Nano-engineering of a 3D-ordered membrane electrode assembly with ultrathin Pt skin on open-walled PdCo nanotube arrays for fuel cells
Nano-engineering of a 3D-ordered membrane electrode assembly with ultrathin Pt skin on open-walled PdCo nanotube arrays for fuel cells
复制标题
用于燃料电池的开壁 PdCo 纳米管阵列上具有超薄 Pt 皮的 3D 有序膜电极组件的纳米工程
DOI：
10.1039/c7ta10901f
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发表时间：
2018
影响因子：
11.9
通讯作者：
Yi Baolian
中科院分区：
文献类型：
--
作者：
Zeng Yachao;Zhang Hongjie;Wang Zhiqiang;Jia Jia;Miao Shu;Song Wei;Xiao Yu;Yu Hongmei;Shao Zhigang;Yi Baolian
质子交换膜燃料电池（PEMFC）在恶劣的工作条件下存在铂消耗高和耐用性低的问题。为了减少 Pt 的消耗并提高耐用性，通过模板辅助欠电位沉积 (UPD) 和原电池位移，对 PEMFC 进行了纳米工程，以开壁 PdCo 纳米管阵列 (NTA) 上的超薄 Pt 皮为基础，对 PEMFC 进行了纳米工程化的 3D 有序膜电极组件 (MEA)。受益于先进的纳米结构，在阴极 Pt 负载量为 3.5 μg cm−2 时实现了 222.5 kW gPt−1 的最大功率密度，比传统 MEA 高 13.7 倍。加速降解测试表明所制备的纳米结构MEA比传统MEA更稳定。
Proton exchange membrane fuel cells (PEMFCs) suffer from high consumption of Pt and low durability under harsh operating conditions. To reduce the consumption of Pt and improve the durability, a 3D-ordered membrane electrode assembly (MEA) based on ultrathin Pt skin on open-walled PdCo nanotube arrays (NTAs) was nano-engineered for PEMFCs via template-assisted underpotential deposition (UPD) and galvanic displacement. Benefiting from the advanced nanostructure, a maximum power density of 222.5 kW gPt−1 was achieved with a cathodic Pt loading of 3.5 μg cm−2, which was 13.7 fold higher than that of a conventional MEA. Accelerated degradation tests demonstrate that the prepared nanostructured MEA is more stable than the conventional MEA.