Self-propagating high-temperature synthesis of La(Sr) Ga(Mg, Fe)O_(3-δ) with planetary ball-mill treatment for solid oxide fuel cell electrolytes
Self-propagating high-temperature synthesis of La(Sr) Ga(Mg, Fe)O_(3-δ) with planetary ball-mill treatment for solid oxide fuel cell electrolytes
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行星球磨处理自蔓延高温合成La(Sr)Ga(Mg,Fe)O_(3-δ)固体氧化物燃料电池电解质
DOI：
10.1016/j.jallcom.2011.05.075
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发表时间：
2011
影响因子：
6.2
通讯作者：
T.Akiyama
中科院分区：
文献类型：
--
作者：
A.Nobuta;S.Hosokai;S.Yamamoto;N.Okinaka;T.Ishihara;T.Akiyama
研究了自蔓延高温合成（SHS）、行星式球磨（PBM）处理和烧结温度对固体氧化物燃料电池（SOFC）电解质材料La0.7Sr0.3Ga0.7Mg0.1Fe0.2O3−δ（LSGMF 73712）的综合影响。比较了SHS产物（SHS-LSGMF 73712）与固相反应（SSR）产物的烧结性能和发电性能。将SHS产物用PBM处理10、30、50和70 h。SHS产物中含有副产物LaSrGaO 4，而PBM处理50 h以上的SHS产物在1350°C空气中烧结3 h后，副产物LaSrGaO 4消失。在样品中，用PBM处理70 h的SHS产物显示出上级的烧结（1350°C），而SSR产物（SSR-LSGMF 73712）在空气中在1450°C下成功烧结3 h。在Ni-Fe/SHS-LSGMF 73712-PBM 70 h电池配置下，（0.3mm厚）/Sm0.5Sr0.5CoO3，在800°C下使用湿氢气时，最大功率密度为0.673W/cm 2（3mol%H2O）为燃料，空气为氧化剂，流速为100 mL/min，在相同条件下，SSR-LSGMF 73712的功率密度为0.629W/cm 2，与SSR-LSGMF 73712的功率密度相当。
This study investigated the combined effects of self-propagating high-temperature synthesis (SHS), planetary ball-mill (PBM) treatment, and sintering temperature on La0.7Sr0.3Ga0.7Mg0.1Fe0.2O3−δ(LSGMF73712) as an electrolyte material for solid oxide fuel cells (SOFC). The SHS products (SHS-LSGMF73712) were compared with that prepared via solid-state reaction (SSR) in terms of sinterability and power generation performance. The SHS products were treated with PBM for 10, 30, 50, and 70h. The SHS products contained the by-product LaSrGaO4; however, in the SHS products treated with PBM for longer than 50h, the by-product disappeared after sintering at 1350°C for 3h in air. Among the samples, SHS products treated with PBM for 70h displayed superior sintering (1350°C), whereas the SSR product (SSR-LSGMF73712) was successfully sintered at 1450°C for 3h in air. Under the cell configuration of Ni–Fe/SHS-LSGMF73712-PBM70h (0.3mm thick)/Sm0.5Sr0.5CoO3, the maximum power density was 0.673W/cm2at 800°C using humidified hydrogen gas (3mol% H2O) as a fuel and air as an oxidizing agent at a flow rate of 100mL/min, which was almost equivalent to that using SSR-LSGMF73712 (0.629W/cm2at 800°C) under the same conditions.