紀要論文 Fabrication of High-performance Ni-GDC-nanocube Core-shell Anodes Prepared by a Chemical Reduction Method for Low-temperature Solid-oxide Fuel Cells

Yamamoto, Kazuhiro  ,  Qiu, Nan  ,  Ohara, Satoshi

44 ( 1 )  , pp.15 - 18 , 2015-06 , 大阪大学接合科学研究所 , オオサカ ダイガク セツゴウ カガク ケンキュウジョ , Joining and Welding Research Institute, Osaka University
ISSN:03874508
NII書誌ID(NCID):AA00867058
内容記述
High-performance attractive SOFC anode material Ni-GDC-nanocube core-shell composites were successfully fabricated in a solution by chemical reduction method. The novel anode material was composed of a spherical metal Ni core and covering GDC nanocube shell. 200nm size of large Ni spheres provided great porous and Ni-Ni necking framework for current collection as macrostucture. On the surface of Ni spheres, 10nm size of GDC nanocube particles covered with highly reactive{001} crystal facets acquired enlarged triple-phase boundary (TPB) as microstructure. In situ fabrication of Ni-Ni necking framework was achieved by crystal growth of Ni spheres during generation tests even at 500℃ operating. The non-sintered Ni-GDC-nanocube core-shell anode showed a higher power density compared with conventional Ni-GDC-anodes sintered at 1300℃.The designated macro-and microstructure of Ni-GDC core-shell anodes were maintained after generation testd even at 700℃ operating.
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http://ir.library.osaka-u.ac.jp/dspace/bitstream/11094/57269/1/jwri44_1-015.pdf

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