NiO/YSZ nanocomposite particles synthesized via co-precipitation method for electrochemically active Ni/YSZ anode
NiO/YSZ nanocomposite particles synthesized via co-precipitation method for electrochemically active Ni/YSZ anode
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DOI：
10.1016/j.jpowsour.2008.12.038
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发表时间：
2009-08
影响因子：
9.2
通讯作者：
Kazuyoshi Sato;G. Okamoto;M. Naito;H. Abe
中科院分区：
文献类型：
--
作者：
Kazuyoshi Sato;G. Okamoto;M. Naito;H. Abe
采用氢氧化物共沉淀法合成了NiO/YSZ复合粒子。研究了pH值对复合粒子形貌的影响，以及对Ni/YSZ阳极的微观结构和电化学性能的影响。在pH值为10的条件下合成的粒子为聚集的复合体和较大的NiO。在800°C开路电压下，颗粒形成粗大且不均匀的阳极组织和中等面积比电阻(ASR)，为0.57Ωcm2。相反，在pH值为13的条件下成功地合成了纳米复合粒子。该粒子具有细小均匀的多孔结构，在800°C的开路循环伏安下，其粒径在200-400 nm之间，ASR为0.36Ωcm2。
NiO/YSZ composite particles were synthesized via a co-precipitation of hydroxides. We investigated the effect of pH on the morphology of the composite particles, as well as on the microstructure and the electrochemical property of the Ni/YSZ anode. The particles synthesized at pH 10 involved aggregated composites and large NiO. The particles resulted in coarse and inhomogeneous anode microstructure and moderate area specific resistance (ASR) as 0.57Ωcm2at 800°C under open circuit voltage (OCV). Contrarily, nano-sized composite particles were successfully synthesized at pH 13. The particles provided fine as well as homogeneous porous structure with the grain size in the range 200–400nm and low ASR as 0.36Ωcm2at 800°C under OCV.