Transition metal dichalcogenides for alkali metal ion batteries: engineering strategies at the atomic level

2020 ◽  
Vol 13 (4) ◽  
pp. 1096-1131 ◽  
Author(s):  
Biao Chen ◽  
Dongliang Chao ◽  
Enzuo Liu ◽  
Mietek Jaroniec ◽  
Naiqin Zhao ◽  
...  
Keyword(s):  
Energy Storage ◽  
Transition Metal ◽  
Alkali Metal ◽  
Metal Ion ◽  
Transition Metal Dichalcogenides ◽  
Atomic Level ◽  
Charge Storage ◽  
Intrinsic Structure ◽  
Metal Dichalcogenides ◽  
Structure Engineering

This review provides enriched information for understanding the charge storage mechanisms of transition metal dichalcogenides (TMDs), as well as the importance of intrinsic structure engineering for enhancing the performance of TMDs in energy storage.

scholarly journals Exfoliated transition metal dichalcogenide nanosheets for supercapacitor and sodium ion battery applications

2019 ◽  
Vol 6 (8) ◽  
pp. 190437 ◽  
Author(s):  
Santanu Mukherjee ◽  
Jonathan Turnley ◽  
Elisabeth Mansfield ◽  
Jason Holm ◽  
Davi Soares ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Ion ◽  
Coulombic Efficiency ◽  
Transition Metal Dichalcogenides ◽  
Sodium Ion ◽  
Transition Metal Dichalcogenide ◽  
Composite Electrodes ◽  
Metal Dichalcogenides ◽  
Storage Technologies ◽  
Supercapacitor Applications

Growing concerns regarding the safety, flammability and hazards posed by Li-ion systems have led to research on alternative rechargeable metal-ion electrochemical storage technologies. Among the most notable of these are Na-ion supercapacitors and batteries, motivated, in part, by the similar electrochemistry of Li and Na ions. However, sodium ion batteries (SIBs) come with their own set of issues, especially the large size of the Na + ion, its relatively sluggish kinetics and low energy densities. This makes the development of novel materials and appropriate electrode architecture of absolute significance. Transition metal dichalcogenides (TMDs) have attracted a lot of attention in this regard due to their relative ease of exfoliation, diverse morphologies and architectures with superior electronic properties. Here, we study the electrochemical performance of Mo-based two-dimensional (2D) layered TMDs (e.g. MoS 2 , MoSe 2 and MoTe 2 ), exfoliated in a superacid, for battery and supercapacitor applications. The exfoliated TMD flakes were interfaced with reduced graphene oxide (rGO) to be used as composite electrodes. Electron microscopy, elemental mapping and Raman spectra were used to analyse the exfoliated material and confirm the formation of 2D TMD/rGO layer morphology. For supercapacitor applications in aqueous electrolyte, the sulfide-based TMD (MoS 2 ) exhibited the best performance, providing an areal capacitance of 60.25 mF cm −2 . For SIB applications, TMD electrodes exhibited significantly higher charge capacities than the neat rGO electrode. The initial desodiation capacities for the composite electrodes are 468.84 mAh g −1 (1687.82 C g −1 ), 399.10 mAh g −1 (1436.76 C g −1 ) and 387.36 mAh g −1 (1394.49 C g −1 ) for MoS 2 , MoSe 2 and MoTe 2 , respectively. Also, the MoS 2 and MoSe 2 composite electrodes provided a coulombic efficiency of near 100 % after a few initial cycles.

Super low work function of alkali-metal-adsorbed transition metal dichalcogenides

2017 ◽  
Vol 29 (31) ◽  
pp. 315702 ◽  
Author(s):  
Sol Kim ◽  
Man Young Lee ◽  
Seong Lee ◽  
Seung-Hoon Jhi
Keyword(s):  
Transition Metal ◽  
Alkali Metal ◽  
Work Function ◽  
Transition Metal Dichalcogenides ◽  
Metal Dichalcogenides

scholarly journals Phase Restructuring in Transition Metal Dichalcogenides for Highly Stable Energy Storage

ACS Nano ◽  
2016 ◽  
Vol 10 (10) ◽  
pp. 9208-9215 ◽  
Author(s):  
Kai Leng ◽  
Zhongxin Chen ◽  
Xiaoxu Zhao ◽  
Wei Tang ◽  
Bingbing Tian ◽  
...  
Keyword(s):  
Energy Storage ◽  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Metal Dichalcogenides

Role of alkali metal promoter in enhancing lateral growth of monolayer transition metal dichalcogenides

2017 ◽  
Vol 28 (36) ◽  
pp. 36LT01 ◽  
Author(s):  
Hyun Kim ◽  
Gang Hee Han ◽  
Seok Joon Yun ◽  
Jiong Zhao ◽  
Dong Hoon Keum ◽  
...  
Keyword(s):  
Transition Metal ◽  
Alkali Metal ◽  
Transition Metal Dichalcogenides ◽  
Lateral Growth ◽  
Metal Dichalcogenides

Atomically Thin Transition-Metal Dichalcogenides for Electrocatalysis and Energy Storage

Small Methods ◽  
2017 ◽  
Vol 1 (11) ◽  
pp. 1700156 ◽  
Author(s):  
Xiaochuan Duan ◽  
Jiantie Xu ◽  
Zengxi Wei ◽  
Jianmin Ma ◽  
Shaojun Guo ◽  
...  
Keyword(s):  
Energy Storage ◽  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Metal Dichalcogenides

Controlled synthesis and comparison of NiCo2S4/graphene/2D TMD ternary nanocomposites for high-performance supercapacitors

2016 ◽  
Vol 52 (59) ◽  
pp. 9251-9254 ◽  
Author(s):  
Jianfeng Shen ◽  
Pei Dong ◽  
Robert Baines ◽  
Xiaowei Xu ◽  
Zhuqing Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Transition Metal ◽  
High Performance ◽  
Electrode Materials ◽  
Synergistic Effects ◽  
Transition Metal Dichalcogenides ◽  
Controlled Synthesis ◽  
Metal Dichalcogenides

Novel ternary electrode materials based on graphene, NiCo2S4, and transition metal dichalcogenides were designed and fabricated with the intention of exploiting synergistic effects conducive to supercapacitive energy storage.

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