Thomas Jasmine, Kunnathulli Anitha Panayamparambil, Vazhayil Ashalatha, Thomas Nygil
Department of Chemistry, Sree Narayana College, Kannur 670007, Kerala, India.
Department of Chemistry, Nirmalagiri College, Kannur 670701, Kerala, India.
ACS Omega. 2021 Jul 1;6(27):17566-17575. doi: 10.1021/acsomega.1c02074. eCollection 2021 Jul 13.
The oxygen evolution reaction (OER) and the hydrogen evolution reaction occurred at the anode and cathode, which depends on the electronic structure, morphology, electrochemically active surface area, and charge-transfer resistance of the electrocatalyst. Transition metals like cobalt, nickel, and iron have better OER and oxygen reduction reaction activities. At the same time, transition-metal oxide/carbon hybrid has several applications in electrochemical energy conversion reactions. The rich catalytic site of transition metals and the excellent conductivity of carbon material make these materials as a hopeful electrocatalyst in OER. Carbon-incorporated LaFeCoO was prepared by a simple solution combustion method for the development of the best performance of the electrocatalyst. The catalyst can deliver 10 mA/cm current density at an overpotential of 410 mV with better catalytic stability. The introduction of carbon material improves the dispersion ability of the catalyst and the electrical conductivity. The Tafel slope and onset potential of the best catalyst are 49.1 mV/dec and 1.55 V, respectively.
析氧反应（OER）和析氢反应分别在阳极和阴极发生，这取决于电催化剂的电子结构、形态、电化学活性表面积和电荷转移电阻。钴、镍和铁等过渡金属具有较好的析氧反应和氧还原反应活性。同时，过渡金属氧化物/碳杂化物在电化学能量转换反应中有多种应用。过渡金属丰富的催化位点和碳材料优异的导电性使这些材料成为析氧反应中很有前景的电催化剂。通过简单的溶液燃烧法制备了碳掺杂的LaFeCoO，以开发性能最佳的电催化剂。该催化剂在410 mV的过电位下可提供10 mA/cm²的电流密度，具有较好的催化稳定性。碳材料的引入提高了催化剂的分散能力和电导率。最佳催化剂的塔菲尔斜率和起始电位分别为49.1 mV/dec和1.55 V。
