Apple Leftovers Make Better Batteries.
The new carbon-based material for sodium-ion batteries can be extracted from apples.
Photo: KIT/HIU
The material developed for the positive electrode consists of several layers of sodium oxides. This active material goes without the expensive and environmentally hazardous element cobalt that is frequently used in active materials of commercial lithium-ion batteries. At the laboratory, the new active material, in which electrochemical energy storage proper takes place, reaches the same efficiency, cyclic stability, capacity, and voltage without any cobalt.
Both materials mark an important step towards the development of inexpensive and environmentally friendly sodium-ion batteries. The results are presented in two expert journals:
The HIU was established in January 2011 by KIT, member of the Helmholtz Association, in cooperation with Ulm University. With the German Aerospace Center (DLR) and the Center for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW), two other renowned institutions are involved in the HIU as associated partners. The international team of about 125 scientists at HIU works on the further development of the fundamentals of viable energy storage systems for stationary and mobile use.
Contacts and sources:
Daniel Messling
Monika Landgraf
Karlsruhe Institute of Technology
Citation: ”Apple Biowaste-Derived Hard Carbon as a Powerful Anode Material for Na-Ion Batteries“ ChemElectroChem, doi: 10.1002/celc.201500437;
Citation: “Layered Na-Ion Cathodes with Outstanding Performance Resulting from the Synergetic Effect of Mixed P- and O-type Phases” Advanced Energy Materials, doi: 10.1002/aenm.201501555.
Source: http://www.ineffableisland.com/2016/02/apple-leftovers-make-better-batteries.html
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