Atomically Thin Mesoporous Co3O4 Layers Strongly Coupled with N‐rGO Nanosheets as High‐Performance Bifunctional Catalysts for 1D Knittable Zinc–Air Batteries
- 6 December 2017
- journal article
- research article
- Published by Wiley in Advanced Materials
- Vol. 30 (4)
- https://doi.org/10.1002/adma.201703657
Abstract
Under development for next‐generation wearable electronics are flexible, knittable, and wearable energy‐storage devices with high energy density that can be integrated into textiles. Herein, knittable fiber‐shaped zinc–air batteries with high volumetric energy density (36.1 mWh cm−3) are fabricated via a facile and continuous method with low‐cost materials. Furthermore, a high‐yield method is developed to prepare the key component of the fiber‐shaped zinc–air battery, i.e., a bifunctional catalyst composed of atomically thin layer‐by‐layer mesoporous Co3O4/nitrogen‐doped reduced graphene oxide (N‐rGO) nanosheets. Benefiting from the high surface area, mesoporous structure, and strong synergetic effect between the Co3O4 and N‐rGO nanosheets, the bifunctional catalyst exhibits high activity and superior durability for oxygen reduction and evolution reactions. Compared to a fiber‐shaped zinc–air battery using state‐of‐the‐art Pt/C + RuO2 catalysts, the battery based on these Co3O4/N‐rGO nanosheets demonstrates enhanced and stable electrochemical performance, even under severe deformation. Such batteries, for the first time, can be successfully knitted into clothes without short circuits under external forces and can power various electronic devices and even charge a cellphone.Keywords
Funding Information
- National Natural Science Foundation of China (51125016, U1601216)
- Natural Science Foundation of Tianjin City (16JCYBJC17600)
- U.S. Department of Energy (DE‐AC02‐06CH11357)
This publication has 59 references indexed in Scilit:
- Electrically Rechargeable Zinc–Air Batteries: Progress, Challenges, and PerspectivesAdvanced Materials, 2016
- Scalable Fabrication of Nanoporous Carbon Fiber Films as Bifunctional Catalytic Electrodes for Flexible Zn‐Air BatteriesAdvanced Materials, 2016
- Carbon Nanotubes and Graphene for Flexible Electrochemical Energy Storage: from Materials to DevicesAdvanced Materials, 2016
- A flexible solid-state electrolyte for wide-scale integration of rechargeable zinc–air batteriesEnergy & Environmental Science, 2015
- Advances in Wearable Fiber‐Shaped Lithium‐Ion BatteriesAdvanced Materials, 2015
- Flexible High‐Energy Polymer‐Electrolyte‐Based Rechargeable Zinc–Air BatteriesAdvanced Materials, 2015
- Recent advances in zinc–air batteriesChemical Society Reviews, 2014
- Advances and challenges for flexible energy storage and conversion devices and systemsEnergy & Environmental Science, 2014
- Metallic anodes for next generation secondary batteriesChemical Society Reviews, 2013
- Advanced zinc-air batteries based on high-performance hybrid electrocatalystsNature Communications, 2013