Compression-tolerant supercapacitor based on NiCo2O4/Ti3C2Tx MXene/reduced graphene oxide composite aerogel with insights from density functional theory simulations

Boron Nitride/Ti3C2Tx MXene Nanosheet/WS2 Nanostructure Ternary Composites for All-Solid-State Flexible Asymmetric Supercapacitors

“…41 Zhang et al assembled NiCo 2 O 4 with MXene/rGO, which achieved an Sp.C of 1633 F g −1 at 1 A g −1 and a cyclic stability of 86.6% after 10,000 cycles. 42 Inspired by the above discussion, this study reports a novel design of the WS 2 -decorated MXene (Ti 3 C 2 T x )/functionalized BN (MBN) heterostructure utilizing a facile hydrothermal method and further using it as a positive electrode for all-solidstate flexible asymmetric supercapacitors (ASASCs). Functionalization of boron nitride, as well as etching of a MAX phase (Ti 3 AlC 2 ), was performed via a one-pot reaction where BN was added in the etching solution (LiF/HCl) along with the MAX phase.…”

“…A Co 3 O 4 -doped MXene/rGO nanohybrid showed an excellent electrochemical performance with 8.25 Wh kg –1 energy density when used in an all-solid-state asymmetric supercapacitor . Zhang et al assembled NiCo 2 O 4 with MXene/rGO, which achieved an Sp.C of 1633 F g –1 at 1 A g –1 and a cyclic stability of 86.6% after 10,000 cycles …”

Heterostructures of MXenes and transition metal oxides for supercapacitors: an overview

“…146,147 In comparison with a pure metal oxide electrode, the MXene/metal oxide heterostructure offers a larger specific capacitance, greater rate capability, and more stable cycling performance due to its higher electrical conductivity and quicker electron transfer ability according to DFT calculations. 48 The electronic state and electronic structure can be tuned effectively by the hybrid structure, which supports the enhancement of electrochemical performance. For example, in 2023, Zhang et al confirmed the mechanism behind the better electrochemical performance of the NCO/MGA-300 electrode through DFT calculations 48 In this research an assembly of NiCo 2 O 4 (NCO) microtubes was laid on/into a Ti 3 C 2 T x MXene/ reduced graphene oxide aerogel (MGA).…”

“…34,[36][37][38][39][40][41][42][43][44][45] They show outstanding electrochemical properties, due to their inherently conductive carbide core and the possibility of charge transfer due to the presence of transition metals with flexible oxidation numbers. [48][49][50][51] Since the discovery of Ti 3 C 2 T x MXenes in 2011, several MXenes with unique properties have been synthesized and used as electrode materials for energy storage applications. 34,[36][37][38][39][40][41][42][43][44][45][52][53][54][55][56][57] Despite several suitable properties, MXene electrodes face certain issues during electrochemical testing, such as restacking of MXene sheets and oxidation.…”

“…Moreover, MXene surface terminations could be systematically directed to reduce the irreversible capacity since the electrochemical properties of MXenes greatly depend on the surface chemistry. [48][49][50][51][75][76][77][78][79][80] This minireview systematically focuses on the formation strategies of such heterostructures and highlights the aspects governing their improved energy storage capability.…”