New high temperature amorphous protective coatings for Mg2Si thermoelectric material

Nieroda, Paweł; Mars, Krzysztof; Nieroda, Jolanta; Leszczyński, Juliusz; Król, Magdalena; Drożdż, Ewa; Jeleń, Piotr; Sitarz, Maciej; Koleżyński, Andrzej

doi:10.1016/j.ceramint.2019.02.075

Cited by 24 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For a further confirmation of the drawn conclusions further investigations and annealing experiments should be performed with better coating, see e.g. [67][68][69][70][71][72].…”

Section: Discussionmentioning

confidence: 85%

Aluminum as promising electrode for Mg2(Si,Sn)-based thermoelectric devices

Camut

Pham

Truong

et al. 2021

Materials Today Energy

View full text Add to dashboard Cite

“…For a further confirmation of the drawn conclusions further investigations and annealing experiments should be performed with better coating, see e.g. [67][68][69][70][71][72].…”

Section: Discussionmentioning

confidence: 85%

Aluminum as promising electrode for Mg2(Si,Sn)-based thermoelectric devices

Camut

Pham

Truong

et al. 2021

Materials Today Energy

View full text Add to dashboard Cite

“…The investigation of suitable coating and annealing conditions should therefore be prioritized for further TEG development, see, e.g., Refs. [58][59][60][61][62][63].…”

Section: Discussionmentioning

confidence: 99%

Overcoming Asymmetric Contact Resistances in Al-Contacted Mg2(Si,Sn) Thermoelectric Legs

et al. 2021

View full text Add to dashboard Cite

Thermoelectric generators are a reliable and environmentally friendly source of electrical energy. A crucial step for their development is the maximization of their efficiency. The efficiency of a TEG is inversely related to its electrical contact resistance, which it is therefore essential to minimize. In this paper, we investigate the contacting of an Al electrode on Mg2(Si,Sn) thermoelectric material and find that samples can show highly asymmetric electrical contact resistivities on both sides of a leg (e.g., 10 µΩ·cm2 and 200 µΩ·cm2). Differential contacting experiments allow one to identify the oxide layer on the Al foil as well as the dicing of the pellets into legs are identified as the main origins of this behavior. In order to avoid any oxidation of the foil, a thin layer of Zn is sputtered after etching the Al surface; this method proves itself effective in keeping the contact resistivities of both interfaces equally low (<10 µΩ·cm2) after dicing. A slight gradient is observed in the n-type leg’s Seebeck coefficient after the contacting with the Zn-coated electrode and the role of Zn in this change is confirmed by comparing the experimental results to hybrid-density functional calculations of Zn point defects.

show abstract

“…To overcome this issue, recently, there have been several efforts to develop the technologies of anticorrosive coating for TE materials. [52][53][54][55] For example, Brostow et al reported that the coating of high-temperature polymers for Bi 2 Te 3 -based TE materials significantly improves the service life of TE materials in corrosive environments. [53] We believe that such anticorrosive coating technologies will accelerate the industrialization of the exhaust gas tubular TEGs.…”

Section: Discussionmentioning

confidence: 99%

Doping‐Induced Viscoelasticity in PbTe Thermoelectric Inks for 3D Printing of Power‐Generating Tubes

Lee

Choo

et al. 2021

Advanced Energy Materials

View full text Add to dashboard Cite

Thermoelectric (TE) technologies offer promising means to enhance fossil energy efficiencies by generating electricity from waste heat from industrial or automobile exhaust gases. For these applications, thermoelectric modules should be designed from the perspective of system integration for efficient heat transfer, system simplification, and low processing cost. However, typical thermoelectric modules manufactured by traditional processes do not fulfil such requirements, especially for exhaust pipes. Hence, a 3D‐printing method for PbTe thermoelectric materials is reported to design high‐performance power‐generating TE tubes. The electronic doping‐induced surface charges in PbTe particles are shown to significantly improve the viscoelasticities of inks without additives, thereby enabling precise shape and dimension engineering of 3D bulk PbTe with figures of merit of 1.4 for p‐type and 1.2 for n‐type materials. The performance of the power‐generating TE tube fabricated from 3D‐printed PbTe tubes is demonstrated experimentally and computationally as an effective strategy to design system‐adaptive high‐performance thermoelectric generators.

show abstract

New high temperature amorphous protective coatings for Mg2Si thermoelectric material

Cited by 24 publications

References 20 publications

Aluminum as promising electrode for Mg2(Si,Sn)-based thermoelectric devices

Aluminum as promising electrode for Mg2(Si,Sn)-based thermoelectric devices

Overcoming Asymmetric Contact Resistances in Al-Contacted Mg2(Si,Sn) Thermoelectric Legs

Doping‐Induced Viscoelasticity in PbTe Thermoelectric Inks for 3D Printing of Power‐Generating Tubes

Contact Info

Product

Resources

About