Electrolysis of Ti2CO solid solution prepared by TiC and TiO2

Jiao, Shuqiang; Zhu, Hongmin

doi:10.1016/j.jallcom.2006.08.016

Cited by 97 publications

(60 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…TiC 1-x O x (xo1) powders were synthesized by the solid-state reaction of stoichiometric amounts of TiC and TiO (99.99%, Aladdin). 30 As-synthesized TiC 1-x O x powders (5 g) with 1 ml of deionized water were pressed into 20-mm-diameter bulks under a pressure of 5 MPa and then annealed for 3 h at 1073 K in a tubular resistance furnace under argon atmosphere to obtain porous pellets. The core-shell TiC 1-x O x @TiO y (xo1, 1oyo2) heterostructure materials were prepared using a facile anodization process, where the as-annealed porous pellets were used as the anode, a silver disk was used as the cathode and 0.01 wt.% phosphoric acid solution was used as the electrolyte solution.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

High thermoelectric performance of all-oxide heterostructures with carrier double-barrier filtering effect

Hou

Wei

et al. 2015

NPG Asia Mater

Self Cite

View full text Add to dashboard Cite

Thermoelectric materials can realize significant energy savings by generating electricity from untapped waste heat; however, the coupling of the thermoelectric parameters unfortunately limits their efficiency and practical applications. Herein, rational all-oxide TiC 1-x O x @TiO y -TiO 2 (xo1, 1oyo2) heterostructures with significantly enhanced thermoelectric properties have been designed, and a high dimensionless figure of merit (ZT) value of up to 0.84 at 973 K was achieved in the all-oxide TiC 0.1 O 0.9 @TiO y -TiO 2 heterostructures, which is one of the highest values in n-type oxide bulk thermoelectric materials to date. The TiC 1-x O x @TiO y heterostructures, which include a thin film of approximately 5-10 nm on the surface of TiC 1-x O x compounds prepared by a facile anodization process, exhibit an obvious improvement of the thermoelectric power factor. Furthermore, an excellent dimensionless figure of merit value was obtained in the TiC 1-x O x @TiO y -TiO 2 heterostructures prepared by the anodization process assisted by the sol-gel chemical route, which can be attributed to the decrease in the carrier concentration via the carrier double-barrier filtering effect. This work develops a facile strategy for synthesizing core-shell heterostructures and demonstrates their superior ability to optimize thermoelectric energy harvesting.

show abstract

Section: Methodsmentioning

confidence: 99%

“…26 To overcome this drawback, TiC 1-x O x solid solutions with high electrical conductivity and good thermal stability were applied as TE materials. [30][31][32] Therefore, TiC 1-x O x solid solutions are promising candidates as TE materials in the heat-to-electricity conversion field.…”

Section: Introductionmentioning

confidence: 99%

High thermoelectric performance of all-oxide heterostructures with carrier double-barrier filtering effect

Hou

Wei

et al. 2015

NPG Asia Mater

Self Cite

View full text Add to dashboard Cite

show abstract

“…Earlier work in industry and academia had shown that processes using an electronically conducting Ti oxycarbide anode might be feasible [65][66][67][68][69][70][71][72][73][74][75] . Oxycarbide of approximate composition Ti 2 CO can readily be prepared by reacting TiO 2 with carbon at elevated temperatures in inert atmosphere, and then be used as the anode in a high temperature electrolytic cell with a molten chloride electrolyte.…”

Section: Combination Of Electrowinning and Electrore Ningmentioning

confidence: 99%

Aspects of the Application of Electrochemistry to the Extraction of Titanium and Its Applications

Fray

Schwandt

2017

Mater. Trans.

View full text Add to dashboard Cite

For over ve decades the main route for the extraction of titanium has been the Kroll process. It is regarded as being expensive, labour intensive, reliant on a high quality feedstock, and environmentally unfriendly, but it has thus far not been possible to replace it. As a result the usage of titanium is still restricted to a few high end applications. During the past twenty years several new molten salt based electrochemical approaches for the reduction of titanium oxide have been introduced to meet these challenges, and these may, eventually, lead to novel extraction processes for titanium and other reactive metals. This paper summarises the many interesting concepts that underlie these electrochemical methods, of which some have already advanced to the stage of substantial pilot plants whilst others are still being developed at the laboratory level. The paper also reviews the development of new materials for use as the anode in these processes. Finally, it touches upon the development of processes for the regeneration of oxidised titanium and for the welding of titanium under cathodic protection in cases where protective gas shielding is not possible.

show abstract

“…During electrolysis, low-valence titanium ions dissolve into the melt and are deposited as titanium at the cathode. [6][7][8][9][10] Efficiency and product quality are significantly increased in this process compared to those of the FFC process; however further studies are required for the large-scale preparation of anode materials and industrial scale-up.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Titanium from TiCl<sub>4</sub> in a Molten Fluoride-chloride Salt

Zhu

Qiu

Sun³

2017

Electrochemistry

View full text Add to dashboard Cite

Titanium was prepared from TiCl 4 in molten NaCl-KCl-NaF salt. The product of the reaction of TiCl 4 with NaF was identified using X-ray diffraction, and its electrochemical behavior was studied using cyclic voltammetry and square wave voltammetry. The electrochemical deposition of titanium was investigated during the addition of TiCl 4 to NaClKCl-NaF melts. The results indicate that Na 2 TiF 6 was first obtained through the reaction of NaF with TiCl 4 in the NaFKCl-NaCl melt, and Na 2 TiF 6 was decomposed to Na + and [TiF 6 ] 2− in the melts. [TiF 6 ] 2− was then sequentially reduced to [TiF 6 ] 3− and Ti at the cathode, accompanied by chlorine gas emission at the anode and fluoride formation at the cathode.

show abstract

Electrolysis of Ti2CO solid solution prepared by TiC and TiO2

Cited by 97 publications

References 18 publications

High thermoelectric performance of all-oxide heterostructures with carrier double-barrier filtering effect

High thermoelectric performance of all-oxide heterostructures with carrier double-barrier filtering effect

Aspects of the Application of Electrochemistry to the Extraction of Titanium and Its Applications

Preparation of Titanium from TiCl<sub>4</sub> in a Molten Fluoride-chloride Salt

Contact Info

Product

Resources

About