Abstract
Herein, we present the synthesis and characterization of negative (a hard carbon/carbon black composite) and positive (K0.3MnO2) active materials for K-ion batteries as well as their combination in a non-aqueous K-ion cell. The hard carbon/carbon black composite can deliver up to 200 mAh g−1 while the layered birnessite K0.3MnO2 delivers up to 136 mAh g−1. The K-ion cell exhibits an interesting and encouraging cycling performance for 100 cycles. These exciting new insights demonstrate the potential of K-ion batteries, which are worth to be further investigated in greater detail.
Highlights
Since the 1970s, lithium, sodium- and potassium-based rechargeable battery technologies have been studied in parallel
Interest lies in finding suitable anode materials which can be applicable in K-ion full cells, reducing the risks associated with K metal
More detailed information regarding the evolution of potential profiles upon cycling and at increased current rates as well as cyclic voltammetry can be found in the SI (Figure S2)
Summary
Since the 1970s, lithium-, sodium- and potassium-based rechargeable battery technologies have been studied in parallel. Only one report dealing with an unconventional K-ion oxygen cell, employing an oxygen cathode, is available, albeit with limited cycling.[25] All of the other cell tests published to date using non-aqueous electrolytes, both with respect to potential anode and cathode materials, were conducted using K metal as a counter electrode and are considered to be either a K-metal cell or a K half cell.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
