In situinterface engineering of NiSe with interlinked conductive networks for high energy density sodium-ion half/full batteries

Abstract

Transition metal selenides (TMS) are compounds composed of transition metals and selenium, and they offer a range of chemical and structural diversity that can be exploited to optimize their performance...

Tailoring the shell thickness of yolk–shell structured carbon microspheres: applications in metal selenide and carbon composite microspheres for enhanced sodium ion storage properties

“…In the subsequent anodic sweep, the sharp peak at around 1.83 V corresponded to the restitution and splitting of the nickel selenide and cobalt selenide nanocrystals. 56,57 After the second cycle, all four electrodes formed heterointerfaced nickel selenide and cobalt selenide nanocomposites, and they showed the same reduction (0.98 V) and oxidation (1.84 V) peaks. Additionally, CV testing for C-YS 1/1, C-YS 2/1, C-YS 4/1, and C-YS 16/1 electrodes was conducted within a potential range of 0.001–3.0 V ( versus Na + /Na) during the initial 5 cycles at a scan rate of 0.1 mV s −1 , as shown in Fig.…”