Carbon nanosheets derived from reconstructed lignin for potassium and sodium storage with low voltage hysteresis

Porous graphene-like MoS2/carbon hierarchies for high-performance pseudocapacitive sodium storage

“…6a shows the CV curves at various sweep rates for MoS 2 /C100, in which the characteristic redox peaks are well preserved with current increasing upon increasing the sweep rate, indicating a pseudocapacitive controlled sodium storage behavior. 3 The relationship can be further revealed by eqn (1): 60 Δ i = av b where i is the peak current, v is the scan rate, and a and b are adjustable parameters. Note that the b value reflects the sodium storage mechanism via either a diffusion ( b = 0.5) or pseudocapacitance ( b = 1) controlled process.…”

Tremella-like Mo and N Codoped Graphitic Nanosheets by In Situ Carbonization of Phthalocyanine for Potassium-Ion Battery

“…Figure e displays the Mo 2 C-MoC/AC-N anode’s rate performance compared to the previously reported carbon anodes in PIBs. The Mo 2 C-MoC/AC-N anode exhibits a remarkable performance at high rates, outperforming graphite, reduced graphene oxide, activated graphite, phosphorus/oxygen dual-doped graphene, nitrogen/oxygen dual-doped hard carbon, N- and O-rich carbon nanofiber, nitrogen-doped carbon nanotubes, black P/C composite, few-layer N-doped graphene, N/S codoped carbon microboxes, nitrogen-doped bamboo-like carbon nanotubes, and reconstructed lignin-derived carbon nanosheets …”

Evolution of “adsorption–insertion” K+ storage behaviors in flower-like carbons with tunable heteroatom doping and graphitic structures

“…The potential hysteresis is calculated by using the voltage difference between V c and V d (V c À V d ). 63 The V c À V d decreases from 0.66 V for N,S-CNSs to 0.30 V for N,S-CNS-900 and 0.19 V for N,S-CNS-1200. It should be emphasized that N,S-CNS-1200 with the lowest potential hysteresis is benecial for practical application in PIBs.…”