TY - JOUR
T1 - Rational design of multifunctional electrocatalyst
T2 - An approach towards efficient overall water splitting and rechargeable flexible solid-state zinc–air battery
AU - Ramakrishnan, Shanmugam
AU - Velusamy, Dhinesh Babu
AU - Sengodan, Sivaprakash
AU - Nagaraju, Goli
AU - Kim, Do Hwan
AU - Kim, Ae Rhan
AU - Yoo, Dong Jin
N1 - Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning ( NRF-2020R1A2B5B01001458 ). This work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (No. 20214000000040 , Innovation Research Center for Next Generation Battery-based Materials, Parts and Applied Technology).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2022/1
Y1 - 2022/1
N2 - Constructing an electrocatalyst with highly durable active and cost-effective core-shell with a porous carbon nanosheet for the development of high efficiency energy conversion and storage devices. Herein, we developed core-shell nickel-iron oxide on a highly porous N-doped carbon nanosheet (CS-NFO@PNC) via a facile solvothermal calcination route. The optimized CS-NFO@PNC-700 showed remarkable electrocatalytic activity towards ORR (0.85 V vs RHE), OER ƞ10 = 217 mV, and HER ƞ10 = 200 mV with excellent durability towards the corresponding half-cell reactions. Further, we investigated the ORR, OER, and HER mechanistic pathways of the electrocatalyst using the density functional theory. Finally, we fabricated a rechargeable liquid electrolyte-based zinc–air battery with CS-NFO@PNC-700 as the cathode which displayed an improved power density of 130 mW cm−2 at 217 mA cm−2 with excellent durability of 180 h. The rechargeable flexible quasi-solid-state zinc–air battery with CS-NFO@PNC-700 air cathode, which exhibited excellent long term durability over 40 h at 5 mA cm−2.
AB - Constructing an electrocatalyst with highly durable active and cost-effective core-shell with a porous carbon nanosheet for the development of high efficiency energy conversion and storage devices. Herein, we developed core-shell nickel-iron oxide on a highly porous N-doped carbon nanosheet (CS-NFO@PNC) via a facile solvothermal calcination route. The optimized CS-NFO@PNC-700 showed remarkable electrocatalytic activity towards ORR (0.85 V vs RHE), OER ƞ10 = 217 mV, and HER ƞ10 = 200 mV with excellent durability towards the corresponding half-cell reactions. Further, we investigated the ORR, OER, and HER mechanistic pathways of the electrocatalyst using the density functional theory. Finally, we fabricated a rechargeable liquid electrolyte-based zinc–air battery with CS-NFO@PNC-700 as the cathode which displayed an improved power density of 130 mW cm−2 at 217 mA cm−2 with excellent durability of 180 h. The rechargeable flexible quasi-solid-state zinc–air battery with CS-NFO@PNC-700 air cathode, which exhibited excellent long term durability over 40 h at 5 mA cm−2.
KW - Density functional theory
KW - Multifunctional electrocatalyst
KW - Nickel-iron oxide
KW - Overall water splitting
KW - Zinc–air batteries
UR - http://www.scopus.com/inward/record.url?scp=85116168504&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2021.120752
DO - 10.1016/j.apcatb.2021.120752
M3 - Article
AN - SCOPUS:85116168504
SN - 0926-3373
VL - 300
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
M1 - 120752
ER -
