首页|Ultrafast nanomanufacturing via high-temperature shock of La0.6Sr0.4CoO3 catalysts for overall water splitting
Ultrafast nanomanufacturing via high-temperature shock of La0.6Sr0.4CoO3 catalysts for overall water splitting
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Electrochemical water splitting,as an effective sustainable and eco-friendly energy conversion strategy,can produce high-purity hydrogen(H2)and oxygen(O2)via hydrogen evolution reaction(HER)and oxy-gen evolution reaction(OER),respectively,altering the nonrenewable fossil fuels.Here,La0.6Sr0.4CoO3 per-ovskite oxide nanoparticles with an orthorhombic phase were synthesized within 2 min in a one-step reaction,using a rapid and efficient high-temperature shock(HTS)method.Impressively,the as-prepared La0.6Sr0.4CoO3 with orthorhombic phase(HTS-2)exhibited better OER and HER performance than the hexagonal phase counterpart prepared using the traditional muffle furnace calcination method.The elec-trocatalytic performance enhancement of orthorhombic La0.6Sr0.4CoO3 can be attributed to the novel or-thorhombic structure,such as confined strontium segregation,a higher percentage of highly oxidative oxygen species,and more active sites on the surface.This facile and rapid synthesis technique shows great potential for the rational design and crystal phase engineering of nanocatalysts.
School of Materials Science and Engineering,Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education,Tianjin Key Laboratory of Composite and Functional Materials,Tianjin University,Tianjin 300072,China
School of Materials Science and Engineering,Institute of New Energy,Tianjin University,Tianjin 300072,China
Key Laboratory of Special Functional Materials for Ecological Environment and Information,Ministry of Education,Hebei University of Technology,Tianjin 300132,China
National Natural Science Foundation of ChinaNational Natural Science Foundation of China
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