A high-performance free-standing Zn anode for flexible zinc-ion batteries
- 13 May 2021
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Nanoscale
- Vol. 13 (22), 10100-10107
- https://doi.org/10.1039/d1nr01266e
Abstract
Zinc-ion batteries (ZIBs) have attracted significant attention owing to their high safety, high energy density, and low cost. ZIBs have been studied as a potential energy device for portable and flexible electronics. Here, a highly flexible free-standing Zn anode is fabricated using a simple spin-coating technique, and its application in ZIBs is demonstrated. The free-standing Zn anode precursor is formed by mixing Zn particles with carbon nanotubes and poly (vinylidene fluoride)-co-hexafluoropropylene (PVDF-HFP). The hexafluoropropylene group in PVDF-HFP improves the mechanical properties of the free-standing Zn anode, whereas the carbon nanotubes created percolation conduction in the composite electrode, leading an increased electrical conductivity of the anode. Owing to the excellent electrical conductivity and high specific surface area of the free-standing Zn anode, ZIBs with high capacity, rate performance, and mechanical flexibility are achieved. The volumetric energy density of the ZIBs reaches 8.22 mWh cm-3 with a battery thickness of 0.4 mm. This work demonstrates that free-standing Zn anodes are promising anodes for flexible ZIBs.Keywords
Funding Information
- National Key Research and Development Program of China (2018YFC0810200)
- Shenzhen Science and Technology Innovation Program (GJHZ20190820091203667, KQTD20190929172522248, JCYJ20190806145609284)
- National Natural Science Foundation of China (21927810, 21703204)
This publication has 30 references indexed in Scilit:
- An Ultrastable and High‐Performance Flexible Fiber‐Shaped Ni–Zn Battery based on a Ni–NiO Heterostructured Nanosheet CathodeAdvanced Materials, 2017
- A high-capacity and long-life aqueous rechargeable zinc battery using a metal oxide intercalation cathodeNature Energy, 2016
- A Flexible Quasi‐Solid‐State Nickel–Zinc Battery with High Energy and Power Densities Based on 3D Electrode DesignAdvanced Materials, 2016
- Flexible Sodium‐Ion Pseudocapacitors Based on 3D Na2Ti3O7 Nanosheet Arrays/Carbon Textiles AnodesAdvanced Functional Materials, 2016
- Reversible aqueous zinc/manganese oxide energy storage from conversion reactionsNature Energy, 2016
- Free‐Standing Conducting Polymer Films for High‐Performance Energy DevicesAngewandte Chemie, 2015
- Enhancement on Cycle Performance of Zn Anodes by Activated Carbon Modification for Neutral Rechargeable Zinc Ion BatteriesJournal of the Electrochemical Society, 2015
- Synthesis and electrochemical performance of ZnCo2O4 for lithium-ion battery applicationElectrochimica Acta, 2015
- New crystal structure and discharge efficiency of poly(vinylidene fluoride-hexafluoropropylene)/poly(methyl methacrylate) blend filmsRSC Advances, 2014
- Development of highly flexible and ultra-low permeation rate thin-film barrier structure for organic electronicsThin Solid Films, 2013