An enhanced non-noble perovskite-based oxygen electrocatalyst for efficient oxygen reduction and evolution reactions

Fundamental Understanding and Application of Ba0.5Sr0.5Co0.8Fe0.2O3−δPerovskite in Energy Storage and Conversion: Past, Present, and Future

“…For instance, BSCF composited with Vulcan XC-72R carbon having O- or N-containing functional groups was found with improved OER activity, which may be ascribed to the cocatalytic role of functionalized carbon during OER . Other than directly composited with commercial carbon additives, BSCF was also composited with a range of functional carbon materials, including N-doped mesoporous carbon, graphitic carbon nitride, and carbon quantum dots (CQDs), which all contributed considerably to the OER catalysis. For example, hybridizing CQDs with BSCF nanofibers fabricated by electrospinning led to increases in the specific surface area and oxygen vacancy content as well as the creation of a synergistic effect, which cooperatively brought about a 5-fold growth in OER activity .…”

High-Efficiency of Bi-Functional-Based Perovskite Nanocomposite for Oxygen Evolution and Oxygen Reduction Reaction: An Overview

“…Dengjie and co-workers developed a bifunctional perovskite-based composite material for ORR and OER applications [ 12 ]. The composite material was fabricated by the combination of Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3−δ (BSCF), graphitic carbon nitride (g-C 3 N 4 ) and Vulcan carbon (VC).…”

“… ( a ) ORR catalytic activities of g–C 3 N 4 , BSCF, BSCF/g–C 3 N 4 , g–C 3 N 4 –VC, BSCF/VC and BSCF/g–C 3 N 4 –VC ( b ) and OER catalytic activities of g–C 3 N 4 , BSCF, g–C 3 N 4 –VC, BSCF/VC and BSCF/g–C 3 N 4 –VC measured by LSV at a rotating rate of 1600 rpm in O 2 -saturated 0.1 M KOH solution at a scan rate of 5 mV s −1 . Copyright 2020 by the Elsevier [ 12 ]. …”

“…Since the 1980s, the cubic crystal structure of ABO 3 -type perovskites has received attention as themost promising electrode candidate for highly efficient electrocatalysts in both ORR and ORE, because of cost-effectiveness, fascinating electrochemical properties, high-power density, high-energy-density and long-term cyclic durability in electric vehicles [ 8 , 9 , 10 , 11 ]. Herein, an interesting bi-functional oriented Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3−δ based g-C 3 N 4 -supported Vulcan carbon composite electrode catalyst also expedites an efficient suitable air cathode for the ORR and OER process [ 12 ]. The cost-effective electrode materials of double perovskite CaCu 3 Ti 4 O 12 (CCTO) have gained significant attention due to lower overpotential, excellent electrocatalytic performances and high electrode stability for both ORR and OER reactions [ 13 ].…”

Clarifying the Role of the Reducers-to-Oxidizers Ratio in the Solution Combustion Synthesis of Ba0.5Sr0.5Co0.8Fe0.2O3-δ Oxygen Electrocatalysts

“…Later on, in 2004, BSCF was also proposed as a new and compelling cathode material for Solid Oxide Fuel Cells (SOFC), in view of its oxygen affinity and mixed ionic-electronic conductivity [10]. In addition, BSCF-based compositions were intensively studied as metal-air batteries oxygen electrocatalysts materials for oxygen reduction/evolution reactions [11][12][13]. With the increasing interest to develop reversible electrochemical systems, BSCF has also been studied as a constituent of the anode in solid oxide electrolysis cells (SOEC) [14], as well as in cells with proton conducting electrolytes [15,16] thanks to its proton-conduction potential due to its significant hydration ability, especially when doped with an alkaline element [17].…”