| (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ-Ce0.9Gd0.1O2-δ复合阴极的制备及电化学性质 | |
| Preparation and Electrochemical Properties of (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ-Ce0.9Gd0.1O2-δComposite Cathode | |
| 摘要: 采用EDTA-柠檬酸盐法制备了（Pr0.9La0.1）2（Ni0.74Cu0.21Ga0.05）O4+δ（PLNCG），并与Ce0.9Gd0.1O2-δ（CGO）形成复合阴极PLNCG-CGO。XRD和SEM分析结果表明PLNCG与CGO在1 000℃具有较好的化学相容性。电化学阻抗测试结果表明PLNCG-30% CGO复合阴极在700℃的极化电阻为0.092 Ω·cm2；过电位为39.3 mV时，电流密度达到113.3 mA·cm-2。氧分压分析表明电极反应的速率控制步骤为电荷转移过程。阳极支撑单电池（Ni-CGO/CGO/PLNCG-30% CGO）在700℃的最大输出功率密度达到569 mW·cm-2，开路电压（OCV）为0.76 V。 | |
| 关键词: 中温固体氧化物燃料电池(IT-SOFCs) 复合阴极 PLNCG-CGO 电极反应 | |
| 基金项目: 国家自然科学基金（No.51302069，51372073）、高等学校博士学科点专项科研基金（No.20132301110002）、黑龙江省自然科学基金（No.E2016051）和人事部留学人员科技活动择优资助项目（No.2014-240）资助。 | |
| Abstract: (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ(PLNCG) is prepared by EDTA-citrate process, and forms composite cathode with Ce0.9Gd0.1O2-δ(CGO). XRD and SEM results demonstrate that PLNCG is chemical compatible with CGO at 1 000℃. The electrochemical measurements show that the polarization resistance (Rp) of PLNCG-30%CGO is 0.092 Ω·cm2 at 700℃. When the current density reaches 113.3 mA·cm-2, the cathode overpotential is only 39.3 mV at 700℃ in air. The oxygen partial pressure dependence of Rp indicates that the rate limiting step of the composite cathode is charge transfer process. The maximum power density of anode-support single cell (Ni-CGO/CGO/PLNCG-30%CGO) reaches 569 mW·cm-2 at 700℃ with open circuit voltage (OCV) of 0.76 V. | |
| Keywords: intermediate temperature solid oxide fuel cells (IT-SOFCs) composite cathode PLNCG-CGO electrode reaction | |
| 投稿时间：2016-07-08 修订日期：2016-10-14 | |
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| 盛双,赵辉,郝举红,孙丽萍,霍丽华.(Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ-Ce0.9Gd0.1O2-δ复合阴极的制备及电化学性质[J].无机化学学报,2016,32(12):2143-2150. | |
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