Co decoration of molybdenum sulfide and carbon for improving lithium ion capacity of large monolayer MXene cathodes

Molybdenum sulfide (MoS2) has become a potential anode of lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) due to its high theoretical capacity and low cost. However, the volume expansion, poor electrical conductivity and dissolution of polysulfides in the electrolyte during the cycling process severely limited its applications. Herein, few-layered MoS2@N-doped carbon (F-MoS2@NC) was synthesized through a facile solvothermal and annealing process. It was found that the addition of N-doped carbon precursor could significantly promote the formation of few-layered MoS2 and improve the performances of lithium and sodium storage. A high reversible capacity of 482.6 mA h g−1 at a high current density of 2000 mA g−1 could be obtained for LIBs. When used as anode material for SIBs, F-MoS2@NC hybrids could maintain a reversible capacity of 171 mA h g−1 at a high current density of 1,000 mA g−1 after 600 cycles. This work should provide new insights into carbon hybrid anode materials for both LIBs and SIBs.

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Semimetallic vanadium molybdenum sulfide for high-performance battery electrodes

Journal of Materials Chemistry A ◽

10.1039/c8ta00995c ◽

2018 ◽

Vol 6 (20) ◽

pp. 9411-9419 ◽

Cited By ~ 51

Author(s):

Qingfeng Zhang ◽

Longlu Wang ◽

Jue Wang ◽

Xinzhi Yu ◽

Junmin Ge ◽

...

Keyword(s):

Lithium Ion Batteries ◽

Electrode Material ◽

High Performance ◽

High Surface ◽

Volume Ratio ◽

Lithium Ion ◽

Diffusion Path ◽

Molybdenum Sulfide ◽

Two Dimensional

The ultrathin thickness and lateral morphology of a two dimensional (2D) MoS2 nanosheet contribute to its high surface-to-volume ratio and short diffusion path, rendering it a brilliant electrode material for lithium-ion batteries (LIBs).

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Reduced Graphene-Oxide-Encapsulated MoS2/Carbon Nanofiber Composite Electrode for High-Performance Na-Ion Batteries

Nanomaterials ◽

10.3390/nano11102691 ◽

2021 ◽

Vol 11 (10) ◽

pp. 2691

Author(s):

Su-Ho Cho ◽

Jong-Heon Kim ◽

Il-Gyu Kim ◽

Jeong-Ho Park ◽

Ji-Won Jung ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Anode Materials ◽

High Performance ◽

Carbon Nanofiber ◽

Electronic Conductivity ◽

High Capacity ◽

Lithium Ion ◽

Molybdenum Sulfide ◽

Reduced Graphene

Sodium-ion batteries (SIBs) have been increasingly studied due to sodium (Na) being an inexpensive ionic resource (Na) and their battery chemistry being similar to that of current lithium-ion batteries (LIBs). However, SIBs have faced substantial challenges in developing high-performance anode materials that can reversibly store Na+ in the host structure. To address these challenges, molybdenum sulfide (MoS2)-based active materials have been considered as promising anodes, owing to the two-dimensional layered structure of MoS2 for stably (de)inserting Na+. Nevertheless, intrinsic issues of MoS2—such as low electronic conductivity and the loss of active S elements after a conversion reaction—have limited the viability of MoS2 in practical SIBs. Here, we report MoS2 embedded in carbon nanofibers encapsulated with a reduced graphene oxide (MoS2@CNFs@rGO) composite for SIB anodes. The MoS2@CNFs@rGO delivered a high capacity of 345.8 mAh g−1 at a current density of 100 mA g−1 for 90 cycles. The CNFs and rGO were synergistically taken into account for providing rapid pathways for electrons and preventing the dissolution of S sources during repetitive conversion reactions. This work offers a new point of view to realize MoS2-based anode materials in practical SIBs.

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CuS2 sheets: a hidden anode material with a high capacity for sodium-ion batteries

Journal of Materials Chemistry C ◽

10.1039/d0tc04946h ◽

2021 ◽

Author(s):

Shaohua Lu ◽

Weidong Hu ◽

Xiaojun Hu

Keyword(s):

Lithium Ion Batteries ◽

Anode Material ◽

Low Cost ◽

High Capacity ◽

Lithium Ion ◽

Sodium Ion ◽

Sodium Ion Batteries

Due to their low cost and improved safety compared to lithium-ion batteries, sodium-ion batteries have attracted worldwide attention in recent decades.

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Studies on the lithium ion conduction in Ca0.95Li0.10WO4 using cold neutron radiography

Solid State Ionics ◽

10.1016/s0167-2738(96)00455-9 ◽

1996 ◽

Vol 91 (3-4) ◽

pp. 303-306 ◽

Cited By ~ 5

Author(s):

M Kamata

Keyword(s):

Cold Neutron ◽

Neutron Radiography ◽

Lithium Ion ◽

Ion Conduction ◽

Lithium Ion Conduction

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Synthesis and study of carbon nanostructured additives for lithium-ion batteries

BULLETIN of the L N Gumilyov Eurasian National University Chemistry Geography Ecology Series ◽

10.32523/2616-6771-2018-124-4-8-13 ◽

2018 ◽

Vol 125 (4) ◽

pp. 8-13

Author(s):

А.Б. Абдрахманова ◽

◽

В. А. Кривченко ◽

Н. М. Омарова

Keyword(s):

Lithium Ion Batteries ◽

Lithium Ion

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Evaluation of a molybdenum sulfide reference electrode in hot alkaline solutions

TAPPI Journal ◽

10.32964/tj9.7.35 ◽

2010 ◽

Vol 9 (7) ◽

pp. 35-41

Author(s):

OUTI A. HYÖKYVIRTA ◽

TOM E. GUSTAFSSON

Keyword(s):

Molybdenum Disulfide ◽

Surface Film ◽

Reference Electrode ◽

Exposure Period ◽

Molybdenum Sulfide ◽

Alkaline Solutions ◽

Internal Reference ◽

Cell Potential ◽

Pulp Digester ◽

Alkaline Sulfide

This investigation evaluated the applicability of a molybdenum sulfide reference electrode (MSRE) as an internal reference electrode for use in alkaline sulfide solutions over a range of pulp digester liquors at 170°C. The electrode remained stable during the exposure period of two weeks. The experimentally determined half cell potential of the MSRE is E = -0.91 VSHE. The surface of the MSRE was examined by scanning electron microscope (SEM) and electron spectroscopy for chemical analysis (ESCA) to verify the chemical composition of the thin surface film. Based on ESCA studies, the surface film contained molybdenum disulfide and sodium disulfide. During storage of the specimens, sulfide was partly oxidized to sodium sulfite in air. Next to the metallic molybdenum, a mixed molybdenum disulfide and molybdenum hydroxide layer was detected.

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