Uniform small-sized MoS2 from novel solution-based microwave-assisted method with exceptional reversible lithium storage properties

Nanoscale ◽  
2018 ◽  
Vol 10 (32) ◽  
pp. 15222-15228 ◽  
Author(s):  
Xuehui Tian ◽  
Qiuming Gao ◽  
Hang Zhang ◽  
Zeyu Li ◽  
Hong Xiao ◽  
...  
Keyword(s):  
Specific Capacity ◽  
Rate Capability ◽  
Cyclic Stability ◽  
Lithium Storage ◽  
Microwave Assisted ◽  
Pyrolysis Method ◽  
Microwave Assisted Method ◽  
Storage Properties

Small-sized MoS2 prepared via a solution-based microwave-assisted precursor pyrolysis method exhibited remarkably large specific capacity, excellent rate capability and fascinatingly high cyclic stability.

General synthesis of three-dimensional alkali metal vanadate aerogels with superior lithium storage properties

2016 ◽  
Vol 4 (37) ◽  
pp. 14408-14415 ◽  
Author(s):  
Guozhao Fang ◽  
Jiang Zhou ◽  
Caiwu Liang ◽  
Yangsheng Cai ◽  
Anqiang Pan ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Specific Capacity ◽  
Three Dimensional ◽  
Rate Capability ◽  
Lithium Storage ◽  
High Specific Capacity ◽  
General Synthesis ◽  
Storage Properties ◽  
Good Rate Capability ◽  
General Method

We demonstrate a general method for the preparation of a series of 3D alkali metal vanadate aerogels, including NaV3O8, NaV6O15, and K0.25V2O5. The resulting aerogels exhibit excellent Li+ storage properties in terms of high specific capacity, good rate capability, and outstanding cyclic stability as cathodes for LIBs.

A facile synthesis of hierarchical MoS2 nanotori with advanced lithium storage properties

2018 ◽  
Vol 42 (13) ◽  
pp. 10935-10939 ◽  
Author(s):  
Kai Xie ◽  
Zhenghao Liu ◽  
Yourong Wang ◽  
Guangsen Song ◽  
Siqing Cheng
Keyword(s):  
Rate Capability ◽  
Reversible Capacity ◽  
Cyclic Performance ◽  
Facile Synthesis ◽  
Lithium Storage ◽  
Storage Properties ◽  
Good Rate Capability

The easily prepared hierarchical MoS2 nanotori demonstrate superior reversible capacity, good rate capability and excellent cyclic performance.

Constructing zigzag-like hollow mesoporous nanospheres MoO2/C with superior lithium storage performance

2021 ◽  
Author(s):  
Wencai Zhao ◽  
Y.F. Yuan ◽  
S.M. Yin ◽  
Gaoshen Cai ◽  
S.Y. Guo
Keyword(s):  
Reaction Kinetics ◽  
Discharge Capacity ◽  
Amorphous Carbon ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Structure Design ◽  
Structure Stability ◽  
Lithium Storage

Abstract Hollow mesoporous nanospheres MoO2/C are successfully constructed through metal chelating reaction between molybdenum acetylacetone and glycerol as well as the Kirkendall effect induced by diammonium hydrogen phosphate. MoO2 nanoparticles coupled by amorphous carbon are assembled to unique zigzag-like hollow mesoporous nanosphere with large specific surface area of 147.7 m2 g-1 and main pore size of 8.7 nm. The content of carbon is 9.1%. As anode material for lithium-ion batteries, the composite shows high specific capacity and excellent cycling performance. At 0.2 A g-1, average discharge capacity stabilizes at 1092 mAh g-1. At 1 A g-1 after 700 cycles, the discharge capacity still reaches 512 mAh g-1. Impressively, the composite preserves intact after 700 cycles. Even at 5 A g-1, the discharge capacity can reach 321 mAh g-1, exhibiting superior rate capability. Various kinetics analyses demonstrate that in electrochemical reaction, the proportion of the surface capacitive effect is higher, and the composite has relatively high diffusion coefficient of Li ions and fast faradic reaction kinetics. Excellent lithium storge performance is attributed to the synergistic effect of zigzag-like hollow mesoporous nanosphere and amorphous carbon, which improves reaction kinetics, structure stability and electronic conductivity of MoO2. The present work provides a new useful structure design strategy for advanced energy storage application of MoO2.

Synergistic effect between flake graphite and small-sized graphene in lithium storage

2021 ◽  
pp. 2150031
Author(s):  
Hai Li ◽  
Chunxiang Lu
Keyword(s):  
Synergistic Effect ◽  
Lithium Ion Batteries ◽  
Individual Component ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Flake Graphite ◽  
Effective Strategy ◽  
Lithium Storage

As anode material for lithium-ion batteries, graphite has the disadvantage of relatively low specific capacity. In this work, a simple yet effective strategy to overcome the disadvantages by using a composite of flake graphite (FG) and small-sized graphene (SG) has been developed. The FG/SG composite prepared by dispersing FG and SG (90:10 w/w) in ethanol and drying delivers much higher specific capacity than that of individual component except for improved rate capability. More surprisingly, FG/SG composite delivers higher reversible capacity than its theoretical value calculated according to the theoretical capacities of graphite and graphene. Therefore, a synergistic effect between FG and SG in lithium storage is clearly discovered. To explain it, we propose a model that abundant nanoscopic cavities were formed due to physical adhesion between FG and SG and could accommodate extra lithium.

Lithium storage properties of Li2MoO3 and its effect as a cathode additive in full cells

2021 ◽  
Author(s):  
Taolin Zhao ◽  
Shaokang Chen ◽  
Xingyue Gao ◽  
Yuxia Zhang
Keyword(s):  
Liquid Phase ◽  
Electrochemical Performance ◽  
Solid Phase ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Phase Method ◽  
Lithium Storage ◽  
Liquid Phase Method ◽  
Cathode Additive ◽  
Storage Properties

High-performance lithium–ion batteries (LIBs) are the main development direction of future energy storage devices. However, most LIBs still face a problem of high first irreversible capacity loss. Pre-lithiation technology can increase the content of active lithium source and compensate the loss of active lithium during the first cycle. Adding lithium supplement additive to the cathode provides an effective way to improve the electrochemical performance of LIBs. Here, Li2MoO3 has been investigated as a cathode additive in the full cells. In order to optimize its preparation, Li2MoO3 has been prepared by three different methods, including solid-phase method, liquid-phase method and ultrasonic method. Based on material characterization and electrochemical performance tests, Li2MoO3 material prepared by liquid-phase method shows the best lithium storage properties and chosen as a cathode additive in the LiNi[Formula: see text]Co[Formula: see text]Mn[Formula: see text]O2/SiO@C full cells. The addition of Li2MoO3 has successfully improved the electrochemical performance of the full cell. The first discharge specific capacity increases from 103.9 mAh g[Formula: see text] to 130.4 mAh g[Formula: see text]. In short, Li2MoO3 material is a promising cathode additive for LIBs.

scholarly journals Hierarchical tubular structures constructed from ultrathin TiO2(B) nanosheets for highly reversible lithium storage

2015 ◽  
Vol 8 (5) ◽  
pp. 1480-1483 ◽  
Author(s):  
Han Hu ◽  
Le Yu ◽  
Xuehui Gao ◽  
Zhan Lin ◽  
Xiong Wen (David) Lou
Keyword(s):  
High Capacity ◽  
Rate Capability ◽  
Cycling Stability ◽  
Tubular Structures ◽  
Lithium Storage ◽  
Storage Properties

Hierarchical tubular structures constructed from ultrathin TiO2(B) nanosheets show excellent electrochemical lithium storage properties with a high capacity, excellent rate capability and cycling stability.

Novel Fe2P/graphitized carbon yolk/shell octahedra for high-efficiency hydrogen production and lithium storage

2016 ◽  
Vol 4 (25) ◽  
pp. 9923-9930 ◽  
Author(s):  
Jiao Yang ◽  
Ya Ouyang ◽  
Huijuan Zhang ◽  
Haitao Xu ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Production ◽  
High Efficiency ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Storage ◽  
Graphitized Carbon

Fe2P/GC yolk/shell octahedra exhibit a superior specific capacity and rate capability for LIBs and an excellent catalytic activity toward the HER.

Facile synthesis of β-MnO2/polypyrrole nanorods and their enhanced lithium-storage properties

RSC Advances ◽  
2016 ◽  
Vol 6 (24) ◽  
pp. 19952-19956 ◽  
Author(s):  
Meng Wang ◽  
Qianxu Yang ◽  
Tiandong Zhang ◽  
Baokun Zhu ◽  
Guangda Li
Keyword(s):  
Oxidative Polymerization ◽  
Rate Capability ◽  
Cycling Performance ◽  
Chemical Oxidative Polymerization ◽  
Facile Synthesis ◽  
Lithium Storage ◽  
Storage Properties

The β-MnO2/PPy composites were synthesized through in situ chemical oxidative polymerization. The β-MnO2/PPy exhibit excellent cycling performance and rate capability when used as anode for LIBs.

Polypyrrole-assisted synthesis of roselike MoS2/nitrogen-containing carbon/graphene hybrids and their robust lithium storage performances

RSC Advances ◽  
2015 ◽  
Vol 5 (77) ◽  
pp. 62624-62629 ◽  
Author(s):  
Zhiyan Guo ◽  
Yang Zhong ◽  
Zongwei Xuan ◽  
Changming Mao ◽  
Fanglin Du ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Lithium Storage ◽  
High Specific Capacity

MoS2/NC/G hybrids exhibit a high specific capacity, and superior rate capability for lithium ion batteries.

SnO2 nanocrystals anchored on N-doped graphene for high-performance lithium storage

2015 ◽  
Vol 51 (17) ◽  
pp. 3660-3662 ◽  
Author(s):  
Wei Zhou ◽  
Jinxian Wang ◽  
Feifei Zhang ◽  
Shumin Liu ◽  
Jianwei Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Solvothermal Method ◽  
Lithium Storage ◽  
One Pot ◽  
Microwave Assisted ◽  
Graphene Composite ◽  
Sno2 Nanocrystals ◽  
Doped Graphene ◽  
Storage Properties

A SnO2–N-doped graphene composite with high-performance lithium storage properties is synthesized by a fast, facile and one-pot microwave-assisted solvothermal method.

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