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An Electrolyte‐Free Fuel Cell Constructed from One Homogenous Layer with Mixed Conductivity
Author(s) -
Zhu Bin,
Raza Rizwan,
Abbas Ghazanfar,
Singh Manish
Publication year - 2011
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201002471
Subject(s) - electrolyte , materials science , anode , conductivity , cathode , ionic conductivity , oxide , layer (electronics) , chemical engineering , metal , solid oxide fuel cell , composite number , inorganic chemistry , electrode , composite material , metallurgy , chemistry , engineering
Rather than using three layers, including an electrolyte, a working fuel cell is created that employs only one homogenous layer with mixed conductivity. The layer is a composite made from a mixture of metal oxide, Li 0.15 Ni 0.45 Zn 0.4 oxide, and an ionic conductor; ion‐doped ceria. The single‐component layer has a total conductivity of 0.1–1 S cm −1 and exhibits both ionic and semiconducting properties. This homogenous one‐layer device has a power output of more than 600 mW cm −2 at 550 °C operating with H 2 and air. Overall conversion is completed in a similar way to a traditional fuel cell, even though the device does not include the electrolyte layer critical for traditional fuel‐cell technologies using the three‐component anode–electrolyte–cathode structure.