Journal of Sustainable Metallurgy ( IF 2.5 ) Pub Date : 2022-05-02 , DOI: 10.1007/s40831-022-00526-8 Sai Krishna Padamata 1 , Kamaljeet Singh 1, 2 , Gudrun Saevarsdottir 1, 2 , Geir Martin Haarberg 2
|
Titanium diboride (TiB2) is considered a promising material for wettable cathodes in aluminum electrolysis. The demand for wettable cathodes is associated with the development of inert anode technologies to eliminate CO2 emissions caused by the conventional aluminum reduction process. Titanium diboride has been given special attention due to its superior properties, such as high wettability, good electrical conductivity, wear resistance, and excellent chemical stability. In this paper, we discuss different synthesis techniques used for the preparation of TiB2 cathode material. The main methods are sintering, electrodeposition, and plasma spraying. Electrodeposition is considered to be the most reliable low-cost method for TiB2 preparation. The vertical anode–cathode distance can be reduced by introducing wetted TiB2 cathodes, through which specific energy consumption can be reduced significantly. For a longer lifetime, the TiB2 cathodes should be resistant to electrolyte penetration. Further research should be conducted to understand the electrochemical behavior of TiB2 in low-temperature electrolytes.
Graphical Abstract
中文翻译：
铝电解用可湿性 TiB2 阴极：综述
二硼化钛（TiB 2）被认为是铝电解中可湿性阴极的一种有前途的材料。对可润湿阴极的需求与惰性阳极技术的发展相关，以消除由传统铝还原工艺引起的CO 2排放。二硼化钛因其优异的性能，如高润湿性、良好的导电性、耐磨性和优异的化学稳定性而受到特别关注。在本文中，我们讨论了用于制备 TiB 2正极材料的不同合成技术。主要方法有烧结、电沉积和等离子喷涂。电沉积被认为是TiB 2最可靠的低成本方法准备。通过引入润湿的TiB 2阴极可以减少垂直阳极-阴极距离，从而可以显着降低比能量消耗。为了获得更长的使用寿命，TiB 2阴极应该能够抵抗电解质的渗透。应进行进一步研究以了解 TiB 2在低温电解质中的电化学行为。
京公网安备 11010802027423号