2차원 구조 나노시트의 첨가를 통한 Ag의 치밀화 방지
Sintering prevention of Ag by the addition of 2-dimensional nanosheet
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초록
연료전지에 사용되는 귀금속 전류집전체의 물성은 소재 기공도에 크게 영향을 받는다. 따라서 소재 기공도를 제어 위한 다양한 노력들이 진행되어왔다. 이중 많이 사용되는 전략으로 재료 열처리 시 기공형성제를 첨가하는 것이다. 기존의 기공형성제는 3차원 구조체였다. 본 연구에서는 차별화 전략으로 Ag 전류집전체의 기공도를 높이기 위해 2차원 구조 나노시트를 소결방지제로 첨가하였다. 실제로 나노시트 첨가에 의해 소결밀도가 감소되는 것을 보여주었다. 2차원 소재로는 초나노 두께(~ 1 nm)를 갖는 RuO2 나노시트가 이용되었다.
Abstract
The physical properties of the noble metal current-collector used for fuel cells are greatly influenced by the material porosity. Therefore, increasing the porosity of the material studies has attracted much attention. One of the most representative strategies is to use porosity additives in sintering materials. The conventional porosity additive had a threedimensional structure of a spherical powder. In this study, porosity additive with 2-dimensional (2D) nanosheet was used todecrease the sintering density of Ag current-collector and its effect was confirmed. As a 2D layered structure material, 1 nm-thick RuO2 nanosheets were used as porosity additives.
참고문헌 (14)
- S.W. Sofie, "Silverchromium oxide interactions in SOFC environments", J. Power Sources, 191, pp.465~ (2009)
- T. Fan, "Effect of electroplated Au layer on bonding performance of Ag pastes", J. Alloys Compd, 731, pp.1280~
- D. Wakuda, "Ag nanoparticle paste synthesis for room temperature bonding", IEEE Trans. Compon. Packag. Technol, 33, pp.437~ (2010)
- H. Li, "Preparation of nano silver paste and applications in transparent electrodes via electric-field driven micro-scale 3D printing", Nanomaterials, 10, pp.107~ (2020)
- H. Sumi, "Experimental and simulated evaluations of current collection losses in anode-supported microtubular solid oxide fuel cells", J. Electrochem. Soc, 160, pp.F1232.~ (2013)
- T.T. Wan, "Performance variability of Ba0.5Sr0.5Co0.8Fe0.2O3−δ cathode on proton-conducting electrolyte SOFCs with Ag and Au current collectors", Rare Met, 37, pp.633~ (2018)
- Y. Gong, "Performance of (La,Sr)MnO3 cathode based solid oxide fuel cells: Effect of bismuth oxide sintering aid in silver paste cathode current collector", J. Power Sources, 196, pp.928~ (2011)
- Y. Chen, "Role of silver current collector on the operational stability of selected cobalt-containing oxide electrodes for oxygen reduction reaction", J. Power Sources, 210, pp.146~ (2012)
- M.S. Khan, "Effect of various sintering inhibitors on the long-term performance of Ni-YSZ anodes used for SOFCs", Int. J. Hydrogen Energy, 40, pp.11968~ (2015)
- Y. Omomo, "Redoxable nanosheet crystallites of MnO2 derived via delamination of a layered manganese oxide", J. Am. Chem. Soc, 125, pp.3568~ (2003)
- S.E. Lee, "Anomalous electronic and protonic conductivity of 2D titanium oxide and low-temperature power generation using its protonic conduction", Adv. Mater. Interfaces, 8, pp.1~ (2021)
- 박지영, "2차원 층상구조를 갖는 소결조제와 이를 활용한 세륨산화물 소결성 향상", 한국결정성장학회지, 29(1), pp.1~5 (2019), 한국결정성장학회[DOI]
- 이상은, "초박막 두께의 Nb-TiOx 나노시트 합성", 한국결정성장학회지, 30(5), pp.194~199 (2020), 한국결정성장학회[DOI]
- J.S. Jang, "Heterogeneous, porous 2D oxide sheets via rapid galvanic replacement: toward superior HCHO sensing application", Adv. Funct. Mater, 29, pp.1~ (2019)