Titanium carbide coating of titanium by cathodic deposition from a carbonate melt
Titanium carbide coating of titanium by cathodic deposition from a carbonate melt
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DOI：
10.1149/2.016211jes
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发表时间：
2012
影响因子：
3.9
通讯作者：
V. Kaplan;E. Wachtel;I. Lubomirsky
中科院分区：
文献类型：
--
作者：
V. Kaplan;E. Wachtel;I. Lubomirsky
描述了在 900°C 的熔融 Li 2 CO 3 中由于阴极偏压而在 Ti 电极上沉积 TiC 涂层。在施加相对于开路电压为 3V 偏压的前 5-20 分钟内，石墨的形成最少，所得 TiC 层厚约 10 μm。长时间施加负偏压会导致石墨枝晶的形成。这种行为可以用 CO 在 TiC 上的过电势低于在石墨上的事实来解释。所得的Ti\TiC结构可以很好地用作电解熔融Li 2 CO 3 将CO 2 转化为CO以用于能量存储的阳极。它比以前使用的石墨电极具有更高的电导率，并且可以原位制备。因此，这里描述的过程可以为 CO 的电化学生产的实际实施做出有价值的贡献。此外，TiC 涂层完全保形的事实表明，相同的过程可以用作用 TiC 涂覆 Ti 的通用方法。
The deposition of a TiC coating on a Ti electrode in molten Li 2 CO 3 at 900°C due to cathodic bias is described. During the first 5―20 min of application of ―3V bias with respect to open circuit voltage, the formation of graphite is minimal and the resulting TiC layer is ∼10 μm thick. Applying negative bias for longer time results in the formation of graphite dendrites. This behavior can be explained by the fact that the overpotential of CO is lower on TiC than on graphite. The resulting Ti\TiC structure can be employed to good advantage as the anode in the electrolysis of molten Li 2 CO 3 for CO 2 to CO conversion for energy storage. It has higher conductivity than the graphite electrode used previously and can be prepared in situ. The process described here can therefore make a valuable contribution to the practical implementation of the electrochemical production of CO. In addition, the fact that the TiC coating is perfectly conformal suggests that the same process can be used as a general method of coating Ti by TiC.