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Title of article :
Controlled synthesis of La1−xSrxCrO3 nanoparticles by hydrothermal method with nonionic surfactant and their ORR activity in alkaline medium
Author/Authors :
Choi، نويسنده , , Bo-Hyun and Park، نويسنده , , Shin Ae and Park، نويسنده , , Bong Kyu and Chun، نويسنده , , Ho Hwan and Kim، نويسنده , , Yong-Tae، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2013
Pages :
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Abstract :
Sr-doped LaCrO3 nanoparticles were prepared by the hydrothermal method with the nonionic surfactant Triton X-100 followed by heat treatment at 1000 °C for 10 h. The obtained perovskite nanoparticles had smaller particle size (about 100 nm) and more uniform size distribution than those synthesized by the conventional coprecipitation method. On the other hand, it was identified with the material simulation that the electronic structure change by Sr doping was negligible, because the initially unfilled eg-band was not affected by the p-type doping. Finally, the perovskite nanoparticles synthesized by hydrothermal method showed much higher ORR activity by over 200% at 0.8 V vs. RHE than those by coprecipitation method.
Keywords :
Oxygen reduction reaction , hydrothermal synthesis , Nonionic surfactant , Electrocatalysts , LaCrO3
Journal title :
Materials Research Bulletin
Journal title :
Materials Research Bulletin
Serial Year :
Link To Document :