Selective grafting of phosphorus onto Ti₃C₂T_x MXene enables a two-proton process and enhanced charge storage

Abstract

Ti3C2Tx MXene shows great promise as a supercapacitor electrode material owing to its high conductivity and pseudocapacitive nature. Phosphorus doping is an efficient strategy to boost its capacitance due to...

Enhancing ion storage and transport in Ti3C2Tz MXene via a “sacrificial cations” strategy

“…Similar phenomena have also been observed in related literature. 63,65 Additionally, a similar phenomenon was observed in the 150–300 cm −1 . Around 200 cm −1 for A 1g (Ti, O, C) such as Ti 3 C 2 O 2 , during the charging process (point A to C), the Raman peak at 208 cm −1 for A 1g gradually intensifies, while the peak at 265 cm −1 originating from A 1g (Ti, OH, C) such as Ti 3 C 2 (OH) 2 gradually weakens.…”

A quasi-solid-state self-healing flexible zinc-ion battery using a dual-crosslinked hybrid hydrogel as the electrolyte and Prussian blue analogue as the cathode material

“…3b shows CV curves at scanning rates from 0.1 to 1.0 mV s −1 . The scanning rate and peak current follow an empirical law of i = av b , 37 which is usually transformed into log( i ) = b log( v ) + log( a ), where the b value refers to the slope value obtained by plotting log( v , scanning rate) and log( i , peak current). The calculated b value of peak 1 and peak 2 is 0.976 and 0.550, which indicates both faradaic (diffusion-controlled) and non-faradaic (surface controlled capacitive behavior) processes (Fig.…”

Structure, Properties, and Preparation of MXene and the Application of Its Composites in Supercapacitors

“…MXene is a two-dimensional layered material obtained by corroding the A layer of the precursor MAX phase by selection, leaving behind the M layer and X layer [21,22]. The MAX phase's chemical formula is M n+1 AX n (n = 1, 2, 3), in which M stands for early transition metal elements such as Ti, Zr, V, Nb, Cr, Mo, A mainly consists of group III and IV elements such as Al, Ga, In, and X indicates carbon and/or nitrogen elements [23][24][25]. After the corroding by selection of the A layer in the MAX phase, the material retains its inherent crystal structure by using a chemical formula of M n+1 X n T x (n = 1, 2, 3), in which T represents surface functional groups like -OH, -O, and -F [26][27][28].…”