Ultrafast nanomanufacturing via high-temperature shock of La_(0.6)Sr_(0.4)CoO_(3)catalysts for overall water splitting  

作　　者：Xiaoya Cui Wenyu Li Yanchang Liu Yumei Zhu Yanan Chen Cairong Gong Gang Xue 

机构地区：[1]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 [2]School of Materials Science and Engineering,Institute of New Energy,Tianjin University,Tianjin 300072,China [3]Key Laboratory of Special Functional Materials for Ecological Environment and Information,Ministry of Education,Hebei University of Technology,Tianjin 300132,China

出　　处：《Journal of Materials Science & Technology》2024年第24期1-7,共7页材料科学技术(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.42277369 and 52171219).

摘　　要：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 oxygen evolution reaction(OER),respectively,altering the nonrenewable fossil fuels.Here,La_(0.6)Sr_(0.4)CoO_(3)perovskite 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 La_(0.6)Sr_(0.4)CoO_(3)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 electrocatalytic performance enhancement of orthorhombic La_(0.6)Sr_(0.4)CoO_(3)can be attributed to the novel orthorhombic 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.

关 键 词：Perovskite oxides High-temperature shock Water splitting High Gibbs free energy Phase engineering 

分 类 号：O62[理学—有机化学]