What is it about?
Herein, we demonstrate a simple one‐step pyrolysis approach to develop an amorphous hard carbon material from commercial cellulose for high‐performance potassium‐ion batteries (KIB). The larger interlayer spacing (∼0.4 nm) alongside the electronegative oxygen functional groups promotes potassium‐ion storage.
Photo by Claudio Schwarz | @purzlbaum on Unsplash
Why is it important?
Potassium‐ion storage is being explored by researchers for its advantages in forming graphite‐based intercalation compounds, with cost‐effective production compared to lithium‐ion systems. However, its poor performance in graphite‐based platforms, owing to the volume expansion required for intercalation, has demanded alternative materials for reversible potassiation.
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This page is a summary of: Potassium‐Ion Storage in Cellulose‐Derived Hard Carbon: The Role of Functional Groups, Batteries & Supercaps, July 2020, Wiley, DOI: 10.1002/batt.202000116.
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