scholarly journals Solvents adjusted pure phase CoCO3 as anodes for high cycle stability

2021 ◽  
Author(s):  
Liming Liu ◽  
Xiaoxiao Huang ◽  
Zengyan Wei ◽  
Xiaoming Duan ◽  
Bo Zhong ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Diethylene Glycol ◽  
High Current Density ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Mesoporous Structure ◽  
Cycle Performance ◽  
High Specific Capacity ◽  
Pure Phase ◽  
High Theoretical Capacity

AbstractCoCO3 with high theoretical capacity has been considered as a candidate anode for the next generation of lithium-ion batteries (LIBs). However, the electrochemical performance of CoCO3 itself, especially the cyclic stability at high current density, hinders its application. Herein, pure phase CoCO3 particles with different particle and pore sizes were prepared by adjusting the solvents (diethylene glycol, ethylene glycol, and deionized water). Among them, CoCO3 synthesized with diethylene glycol (DG-CC) as the solvent shows the best electrochemical performance owing to the smaller particle size and abundant mesoporous structure to maintain robust structural stability. A high specific capacity of 690.7 mAh/g after 1000 cycles was achieved, and an excellent capacity retention was presented. The capacity was contributed by diverse electrochemical reactions and the impedance of DG-CC under different cycles was further compared. Those results provide an important reference for the structural design and stable cycle performance of pure CoCO3.

scholarly journals Solvents Adjusted Pure Phase CoCO3 as Anodes for High Cycle Stability

2020 ◽  
Author(s):  
Liming Liu ◽  
X.X. Huang ◽  
Zengyan Wei ◽  
Xiaoming Duan ◽  
Bo Zhong ◽  
...  
Keyword(s):  
Particle Size ◽  
High Current Density ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Electrochemical Characteristics ◽  
Cycle Stability ◽  
Pure Phase ◽  
Small Primary ◽  
High Theoretical Capacity

Abstract CoCO3 with high theoretical capacity has been considered as a candidate anode for the next generation of lithium-ion batteries. However, the electrochemical characteristics of CoCO3 itself, especially the cycle stability under high current density, hindering its application. Herein, pure phase CoCO3 particles with different particle and pore sizes were prepared by adjusting the solvents. CoCO3 synthesized with diethylene glycol (DG-CC) as the reaction solvent shows the best electrochemical performance for the particle size of about 0.85 µm, which because the small primary particle size within and the mesopores maintain the structural stability. A high specific capacity of after 1000 cycles was achieved, and an excellent capacity retention was presented. The capacity provided by different electrochemical reactions and the impedance of DG-CC under different cycles were further compared. Those results provide an important reference for the structural design and stable cycle performance of pure CoCO3.

scholarly journals The influence of different Si : C ratios on the electrochemical performance of silicon/carbon layered film anodes for lithium-ion batteries

RSC Advances ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 6660-6666 ◽  
Author(s):  
Jun Wang ◽  
Shengli Li ◽  
Yi Zhao ◽  
Juan Shi ◽  
Lili Lv ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Lithium Ions ◽  
High Specific Capacity ◽  
Silicon Carbon ◽  
Silicon Based

With a high specific capacity (4200 mA h g−1), silicon based materials have become the most promising anode materials in lithium-ions batteries.

scholarly journals Improving the properties of Li4Ti5O12 - a promising anode material for lithium-ion batteries

2019 ◽  
Vol 108 ◽  
pp. 01018
Author(s):  
Danuta Olszewska ◽  
Jakub Niewiedział ◽  
Jakub Boczkowski
Keyword(s):  
Crystal Structure ◽  
Phase Composition ◽  
Specific Capacity ◽  
Stoichiometric Composition ◽  
Computer Software ◽  
Lithium Ion ◽  
Lithium Carbonate ◽  
Cycle Performance ◽  
High Specific Capacity ◽  
Voltage Range

Two materials with the stoichiometric composition Li3.85Ni0.15Ti5O12 and Li3.80Cu0.05Ni0.15Ti5O12 were obtained by solid-state reaction using lithium carbonate Li2CO3, titanium oxide TiO2, nickel oxide NiO and copper oxide CuO. The materials were characterized in terms of phase composition, crystal structure as well as cycle performance. Phase composition and crystal structure parameters were determined using X-ray Panalytical Empyrean XRD diffractometer in the range of 10-110° with CuKa radiation. The results were analyzed using Rietveld refinement which was then implemented in the GSAS computer software. The electrochemical properties of the samples were measured by galvanostatic charge/discharge cycles at different rates over a voltage range of 1.0-2.5 V and 0.2-2.5 V. Cyclic voltammetry measurements were also carried out. It was proved that the addition of both Ni and Cu results in high specific capacity of LTO especially at high current rates (2C and 5C). The sample Li3.80Cu0.05Ni0.15Ti5O12 delivers superior capacity above 200 mAh·g -1 when discharged to 0.2 V.

Superior electrochemical performance of Li3VO4/N-doped C as an anode for Li-ion batteries

2015 ◽  
Vol 3 (35) ◽  
pp. 17951-17955 ◽  
Author(s):  
Shibing Ni ◽  
Jicheng Zhang ◽  
Jianjun Ma ◽  
Xuelin Yang ◽  
Lulu Zhang
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Specific Capacity ◽  
Cycle Performance ◽  
Li Ion Batteries ◽  
High Specific Capacity ◽  
Li Ion

A high performance Li3VO4/N-doped C anode was successfully prepared, which shows high specific capacity and excellent cycle performance.

scholarly journals Synthesis and electrochemical performance of NaV3O8 nanobelts for Li/Na-ion batteries and aqueous zinc-ion batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (36) ◽  
pp. 20549-20556 ◽  
Author(s):  
Fang Hu ◽  
Di Xie ◽  
Fuhan Cui ◽  
Dongxu Zhang ◽  
Guihong Song
Keyword(s):  
Electrochemical Performance ◽  
Specific Capacity ◽  
Zinc Ion ◽  
Cycle Performance ◽  
Rate Performance ◽  
High Specific Capacity ◽  
Excellent Electrochemical Performance

Compared to the electrochemical performance for LIBs and NIBs, NaV3O8 nanobelts electrode for ZIBs shows excellent electrochemical performance, including high specific capacity of 421 mA h g−1 at 100 mA g−1, good rate performance and cycle performance.

Mesoporous ZnCo2O4 microspheres as an anode material for high-performance secondary lithium ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19241-19247 ◽  
Author(s):  
Lingyun Guo ◽  
Qiang Ru ◽  
Xiong Song ◽  
Shejun Hu ◽  
Yudi Mo
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Performance ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Specific Capacity ◽  
Excellent Electrochemical Performance

The as-prepared mesoporous ZnCo2O4 microspheres showed a high specific capacity and excellent electrochemical performance when used as an anode material for lithium ion batteries.

High interfacial storage capability of porous NiMn2O4/C hierarchical tremella-like nanostructures as the lithium ion battery anode

Nanoscale ◽  
2015 ◽  
Vol 7 (1) ◽  
pp. 225-231 ◽  
Author(s):  
Wenpei Kang ◽  
Yongbing Tang ◽  
Wenyue Li ◽  
Xia Yang ◽  
Hongtao Xue ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Current Density ◽  
Anode Materials ◽  
High Current Density ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Current ◽  
High Specific Capacity ◽  
Battery Anode

NiMn2O4/C hierarchical tremella-like nanostructures are facilely prepared and show an ultra-high specific capacity even at high current density as anode materials of lithium ion batteries.

scholarly journals Facile Synthesis of FeS@C Particles Toward High-Performance Anodes for Lithium-Ion Batteries

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1467
Author(s):  
Xuanni Lin ◽  
Zhuoyi Yang ◽  
Anru Guo ◽  
Dong Liu
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
High Current Density ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Hierarchical Porous

High energy density batteries with high performance are significantly important for intelligent electrical vehicular systems. Iron sulfurs are recognized as one of the most promising anodes for high energy density lithium-ion batteries because of their high theoretical specific capacity and relatively stable electrochemical performance. However, their large-scale commercialized application for lithium-ion batteries are plagued by high-cost and complicated preparation methods. Here, we report a simple and cost-effective method for the scalable synthesis of nanoconfined FeS in porous carbon (defined as FeS@C) as anodes by direct pyrolysis of an iron(III) p-toluenesulfonate precursor. The carbon architecture embedded with FeS nanoparticles provides a rapid electron transport property, and its hierarchical porous structure effectively enhances the ion transport rate, thereby leading to a good electrochemical performance. The resultant FeS@C anodes exhibit high reversible capacity and long cycle life up to 500 cycles at high current density. This work provides a simple strategy for the mass production of FeS@C particles, which represents a critical step forward toward practical applications of iron sulfurs anodes.

Effect of Carbonaceous Materials on the Electrochemical Performance of Fe2O3/C as an Anode Material for Lithium-Ion Secondary Batteries

2015 ◽  
Vol 778 ◽  
pp. 83-87
Author(s):  
Dan Yang Su ◽  
Jing Wang ◽  
Wen Ping Tong ◽  
Xiao Shi Dong ◽  
Run Kai Zhou ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Specific Capacity ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Research Field ◽  
X Ray Diffraction ◽  
High Specific Capacity ◽  
Dimensional Network ◽  
Oxide Anode

The iron oxide anode materials have attracted widespread attention in lithium-ion battery research field. The Fe2O3/C composite was synthesized via hydrothermal method and characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The XRD confirmed that the main crystallization phases of materials were Fe2O3. The Fe2O3/AC powders showed very uniform cube between 1 and 2 μm. Fe2O3/CNTs composites acted as a three-dimensional network wiring to connect Fe2O3 spheres. The electrochemical investigation indicated that the electrochemical performance of Fe2O3/CNTs materials shows a high specific capacity and an excellent cycling stability. The first reversible capacity of samples is 808.8 mAhg-1 at the current density of 100 mAg-1 between 0.01 and 2.5 V vs. Li/Li+.

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