An ultra-long life aqueous full K-ion battery
- 17 December 2020
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry A
- Vol. 9 (5), 2822-2829
- https://doi.org/10.1039/d0ta10033a
Abstract
Aqueous full K-ion batteries (AFKIBs) featuring high safety, low cost, and environmental friendliness represent the future of advanced energy storage technologies. However, current AFKIB systems are still in need of suitable electrolytes and electrode materials, not to mention durability. Here, we report a “rocking-chair” type aqueous full K-ion system with KTi2(PO4)3/C crystalline nanoparticles as the anode material with near zero-strain, iron hexacyanoferrate as the cathode, and 21 m KCF3SO3 as a water-in-salt electrolyte. Benefitting from the fast reaction kinetics and high structural stability of KTi2(PO4)3/C, the full battery achieves a high capacity retention of 96.7% over 30 000 cycles, excellent rate performance with full charge and discharge in 1 minute, and a high energy density of 47.3 W h kg−1. Demonstration of the performance of this AFKIB system expands the avenues of exploration for large-scale energy storage.Keywords
Funding Information
- Science, Technology and Innovation Commission of Shenzhen Municipality (JCYJ20170818085823773, JCYJ20180504165506495)
This publication has 39 references indexed in Scilit:
- Hybrid energy storage: the merging of battery and supercapacitor chemistriesChemical Society Reviews, 2015
- Aqueous Rechargeable Li and Na Ion BatteriesChemical Reviews, 2014
- A review of available methods and development on energy storage; technology updateRenewable and Sustainable Energy Reviews, 2014
- Room-temperature stationary sodium-ion batteries for large-scale electric energy storageEnergy & Environmental Science, 2013
- Opportunities and challenges for a sustainable energy futureNature, 2012
- Electrical Energy Storage for the Grid: A Battery of ChoicesScience, 2011
- Nickel Hexacyanoferrate Nanoparticle Electrodes For Aqueous Sodium and Potassium Ion BatteriesNano Letters, 2011
- Lithium-ion batteries. A look into the futureEnergy & Environmental Science, 2011
- Electrochemical Energy Storage for Green GridChemical Reviews, 2011
- Battery energy storage technology for power systems—An overviewElectric Power Systems Research, 2009