Fig. 2From: Na4Mn9O18/Carbon Nanotube Composite as a High Electrochemical Performance Material for Aqueous Sodium-Ion Batteries a XRD patterns of NMO/CNT and NMO. b Raman spectrum of NMO/CNT and NMO. c TG curves of the NMO/CNT composite at a heating rate of 10 °C/min under airBack to article page