW welding, including cerium doped, lanthanum doped, yttrium doped, thorium doped, zirconium doped, etc.