Comparison of electrochemical performance of typical KIB full cells.

	Layered cathode	Hexacyanometallate cathode	Polyanionic cathode	Organic cathode
Cathode	P3-K0.69CrO2	K1.98Mn[Fe(CN)6]0.92	KLi3Fe(C2O4)3@C	PTCDA
Counterpart anode	Highly wrinkled carbon tube	KTiOPO4	Soft carbon	Graphite
Voltage range	0.1–3.6 V	2.0–4.4 V	1.5–4.5 V	1.25–3.5 V
Current density	100 mA g−1	20 mA g−1	360 mA g−1	30 mA g−1
Potassium storage capacity	52 mA h g−1	58 mA h g−1	80 mA h g−1	80 mA h g−1
Cycling durability	500 cycles	Unknown	200 cycles	50 cycles
Ref.	19	35	54	33