In Situ Grown CoMn2O4 3D‐Tetragons on Carbon Cloth: Flexible Electrodes for Efficient Rechargeable Zinc–Air Battery Powered Water Splitting Systems
- 22 October 2021
- Vol. 17 (47), 2103613
- https://doi.org/10.1002/smll.202103613
Abstract
The integration of energy conversion and storage systems such as electrochemical water splitting (EWS) and rechargeable zinc–air battery (ZAB) is on the vision to provide a sustainable future with green energy resources. Herein, a unique strategy for decorating 3D tetragonal CoMn2O4 on carbon cloth (CMO–U@CC) via a facile one-pot in situ hydrothermal process, is reported. The highly exposed morphology of 3D tetragons enhances the electrocatalytic activity of CMO–U@CC. This is the first demonstration of such a bifunctional activity of CMO–U@CC in an EWS system; it achieves a nominal cell voltage of 1.610 V @ 10 mA cm−2. Similarly, the fabricated rechargeable ZAB delivers a specific capacity of 641.6 mAh gzn−1, a power density of 135 mW cm−2, and excellent cyclic stability (50 h @ 10 mA cm−2). Additionally, a series of flexible solid-state ZABs are fabricated and employed to power the assembled CMO–U@CC-based water electrolyzer. To the best of the authors’ knowledge, this is the first demonstration of an in situ-grown binder-free CMO–U@CC as a flexible multifunctional electrocatalyst for a built-in integrated rechargeable ZAB-powered EWS system.Keywords
Funding Information
- National Research Foundation of Korea (NRF‐2016M3D1A1021141)
- Korea Institute of Energy Technology Evaluation and Planning
This publication has 108 references indexed in Scilit:
- Shape-Controlled Synthesis of Pd Nanocrystals and Their Catalytic ApplicationsAccounts of Chemical Research, 2012
- Surfactant Removal for Colloidal Nanoparticles from Solution Synthesis: The Effect on Catalytic PerformanceACS Catalysis, 2012
- High capacity anode materials for Li-ion batteries based on spinel metal oxides AMn2O4 (A = Co, Ni, and Zn)Journal of Materials Chemistry, 2011
- Density functional theory in surface chemistry and catalysisProceedings of the National Academy of Sciences of the United States of America, 2011
- Nanostructured Pt-alloy electrocatalysts for PEM fuel cell oxygen reduction reactionChemical Society Reviews, 2010
- An experimental study on the performance of a zinc air fuel cell with inexpensive metal oxide catalysts and porous organic polymer separatorsJournal of Industrial and Engineering Chemistry, 2010
- Efficient Polymer Light‐Emitting Diode Using Air‐Stable Metal Oxides as ElectrodesAdvanced Materials, 2009
- Materials for electrochemical capacitorsNature Materials, 2008
- Direct access to thermally stable and highly crystalline mesoporous transition-metal oxides with uniform poresNature Materials, 2008
- Influence of the Precipitation Agent in the Deposition−Precipitation on the Formation and Properties of Au Nanoparticles Supported on Al2O3The Journal of Physical Chemistry B, 2006