MoS2 for beyond lithium-ion batteries

Abstract

As a typical transition-metal chalcogenide material, molybdenum disulfide (MoS2) has received tremendous attention because of its unique layered structure and versatile chemical, electronic, and optical properties. With the focus of this Perspective on the energy storage area, one of the most important contributions of MoS2 is that it sparked the birth of the rechargeable lithium battery in the early 1980s, which later formed the foundation of commercial lithium batteries. After four decades, admitting that MoS2 is still playing a significant role in the lithium-ion battery field and considerable effort was made to decipher the mechanism through ex situ and in situ studies and by means of MoS2 nanostructure engineering that advances the lithium battery performance, it is also used in beyond lithium-ion batteries, such as sodium, magnesium, calcium, and aluminum energy storage systems. Such alternative battery systems are desirable because of the safety concerns of lithium and the depletion of lithium reserves and corresponding increase in cost. In this Perspective, recent development on the fabrication of novel MoS2 nanostructures was discussed, followed by the scrutinization of their application in beyond lithium-ion batteries and the in situ/operando methods involved in these studies. Finally, a brief summary and outlook that may help with the future advancement of the beyond lithium-ion batteries are presented.

Acid–Alkaline Electrolyte for the Development of High-Energy Density Zn-Ion Batteries through Structural Modification of MoS2 by MnO2

“…13,38 The values of b equal to 0.5 and 1 obtained from the log(v) versus log(i) diagram indicated the diffusion-controlled and capacitive-controlled currents, respectively. 13,40 The calculated values of b were found to be ∼0.54, 0.62, 0.67, and 0.59 for peaks P1, P2, P3, and P4, respectively, as displayed in Figure 4b. This finding implied that the electrochemical charge storage was influenced by the ion diffusion redox conversion process.…”

“…Characteristic P1 and P4 and P2 and P3 redox peaks were assigned to the redox transitions of heterogeneous molybdenum (Mo 6+ ↔ Mo 5+ ↔ Mo 4+ ) and manganese (Mn 4+ ↔ Mn 3+ ↔ Mn 2+ ) oxidation states due to the co-extraction/ insertion of H + and Zn 2+ ions and the deposition/dissolution reaction of Zn. 7,10,19,39,40 The current response enhanced with increasing the scan rate from 0.2 to 1 mV s −1 , suggesting the reversible extraction/insertion and deposition/dissolution of H + and Zn 2+ ions. 13,27,38 In addition, the electrochemical performance of the Zn//MoS 2 @δ-MnO 2 device was analyzed by fabricating a coin cell to know the impact of the "H" cell in different pHs of the electrolyte.…”

Toward layered MoS2 anode for harvesting superior lithium storage

“…49,50 However, the pure ball milling method cannot give full play to the advantages of the layered structure of MoS 2 . 51 Additionally, ball milling has the ease of coupling with numerous auxiliary methods to obtain nanostructure-like sheets and akes of the desired dimensions and composition by altering the process conditions. 2,26,50,52,53 Therefore, we proposed ultrasonic-assisted ball milling.…”

Morphology and Catalytic Performance of MoS2 Hydrothermally Synthesized at Various pH Values

“…Moreover, it has been utilized in hydrogen storage containers [9], manganese and lithium batteries [10][11][12], and lubricants [13,14]. Recent studies have especially focused on the application of MoS 2 -based electrodes in beyond-lithium-ion batteries [15,16]. Further, several researchers have thoroughly reviewed the synthesis and structure of MoS 2 [2,3] and its applications in fields such as optoelectronics [17,18].…”