采用钌基催化剂的氨供料可逆质子陶瓷燃料电池。
Ammonia-fed reversible protonic ceramic fuel cells with Ru-based catalyst.
作者信息
Zhu Liangzhu, Cadigan Chris, Duan Chuancheng, Huang Jake, Bian Liuzhen, Le Long, Hernandez Carolina H, Avance Victoria, O'Hayre Ryan, Sullivan Neal P
机构信息
Metallurgical and Materials Engineering Department, Colorado School of Mines, Golden, CO, USA.
Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, China.
出版信息
Commun Chem. 2021 Aug 17;4(1):121. doi: 10.1038/s42004-021-00559-2.
The intermediate operating temperatures (400-600 °C) of reversible protonic ceramic fuel cells (RePCFC) permit the potential use of ammonia as a carbon-neutral high energy density fuel and energy storage medium. Here we show fabrication of anode-supported RePCFC with an ultra-dense (100%) and thin (4 μm) protonic ceramic electrolyte layer. When coupled to a novel Ru-(BaO)(CaO)(AlO) (Ru-B2CA) reversible ammonia catalyst, maximum fuel-cell power generation reaches 877 mW cm at 650 °C under ammonia fuel. We report relatively stable operation at 600 °C for up to 1250 h under ammonia fuel. In fuel production mode, ammonia rates exceed 1.2 × 10 NH mol cm sat ambient pressure with H from electrolysis only, and 2.1 × 10 mol NH cm s at 12.5 bar with H from both electrolysis and simulated recycling gas.
可逆质子陶瓷燃料电池（RePCFC）的中间工作温度（约400-600°C）使得氨有潜力作为一种碳中性的高能量密度燃料和储能介质。在此，我们展示了阳极支撑的RePCFC的制备，其具有超致密（约100%）且薄（4μm）的质子陶瓷电解质层。当与新型Ru-(BaO)(CaO)(AlO)（Ru-B2CA）可逆氨催化剂耦合时，在650°C的氨燃料条件下，燃料电池的最大发电功率达到877 mW/cm²。我们报告了在600°C下以氨为燃料时长达1250小时的相对稳定运行。在燃料生产模式下，仅通过电解产生的氢气，在环境压力下氨生成速率超过1.2×10⁻⁵ NH₃ mol/cm²·s，而在12.5 bar压力下，当同时使用电解产生的氢气和模拟循环气体时，氨生成速率为2.1×10⁻⁴ mol NH₃/cm²·s。
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