The titanium suboxide ceramic electrode material is produced by reducing high-purity titanium dioxide powder by hydrogen H2 at a high temperature of 1200 degrees.
The main crystal phase is Ti4O7.
The appearance of the product is blue-black flow dynamic powder.
High conductivity of metal-like materials.
Excellent chemical stability against acids and alkalis.
Unique electrochemical performance.
With high mechanical strength, it can be easily formed into electrode shapes such as plates, tubes, and rods.
The outstanding physical property of titanium suboxide is that it has good electrical conductivity at room temperature, especially the Ti4O7 phase, which has a single crystal conductivity of up to 1500S/cm, which is almost metal conductive. The actual titanium suboxide is composed of polycrystalline phase, and the conductivity varies with the content of Ti4O7 and the size of the powder particles, but it can fully meet the requirements as an electrode material.
The specific gravity of titanium suboxide is small, which is conducive to the lighter weight of the product and the improvement of specific energy.
It has strong abrasion resistance, erosion resistance and stable electrode size. High mechanical strength and can be processed.
Titanium suboxide has no magnetism, is not easy to agglomerate, and has good dispersibility in water. When used as a conductive additive, it is convenient for uniform mixing with other battery active materials and is beneficial to uniform current distribution.
Titanium suboxide has a high compatibility with organic polymers and can be mixed with various plastics to overcome the shortcomings of poor toughness of ceramic materials and facilitate the production of flexible electrodes with various shapes.
Titanium suboxide has particularly excellent chemical stability and corrosion resistance. It is very stable in strong acid and alkali environments, exceeding most of the electrode materials commonly used in the industry, including its parent titanium metal.
It is stable in some strong etching solutions that can corrode titanium metal (including fluoride, hydrochloric acid, etc.). For example, 40% sulfuric acid or oxalic acid can severely corrode titanium metal, but titanium suboxide is almost inert.
The room temperature working current of the titanium suboxide ceramic electrode is about 5-20mA.
It can be used as a positive electrode or a negative electrode for hydrogen and oxygen evolution reaction, and the overpotential of hydrogen and oxygen evolution is very high.
As an electrode support material, it can be electroplated, chemically deposited or coated with various metal oxides or precious metal catalysts, and the chemical combination with these catalysts is very good, the catalytic activity is almost unchanged, and the effect is good.