| 质子导体固体氧化物燃料电池的Ba2Co9O14阴极材料 |
| Ba2Co9O14 as Cathode for Solid Oxide Fuel Cell Based on Proton Conductor |
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| 摘要: Ba2Co9O14(BCO)是一种新型的电子-氧离子混合导体, 在氧离子导体的固体氧化物燃料电池(SOFC)中, 其作为阴极材料的应用可能性已经得到证实, 本工作探索BCO在质子导体SOFC中的应用可能性.采用固相反应法制备BCO粉体, 研究BCO与质子导体电解质BZCY (BaZr0.1Ce0.7Y0.2O3-δ)之间的化学相容性, 分析BCO-BZCY复合阴极在BZCY电解质上的电化学性能.当复合阴极中BCO的质量含量为70%时, 阴极性能最佳, 界面阻抗活化能为1.26 eV.以BCO-BZCY为阴极, Ni-BZCY为阳极, BZCY为电解质的阳极支撑型单电池, 700 ℃时, 单电池的极化阻抗为0.15 Ω·cm2,最大功率密度为400 mW·cm-2. |
| 关键词: 固体氧化物燃料电池 复合阴极 质子导体电解质 Ba2Co9O14 |
| 基金项目: 国家自然科学基金(No.51372239)资助项目. |
| Abstract: Ba2Co9O14 (BCO) is a new mixed electronic-ionic conductor and is used as the cathode for solid oxide fuel cells based on oxygen ion conductors. In this work, BCO powders are prepared using solid-state reaction process and investigated as the cathode material for SOFCs based on proton conductors. BCO shows well chemical compatibility with typical proton conductor BZCY (BaZr0.1Ce0.7Y0.2O3-δ). The electrochemical performance of BCO cathode is improved when BZCY is cooperated, and the lowest interfacial polarization resistance is achieved at the compositon with 70wt% BCO, which exhibits an activation energy of about 1.26 eV. Single cells are also constructed with Ni-cermet anode supports. At 700 ℃, the total interfacial polarization resistances of the single cell is 0.15 Ω·cm2 and the peak power density is 400 mW·cm-2. |
| Keywords: solid oxide fuel cell composite cathode proton conductor Ba2Co9O14 |
| 投稿时间：2014-04-28 修订日期：2014-09-15 |
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| 苏峰,徐军,夏长荣.质子导体固体氧化物燃料电池的Ba2Co9O14阴极材料[J].无机化学学报,2014,30(12):2713-2718. |
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