Journal
ACS APPLIED ENERGY MATERIALS
Volume 2, Issue 12, Pages 8633-8640Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.9b01540
Keywords
bifunctional effect; Nano-LSCF@Pd matrix; electrocatalyst; lithium ion battery; oxygen evolution reaction (OER); oxygen reduction reaction (ORR)
Funding
- Ministry of Education [2018R1D1A1B07048181]
- Technology Development Program to Solve Climate Changes of the National Research Foundation (NRF) grant - Korea government (Ministry of Science and ICT) [2017M1A2A2044931]
- Technology Innovation Program - Ministry of Trade, Industry and Energy (MOTIE) of Korea [10080417, 20004963]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10080417, 20004963] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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One of the important challenges with a bifunctional electrocatalyst is reducing the large overpotential involved in the slow kinetics of the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) at the air electrode in a metal air redox battery. Here, we present a nanostructured LSCF@Pd matrix of nanostructured LSCF (Nano-LSCF) with palladium to enhance the bifunctional catalytic activity in Li-O-2 battery applications. Pd nanoparticles can be perfectly supported on the surface of the Nano-LSCF, and the ORR catalytic activity was properly improved. When Nano-LSCF@Pd was applied to a cathode catalyst in Li-O-2 batteries, the first discharge ability (16912 mA h g(-1)) was higher than that of Nano-LSCF (6707 mA h g(-1)) and the cycling property improved. These results demonstrate that the Pd-deposited nanostructured perovskite is a capable catalyst to enhance the ORR activity of LSCF as a promising bifunctional electrocatalyst.
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