Rational design of multifunctional electrocatalyst: An approach towards efficient overall water splitting and rechargeable flexible solid-state zinc-air battery

被引：181

作者：

Ramakrishnan, Shanmugam ^{[1
]}

Velusamy, Dhinesh Babu ^{[2
,3
]}

Sengodan, Sivaprakash ^{[4
]}

Nagaraju, Goli ^{[4
]}

Kim, Do Hwan ^{[1
,5
,6
]}

Kim, Ae Rhan ^{[1
,7
]}

Yoo, Dong Jin ^{[1
,7
]}

机构：

[1] Jeonbuk Natl Univ, Dept Energy Storage, Convers Engn Grad Sch BK21 FOUR, Jeollabuk Do 54896, South Korea

[2] Univ Manchester, Natl Graphene Inst, Manchester M13 9PL, Lancs, England

[3] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

[4] Imperial Coll London, Dept Mat, London SW7 2AZ, England

[5] Jeonbuk Natl Univ, Div Sci Educ, Jeonju 54896, Jeollabuk Do, South Korea

[6] Jeonbuk Natl Univ, Inst Fus Sci, Jeonju 54896, Jeollabuk Do, South Korea

[7] Jeonbuk Natl Univ, R&D Educ Ctr Whole Life Cycle R&D Fuel Cell Syst, Hydrogen & Fuel Cell Res Ctr, Dept Life Sci, Jeollabuk Do 54896, South Korea

来源：

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY | 2022年 / 300卷

基金：

新加坡国家研究基金会;

关键词：

Multifunctional electrocatalyst; Nickel-iron oxide; Overall water splitting; Density functional theory; OXYGEN REDUCTION; POROUS CARBON; BIFUNCTIONAL CATALYST; EVOLUTION REACTION; MOF COMPOSITE; ACTIVE-SITES; NANOSHEETS; NICKEL; COBALT; OXIDE;

D O I：

10.1016/j.apcatb.2021.120752

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 r10 = 217 mV, and HER r10 = 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.

引用

页数：14

共 86 条

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