Fibrous asymmetric supercapacitor based on wet spun MXene/PAN Fiber-derived multichannel porous MXene/CF negatrode and NiCo2S4 electrodeposited MXene/CF positrode

Ice crystal-assisted intercalation of PANI within Ti3C2Tx MXene thin films for flexible supercapacitor electrodes with simultaneously high mechanical strength and rate performance

“…Furthermore, a b-value of 0.94 is obtained for the anodic peaks of the I-PANI/ MXene electrode, which is not only higher than that of the control samples but also comparable to or higher than the values reported in previous studies. [52][53][54] All of these results conrm that our prepared I-PANI/MXene electrode possesses a predominantly nondiffusion limited capacitive behaviour, which is favourable for achieving superior rate capability. The galvanostatic charge/discharge (GCD) curves of the I-PANI/MXene electrode were recorded at different current densities from 1 to 20 A g −1 .…”

Oxygen vacancies meet partial S substitution: an effective strategy to achieve obvious synergistic effects and adjustable electrochemical behavior in NiFe-LDH for enhanced OER and capacitive performance

“…6e, the b values of the NiFe-LDH and NiFe-LDHS electrodes at different potentials are compared. 79 Clearly, NiFe-LDHS showed a significantly smaller b value region (0.56–0.74), demonstrating that the energy storage behavior of the electrode transformed from a surface-controlled process to a diffusion-controlled process after S doping. According to the equation i = k 1 v + k 2 v 1/2 , this transformation was further verified by calculating the contributions of the surface-controlled and diffusion-controlled processes.…”

Identifying the intrinsic active site in bimetallic Co3S4/Ni3S2 feathers on MXene nanosheets as a heterostructure for efficient oxygen evolution reaction

“…47 In the Ti 2p XPS spectrum, four peaks centred at 464.0, 461.6, 458.3 and 455.6 eV can be observed, wherein the peaks at 455.6 and 461.6 eV are ascribed to the Ti-C bonds, and those at 458.3 and 464.0 eV can be assigned to the Ti-O bonds.(Fig. S3 †) [48][49][50] The XPS spectrum of S 2p contains spinorbit doublet peaks at 162.1 eV (S 2p 3/2 ) and 163.3 eV (S 2p 1/2 ), and two shake-up satellite peaks at approximately 168.0 and 169.1 eV ascribed to the S n 2− and SO x species (Fig. 3b).…”