scholarly journals Uniform gallium oxyhydroxide nanorod anodes with superior lithium-ion storage

RSC Advances ◽  
2019 ◽  
Vol 9 (60) ◽  
pp. 34896-34901
Author(s):  
Jingjing Feng ◽  
Bowen Fu ◽  
Liang Fang ◽  
Fang Wang ◽  
Xin Zhang ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Reversible Capacity ◽  
Rate Performance ◽  
Ion Storage

The hydrothermal GaOOH nanorods with uniform morphology show highly reversible capacity and superior rate performance with boosted pseudocapacitance contribution.

scholarly journals Nickel-Embedded Carbon Materials Derived from Wheat Flour for Li-Ion Storage

Materials ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 4611
Author(s):  
Wen Ding ◽  
Xiaozhong Wu ◽  
Yanyan Li ◽  
Shuo Wang ◽  
Shuping Zhuo
Keyword(s):  
Anode Material ◽  
Wheat Flour ◽  
Lithium Ion ◽  
Nanocrystalline Structure ◽  
Reversible Capacity ◽  
Nickel Nitrate ◽  
Carbon Anode ◽  
Ion Storage ◽  
Superior Electrochemical Properties

The biomass-based carbons anode materials have drawn significant attention because of admirable electrochemical performance on account of their nontoxicity and abundance resources. Herein, a novel type of nickel-embedded carbon material (nickel@carbon) is prepared by carbonizing the dough which is synthesized by mixing wheat flour and nickel nitrate as anode material in lithium-ion batteries. In the course of the carbonization process, the wheat flour is employed as a carbon precursor, while the nickel nitrate is introduced as both a graphitization catalyst and a pore-forming agent. The in situ formed Ni nanoparticles play a crucial role in catalyzing graphitization and regulating the carbon nanocrystalline structure. Mainly owing to the graphite-like carbon microcrystalline structure and the microporosity structure, the NC-600 sample exhibits a favorable reversible capacity (700.8 mAh g−1 at 0.1 A g−1 after 200 cycles), good rate performance (51.3 mAh g−1 at 20 A g−1), and long-cycling durability (257.25 mAh g−1 at 1 A g−1 after 800 cycles). Hence, this work proposes a promising inexpensive and highly sustainable biomass-based carbon anode material with superior electrochemical properties in LIBs.

Ethanol thermal reduction synthesis of hierarchical MoO2–C hollow spheres with high rate performance for lithium ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105558-105564 ◽  
Author(s):  
Lingxing Zeng ◽  
Xiaoxia Huang ◽  
Xi Chen ◽  
Cheng Zheng ◽  
Renpin Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Hollow Spheres ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Thermal Reduction ◽  
High Rate ◽  
Rate Performance ◽  
High Rate Performance

Hierarchical MoO2–C hollow spheres were initially synthesized, which exhibited large reversible capacity and excellent high rate performance for lithium-ion batteries.

scholarly journals W2C/WS2 Alloy Nanoflowers as Anode Materials for Lithium-Ion Storage

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1336 ◽  
Author(s):  
Thang Phan Nguyen ◽  
Il Tae Kim
Keyword(s):  
Electrochemical Performance ◽  
Anode Materials ◽  
Transition Metal Dichalcogenides ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Facile Hydrothermal Method ◽  
Initial Discharge ◽  
Ion Storage ◽  
Metal Dichalcogenides ◽  
Prepared Alloy

Recently, composites of MXenes and two-dimensional transition metal dichalcogenides have emerged as promising materials for energy storage applications. In this study, W2C/WS2 alloy nanoflowers (NFs) were prepared by a facile hydrothermal method. The alloy NFs showed a particle size of 200 nm–1 μm, which could be controlled. The electrochemical performance of the as-prepared alloy NFs was investigated to evaluate their potential for application as lithium-ion battery (LIB) anodes. The incorporation of W2C in the WS2 NFs improved their electronic properties. Among them, the W2C/WS2_4h NF electrode showed the best electrochemical performance with an initial discharge capacity of 1040 mAh g−1 and excellent cyclability corresponding to a reversible capacity of 500 mAh g−1 after 100 cycles compared to that of the pure WS2 NF electrode. Therefore, the incorporation of W2C is a promising approach to improve the performance of LIB anode materials.

Functionalized Carbonaceous Materials as Cathode for Lithium-Ion Batteries

MRS Advances ◽  
2016 ◽  
Vol 1 (45) ◽  
pp. 3037-3042 ◽  
Author(s):  
Hai Zhong ◽  
Chunhua Wang ◽  
Zhibin Xu ◽  
Fei Ding ◽  
Xingjiang Liu
Keyword(s):  
Activated Carbon ◽  
High Performance ◽  
Carbon Materials ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Carbon Particles ◽  
Ion Storage ◽  
Activated Carbon Particles ◽  
Storage Buffer ◽  
A Current

ABSTRACTActivated carbon materials are integrated into functionalization of graphene nano-sheets to serve as a high-power lithium cathode. The electrochemical performance shows that the composite displays the highest reversible capacity (c. 170 mAh g-1) comparing with functionalized graphene and activated carbon. Also, approximately 92% of its capacity can be retained after 4,000 cycles at a current of 1 A g-1. Moreover, the composite exhibits an excellent rate performance, a reversible capacity of 90 mAh g-1 even at 6 A g-1, which corresponds to the power density of 15.2 kW kg-1 and energy density of 227 Wh kg-1, respectively. The high performance of this composite can be attributed to the fact that the activated carbon particles not only reduce the graphene sheet stacking thus making it easier for ions to diffuse, but also act as an ion storage buffer against accelerating electron transfer.

Cr3+-doped Li3VO4 for enhanced Li+ storage

2019 ◽  
Vol 13 (02) ◽  
pp. 2050005
Author(s):  
Guisheng Liang ◽  
Xingxing Jin ◽  
Cihui Huang ◽  
Lijie Luo ◽  
Yongjun Chen ◽  
...  
Keyword(s):  
Low Cost ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Rate Performance ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
High Specific Capacity ◽  
Safe Working

Li3VO4 has gained significant attention as a promising anode material for lithium-ion batteries owing to its high specific capacity, low cost and safe working potential. Unfortunately, its disappointing electronic conductivity limits its rate performance. To address this problem, a series of Cr[Formula: see text]-doped Li3VO4 compounds are synthesized by solid-state reaction. The obtained Li[Formula: see text]Cr[Formula: see text]V[Formula: see text]O4 compounds ([Formula: see text] and 0.02) have the same orthorhombic crystal structure (Pnm21 space group), suggesting the successful Cr[Formula: see text] doping in Li3VO4. Compared with Li3VO4, Li[Formula: see text]Cr[Formula: see text]V[Formula: see text]O4 exhibits a two orders of magnitude larger electronic conductivity. Additional benefits of the Cr[Formula: see text] doping include the increase of the Li[Formula: see text] diffusion coefficient and the decrease of the particle size. Consequently, Li[Formula: see text]Cr[Formula: see text]V[Formula: see text]O4 displays not only a large reversible capacity (363[Formula: see text]mAh g[Formula: see text] at 60[Formula: see text]mA g[Formula: see text] and superior cyclic stability (86.6% capacity retention after 1000 cycles at 1200[Formula: see text]mA g[Formula: see text] but also decent rate performance (147[Formula: see text]mAh g[Formula: see text] at 1200[Formula: see text]mA g[Formula: see text].

Synthesis of Nitrogen and Phosphorus Dual-Doped Graphene Oxide as High-Performance Anode Material for Lithium-Ion Batteries

2020 ◽  
Vol 20 (12) ◽  
pp. 7673-7679
Author(s):  
Ke Wang ◽  
Zhi Li
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Performance ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Nitrogen And Phosphorus ◽  
Xrd Pattern ◽  
Ion Storage ◽  
Doped Graphene

Nitrogen and phosphorus dual-doped graphene oxide was prepared by directly calcining a mixture of pure graphene oxide, urea (nitrogen source), and 1,2-bis(diphenylphosphino)methane (phosphorous source). The morphology and composition of the obtained dual-doped graphene oxide were confirmed by SEM, TEM, XRD pattern, Raman spectrum, and XPS. The nitrogen and phosphorous dual-doped graphene oxide was tested as an anode material of lithium-ion batteries (LIBs). The cycle and rate performance of the dual-doped graphene oxide were also examined. The dualdoped graphene oxide exhibited a superior initial discharge capacity of 2796 mAh·g−1 and excellent reversible capacity of 1200 mAh·g−1 at a current density of 100 mA·g−1 after 200 charge/discharge cycles, suggesting that the dual-doping of nitrogen and phosphorous is an effective way to enhance lithium-ion storage for graphene oxide.

scholarly journals Easy preparation of SnO2@carbon composite nanofibers with improved lithium ion storage properties

2010 ◽  
Vol 25 (8) ◽  
pp. 1516-1524 ◽  
Author(s):  
Zunxian Yang ◽  
Guodong Du ◽  
Zaiping Guo ◽  
Xuebin Yu ◽  
Zhixin Chen ◽  
...  
Keyword(s):  
Anode Material ◽  
Carbon Nanofibers ◽  
Lithium Ion ◽  
Carbon Matrix ◽  
Reversible Capacity ◽  
Carbon Composite ◽  
Constant Current ◽  
Thermal Treatments ◽  
Ion Storage ◽  
Potential Use

SnO2@carbon nanofibers were synthesized by a combination of electrospinning and subsequent thermal treatments in air and then in argon to demonstrate their potential use as an anode material in lithium ion battery applications. The as-prepared SnO2@carbon nanofibers consist of SnO2 nanoparticles/nanocrystals encapsulated in a carbon matrix and contain many mesopores. Because of the charge pathways, both for the electrons and the lithium ions, and the buffering function provided by both the carbon encapsulating the SnO2 nanoparticles and the mesopores, which tends to alleviate the volumetric effects during the charge/discharge cycles, the nanofibers display a greatly improved reversible capacity of 420 mAh/g after 100 cycles at a constant current of 100 mA/g, and a sharply enhanced reversible capacity at higher rates (0.5, 1, and 2 C) compared with pure SnO2 nanofibers, which makes it a promising anode material for lithium ion batteries.

Carbon nanofiber bridged two-dimensional titanium carbide as a superior anode for lithium-ion batteries

2015 ◽  
Vol 3 (27) ◽  
pp. 14096-14100 ◽  
Author(s):  
Zongyuan Lin ◽  
Dongfei Sun ◽  
Qing Huang ◽  
Jun Yang ◽  
Michel W. Barsoum ◽  
...  
Keyword(s):  
Titanium Carbide ◽  
Lithium Ion Batteries ◽  
Carbon Nanofiber ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Two Dimensional ◽  
Rate Performance ◽  
Hybrid Particles

With the help of CNF conductive bridges, Ti3C2/CNF hybrid particles exhibited significantly enhanced reversible capacity and excellent rate performance.

Hierarchical CuO octahedra inherited from copper metal–organic frameworks: high-rate and high-capacity lithium-ion storage materials stimulated by pseudocapacitance

2017 ◽  
Vol 5 (25) ◽  
pp. 12828-12837 ◽  
Author(s):  
Xiaoshi Hu ◽  
Chao Li ◽  
Xiaobing Lou ◽  
Qi Yang ◽  
Bingwen Hu
Keyword(s):  
Room Temperature ◽  
High Capacity ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
Copper Metal ◽  
Ion Storage ◽  
Metal Organic ◽  
Temperature Transformation ◽  
High Rate Performance

Hierarchically structured porous CuO octahedron (HPCO): room-temperature transformation from a copper MOF and promotion of stable high capacity and high rate performance for lithium-ion batteries by pseudocapacitance.

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