Advanced MoSe₂/Carbon Electrodes in Li/Na‐Ions Batteries

Abstract

Secondary charge batteries have captured numerous attentions, owing to their abundant raw, portability, and high energy density. As the main ions‐storage carrier, the electrode materials serve vital roles on the properties of whole battery system. Currently, MoSe2 is regarded as rising star of transition metal dichalcogenides, displaying unique layered structure, high electronic conductivity, as well as narrow energy band. These advantages enable their widely application on hydrogen evolution reactions and solar cells. Recently, a plenty of researching activities on MoSe2/carbon are triggered due to large interplanar spacing and high ions/e− migration rate. In this review, the recent achievements of diverse MoSe2/carbon on great energy‐storage domains are solidly summarized from bonding types (surface‐loading, internal‐wrapped) and dimensional controlling (1D nanotubes/nanofibers, 2D graphene/nanosheets, 3D carbon framework/sphere). Meanwhile, the related Li/Na ions‐storage mechanisms are also concluded. Furthermore, for MoSe2/carbon with better electrochemical properties, the opportunities and perspectives in the future are also suggested. This review throws light on the systematic developments of advanced MoSe2/carbon, and confirms its exploring potential on lithium‐ion batteries/sodium‐ion batteries.

Porous Microspheres Comprising CoSe2 Nanorods Coated with N-Doped Graphitic C and Polydopamine-Derived C as Anodes for Long-Lived Na-Ion Batteries

“…Generally, the capacitive effect of the electrode material is closely related to the reaction kinetics, implying that the transport kinetics is enhanced when the percentage of the capacitive-controlled process is higher. Therefore, the total stored charge in the electrode material was separated into capacitive-and diffusion-controlled processes for the quantitative analysis of the capacity contribution to the current response using the following equation [64,65]:…”

“…where k 1 v and k 2 v 1/2 are the capacitive and diffusion contributions, respectively, while k 1 and k 2 are the constants obtained from the slope and intercept of the i(V)/v 1/2 versus v 1/2 plot, respectively [64,65]. As shown in Fig.…”

Redox mediator induced electrochemical reactions at the electrode‐electrolyte interface: Making sodium‐ion supercapacitors a competitive technology

“…Na-ion based energy storage technologies are fast coming out of the shadow of their more illustrious Liion systems. [1][2][3][4][5] Both Na-ion batteries and supercapacitors have started to deliver promising energy and power densities. [6][7][8][9] But, in the case of supercapacitors, a quantum jump is much more sorted so that they can compete with carbon-based electric doublelayer capacitors (EDLCs), Li-ion or other metal-oxides based pseudocapacitors.…”

Enhancing Mg2+ and Mg2+/Li+ Storage by Introducing Active Defect Sites and Edge Surfaces in MoSe2

“…Molybdenum selenide (MoSe 2 ), as a typical layered material similar to graphite, has a larger interlayer distance (6.46 Å) and higher conductivity caused by smaller band gap (1.1 eV) [14–16] . Hence, such features give the MoSe 2 great potential as cathode material for metal‐ion batteries, which enable fast charge and ion transfer during charge/discharge process [17,18] .…”