scholarly journals Glucose-Assisted One-Pot Hydrothermal Synthesis of Hierarchical-Structured MoS2/C Quasi-Hollow Microspheres for High-Performance Lithium Ion Battery

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 837
Author(s):  
Xingang Liu ◽  
Jiang Tan ◽  
Xi Li ◽  
Chuhong Zhang
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Hydrothermal Process ◽  
Rate Capability ◽  
Lithium Ion ◽  
Nucleating Agent ◽  
Hollow Microspheres ◽  
One Pot ◽  
Bulk Mos2 ◽  
First Time

In this work, hierarchical MoS2/C quasi-hollow microspheres are prepared by a one-pot hydrothermal process with the addition of glucose. The glucose is not only inclined to form the roundish sphere in the completion of the synthesis of MoS2, but at the same time the microspheres formed by the glucose can act as the nuclei on which the MoS2 grows. Glucose, acting as a nucleating agent, has the advantages of being low-cost and environmentally friendly, which can simplify the fabrication process. The interiors of the MoS2/C samples are multi-hole and quasi-hollow, which is beneficial for the insertion and extraction of lithium ions. For the first time, we demonstrate that hierarchical-structured MoS2/C quasi-hollow microspheres exhibit an excellent cycling stability and rate capability in lithium ion batteries (LIBs) and are significantly superior to the bulk MoS2. The method presented in this article may provide a simple, clean. and economical strategy for the preparation of MoS2/C microspheres as a feasible and promising anode material for LIBs.

Three-Dimensional MoS2/Graphene Hybrid Aerogel as Free-Standing, High-Performance Electrode for Supercapacitor

NANO ◽  
2020 ◽  
Vol 15 (05) ◽  
pp. 2050062
Author(s):  
Zhaolei Meng ◽  
Xiaojian He ◽  
Song Han ◽  
Zijian Hu
Keyword(s):  
Porous Structure ◽  
Surface Area ◽  
High Performance ◽  
Large Scale ◽  
Low Cost ◽  
Hydrothermal Process ◽  
Three Dimensional ◽  
Rate Capability ◽  
Free Standing ◽  
Hybrid Aerogel

Carbon materials are generally employed as supercapacitor electrodes due to their low- cost, high-chemical stability and environmental friendliness. However, the design of carbon structures with large surface area and controllable porous structure remains a daunt challenge. In this work, a three-dimensional (3D) hybrid aerogel with different contents of MoS2 nanosheets in 3D graphene aerogel (MoS2-GA) was synthesized through a facial hydrothermal process. The influences of MoS2 content on microstructure and subsequently on electrochemical properties of MoS2-GA are systematically investigated and an optimized mass ratio with MoS2: GA of 1:2 is chosen to achieve high mechanical robustness and outstanding electrochemical performance in the hybrid structure. Due to the large specific surface area, porous structure and continuous charge transfer network, such MoS2-GA electrodes exhibit high specific capacitance, good rate capability and excellent cyclic stability, showing great potential in large-scale and low-cost fabrication of high-performance supercapacitors.

A novel calendula-like MnNb2O6 anchored on graphene sheet as high-performance intercalation pseudocapacitive anode for lithium-ion capacitors

2019 ◽  
Vol 7 (6) ◽  
pp. 2855-2863 ◽  
Author(s):  
Xu Zhang ◽  
Jinyu Zhang ◽  
Shuying Kong ◽  
Kai Zhu ◽  
Jun Yan ◽  
...  
Keyword(s):  
Graphene Sheet ◽  
Anode Material ◽  
High Performance ◽  
Storage Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Charge Storage ◽  
First Time ◽  
Superior Cycling Stability

In this paper, for the first time, we investigated MnNb2O6 as a new rate capability type anode material for lithium-ion capacitors (LICs), which exhibit excellent charge storage capacity and reasonably superior cycling stability.

scholarly journals A stable TiO2–graphene nanocomposite anode with high rate capability for lithium-ion batteries

RSC Advances ◽  
2020 ◽  
Vol 10 (50) ◽  
pp. 29975-29982 ◽  
Author(s):  
Umer Farooq ◽  
Faheem Ahmed ◽  
Syed Atif Pervez ◽  
Sarish Rehman ◽  
Michael A. Pope ◽  
...  
Keyword(s):  
Anode Materials ◽  
High Performance ◽  
Hydrothermal Process ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Microwave Hydrothermal ◽  
Reduced Graphene ◽  
Graphene Nanocomposite ◽  
Li Ion

A rapid microwave hydrothermal process is adopted for the synthesis of titanium dioxide and reduced graphene oxide nanocomposites as high-performance anode materials for Li-ion batteries.

Facile synthesis of porous CoFe2O4 nanosheets for lithium-ion battery anodes with enhanced rate capability and cycling stability

RSC Advances ◽  
2014 ◽  
Vol 4 (52) ◽  
pp. 27488-27492 ◽  
Author(s):  
Xiayin Yao ◽  
Junhua Kong ◽  
Xiaosheng Tang ◽  
Dan Zhou ◽  
Chenyang Zhao ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Anode Materials ◽  
High Performance ◽  
Low Cost ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Facile Synthesis

Porous CoFe2O4 nanosheets are prepared via a low-cost and scalable process and are shown to be high-performance anode materials for lithium-ion batteries.

Ni0.33Co0.66(OH)F hollow hexagons woven by MWCNTs for high-performance lithium-ion batteries

2015 ◽  
Vol 3 (41) ◽  
pp. 20690-20697 ◽  
Author(s):  
Huaping Chen ◽  
Yufei Zhang ◽  
Jun Yang ◽  
Ziyang Dai ◽  
Nina Fu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Low Cost ◽  
Lithium Ion ◽  
One Pot ◽  
Multi Walled Carbon Nanotubes ◽  
Template Free ◽  
Walled Carbon Nanotubes

A template-free two-step strategy is successfully developed for the low-cost one pot production of Ni0.33Co0.66(OH)F hollow hexagons woven by multi-walled carbon nanotubes (MWCNTs).

scholarly journals One-Pot Synthesis of α-Fe2O3 Nanospindles as High-Performance Lithium-Ion Battery Anodes

NANO ◽  
2018 ◽  
Vol 13 (02) ◽  
pp. 1850018 ◽  
Author(s):  
Yanhua Ding ◽  
Bing Liu ◽  
Rongsheng Cai ◽  
Tuo Xin ◽  
Chen Li ◽  
...  
Keyword(s):  
Anode Materials ◽  
Polyvinylidene Fluoride ◽  
High Performance ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
One Pot ◽  
Structure Directing Agent ◽  
Uniform Size ◽  
Scanning Transmission

Hematite nanospindles with a uniform size of [Formula: see text]270[Formula: see text]nm in length and [Formula: see text]90[Formula: see text]nm in width are prepared using a facile one-step hydrothermal method. Polyvinylpyrrolidone (PVP) serves as a structure-directing agent to control the primary morphology and aggregations. When evaluated as anode materials for lithium-ion batteries (LIBs), the electrode of sodium alginate (SA) binder exhibits a much better electrochemical performance than that with the polyvinylidene fluoride (PVDF) binder. Remarkably, the electrode using SA binder can deliver a high reversible specific capacity of 979[Formula: see text]mAh[Formula: see text]g[Formula: see text] after 50 cycles and prominent rate capability. The microstructural evolution of the nanospindles after the electrochemical cycling is investigated by scanning transmission electron microscopy (STEM). Our results may provide important mechanistic insights for the design of nanostructured anode materials for LIBs.

Hierarchical flower-like Ni3V2O8/Co3V2O8 composites as advanced anode materials for lithium-ion batteries

2020 ◽  
Vol 13 (03) ◽  
pp. 2050014
Author(s):  
Yang Li ◽  
Feng Duan ◽  
Songli Liu ◽  
Cheng Peng
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Electronic Conductivity ◽  
Hydrothermal Process ◽  
Rate Capability ◽  
Lithium Ion ◽  
Energy Storage Devices ◽  
Lithium Storage ◽  
Storage Devices ◽  
One Step

Hierarchical flower-like Ni3V2O8/Co3V2O8 composites were prepared by a simple one-step hydrothermal process. When employed as an anode for lithium-ion batteries (LIBs), the fabricated Ni3V2O8/Co3V2O8 composites exhibited significantly improved lithium storage performances with superior discharge capacity (1142.7[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 100[Formula: see text]mA[Formula: see text]g[Formula: see text]), excellent cycling stability (933.2[Formula: see text]mAh[Formula: see text]g[Formula: see text] after 600 cycles at current density of 500[Formula: see text]mA[Formula: see text]g[Formula: see text]) and remarkable rate capability (607.6[Formula: see text]mAh[Formula: see text]g[Formula: see text] even at rate of 5000[Formula: see text]mA g[Formula: see text]). The superior electrochemical properties could be attributed to the hierarchical flower-like structure and impressive synergistic interplay between Ni3V2O8 and Co3V2O8, which resulted in improved electronic conductivity and stable mass transfer. This interesting hybridization strategy might open a new avenue to prepare micro/nanostructured composites for high-performance energy storage devices.

Superionic Lithium Intercalation through 2 nm x 2 nm Columns in the Crystallographic Shear Phase Nb18W8O69

2019 ◽  
Author(s):  
Kent Griffith ◽  
Clare Grey
Keyword(s):  
High Performance ◽  
Rate Capability ◽  
Block Size ◽  
Lithium Intercalation ◽  
Resonance Spectroscopy ◽  
Complex Metal Oxides ◽  
Battery Electrode ◽  
Crystallographic Shear ◽  
Battery Material ◽  
First Time

Nb18W8O69 (9Nb2O5×8WO3) is the tungsten-rich end-member of the Wadsley–Roth crystallographic shear (cs) structures within the Nb2O5–WO3 series. It has the largest block size of any known, stable Wadsley–Roth phase, comprising 5 ´ 5 units of corner-shared MO6 octahedra between the shear planes, giving rise to 2 nm ´ 2 nm blocks. Rapid lithium intercalation is observed in this new candidate battery material and 7Li pulsed field gradient nuclear magnetic resonance spectroscopy – measured in a battery electrode for the first time at room temperature – reveals superionic lithium conductivity. In addition to its promising rate capability, Nb18W8O69 adds a piece to the larger picture of our understanding of high-performance Wadsley–Roth complex metal oxides.

scholarly journals Synthesis, Structure and Diffusion Pathways of Fast Lithium-Ion Conductors in the Polymorphs α- and β-Li8SnP4

2021 ◽  
Author(s):  
Thomas F Fässler ◽  
Stefan Strangmüller ◽  
Henrik Eickkhoff ◽  
Wilhelm Klein ◽  
Gabriele Raudaschl-Sieber ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Lithium Ion ◽  
Conducting Materials ◽  
Increasing Demand ◽  
Battery Technology ◽  
Lithium Ion Conductors ◽  
And Diffusion ◽  
Ion Conductors

The increasing demand for a high-performance and low-cost battery technology promotes the search for Li+-conducting materials. Recently, phosphidotetrelates and aluminates were introduced as an innovative class of phosphide-based Li+-conducting materials...

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