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Journal of Materials Science and Nanotechnology | Volume: 3
March 20-21, 2019 | London, UK
Materials Science and Materials Chemistry
2nd International Conference on
Conventionally ionic conductivity has been developed by
ionic conductingmaterials but challenge unsolved. Typically,
solid oxide fuel cell (SOFC), yttrium stabilized zirconia (YSZ)
electrolyte, which needs high operational temperature above
700°C to reach required ionic conductivity, for SOFC technology
overseveraldecadeshasnotyetbeencommercialized.Thesame
challenge is faced for next generation solid battery technologies.
Semiconductor-ionic materials are new functional material
familywithsuperionicconductiondevelopedbysemiconductors
or theirheterostructurematerialswithwideenergyapplications.
The band structure, p-n junction and build-in-field have
been discovered to facilitate fast ionic transport. Tuning
semiconductors and heterostructures to ionic conductors is a
very effective approach to develop superionic conductivities
and novel energy devices. For example, fuel cells built on
anode, electrolyte and cathode can now be constructed by
semiconductor-ionic heterostructures to realizemore efficiently
the fuel cell hydrogen oxidation reaction (HOR) and oxygen
reduction reaction (ORR) through band structure and alignment
without using the electrolyte separator. The novel ceramic
fuel cells based on semiconductor-based membranes instead
of conventional electrolyte have been demonstrated with
excellent power outputs at temperatures between 400-550oC.
Numerous amounts of semiconductor-ionic materials
have been explored and novel fuel cell technologies have
been demonstrated. Some examples are bulk hetero p-n
junction and Schottky junction for single layer fuel cells,
designed by energy bands and alignments. New disciplines of
Semiconductor-Ionics and Semiconductor Electrochemistry
have been establishing not only for energy conversion, e.g.
fuel cells, but also for energy storage devices like batteries.
Speaker Biography
., in1987fromUniversityofSci.&Tech.ofChinaandPhD in1995from
Chalmers University of Technology, Physics and Engineering Physics, Sweden and during
10/ 95-12/97 worked as Postdoc. in Uppsala University (in Ångström Lab). Since 1998, Zhu
moved to KTH and in 1999 became associate professor in Dept of Chemical Engineering and
Technology, and now in Dept of Energy Technology, KTH. He is visiting professor in Aalto
University and Nanyang Technological University as well as in several Chinese universities
to co-supervise research projects and PhD students. From 2018, Zhu has been appointed
as visiting professor position in Loughborough University, UK. Zhu has more than 300
publications in nano-composites and new semiconductor-ionic materials for advanced fuel
cells from material to device, technology for scaling up into polygeneration systems, e.g.
in fuel cells, innovations made on low temperature, 300-600°C SOFCs, electrolyte (layer)-
free fuel cell (EFFC), single layer fuel cells (SLFCs), semiconductor-based fuel cell as next
generation high-efficient fuel-to-electricity conversion. He has also devoted to establish
frontier disciplinary of Semiconductor-Ionics and Semiconductor Electrochemistry for fuel
cells and other energy storage devices, e.g. solid batteries.
e:
Bin Zhu
China University of Geosciences, China
Semiconductors and semiconductor ionic hetero-structure composites for next generation energy
conversion technology