纳米片
材料科学
燃料电池
氢
质子交换膜燃料电池
金属有机骨架
金属
膜
质子
化学工程
氢燃料
无机化学
纳米技术
化学
物理化学
有机化学
冶金
工程类
核物理学
吸附
生物化学
物理
作者
Agamoni Pathak,Haruki Watanabe,Biplab Manna,Kazuto Hatakeyama,Shintaro Ida
出处
期刊:Small
[Wiley]
日期:2024-03-13
被引量:3
标识
DOI:10.1002/smll.202400222
摘要
Abstract Proton‐conducting metal–organic frameworks (MOFs) have attracted attention as potential electrolytes for fuel cells. However, research progress in utilizing MOFs as electrolytes for fuel cells has been limited, mainly due to challenges associated with issues such as the fabrication of MOF membranes, and hydrogen crossover through the MOF's pores. Here, proton conductivity and fuel cell performance of a self‐standing membrane prepared from of a bismuth subgallate MOF nanosheets with non‐porous structure are reported. The fabricated MOF nanosheet membrane with no binding agent exhibits structural anisotropy. The proton conductivity in the membrane thickness direction (4.4 × 10 −3 S cm −1 ) at 90 °C and RH 100% is observed to be higher than that in the in‐plane direction of the membrane (3.3 × 10 −5 S cm −1 ). The open circuit voltage (OCV) of a fuel cell with ≈120 µm proton conducting membrane is 1.0 V. The non‐porous nature of the MOF nanosheets contributes to the relatively high OCV. A fuel cell using ≈40 µm membrane as proton conducting electrolyte records a maximum of 25 mW cm −2 power density and a maximum of 109 mA cm −2 current density with 0.91 V OCV at 80 °C in humid conditions.
科研通智能强力驱动
Strongly Powered by AbleSci AI