Energy storage in ultrathin solid oxide fuel cells.
Energy storage in ultrathin solid oxide fuel cells.
复制标题
DOI：
10.1021/nl301601y
复制
发表时间：
2012-06
期刊：
影响因子：
10.8
通讯作者：
Q. Van Overmeere;K. Kerman;S. Ramanathan
中科院分区：
文献类型：
--
作者：
Q. Van Overmeere;K. Kerman;S. Ramanathan
如果燃料供应中断，氢燃料电池的功率输出很快就会减少到零。我们展示了具有纳米结构的氧化钒阳极的薄膜固体氧化物燃料电池，当燃料供应中断时，其发电时间明显长于参考多孔铂阳极薄膜固体氧化物燃料电池。定量研究了电极的电荷储存机理，确定了氧化钒阳极的氧化、储氢性能和电极上不同的氧浓度对电荷储存的可能贡献。燃料电池即使在很短的时间内也能储存电荷，这可能有助于移动能源电源的超小型化。
The power output of hydrogen fuel cells quickly decreases to zero if the fuel supply is interrupted. We demonstrate thin film solid oxide fuel cells with nanostructured vanadium oxide anodes that generate power for significantly longer time than reference porous platinum anode thin film solid oxide fuel cells when the fuel supply is interrupted. The charge storage mechanism was investigated quantitatively with likely identified contributions from the oxidation of the vanadium oxide anode, its hydrogen storage properties, and different oxygen concentration at the electrodes. Fuel cells capable of storing charge even for short periods of time could contribute to ultraminiaturization of power sources for mobile energy.