Si/SiO2 Composite Negative Electrode Material for Lithium Ion Batteries

2014 ◽  
Vol 809-810 ◽  
pp. 781-786
Author(s):  
Min Liu ◽  
Na Zhang ◽  
Feng Hui Zhao ◽  
Xiao Qin Zhao ◽  
Ke Chen ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Specific Capacity ◽  
High Capacity ◽  
Negative Electrode ◽  
Lithium Ion ◽  
High Energy ◽  
X Ray Diffraction ◽  
Ball Milling Technique

As lithium-ion battery anode materials, silicon has the highest specific capacity. In order to restrain pure silicon’s serious volume change and enhance its electrochemical performance, Si/SiO2 composites were prepared by using a convenient high energy ball-milling technique. The characteristics of the composites as anode material for rechargeable lithium-ion batteries were investigated by X-ray diffraction and scanning electron microscopy methods. The electrochemical performance of the anode material was studied, and it was found the composite anode had a high capacity of 1333 mAhg-1 in the first cycle and 400 mAhg-1 could still be obtained after 46 cycles. Such prepared materials displayed improved cycle life.

scholarly journals Improvement of long-term cycling performance of high-nickel cathode materials by ZnO coating

2021 ◽  
Vol 10 (1) ◽  
pp. 210-220
Author(s):  
Fangfang Wang ◽  
Ruoyu Hong ◽  
Xuesong Lu ◽  
Huiyong Liu ◽  
Yuan Zhu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Solid Phase ◽  
Low Cost ◽  
Specific Capacity ◽  
High Capacity ◽  
Lithium Ion ◽  
Side Reaction ◽  
Chemical Route ◽  
High Nickel

Abstract The high-nickel cathode material of LiNi0.8Co0.15Al0.05O2 (LNCA) has a prospective application for lithium-ion batteries due to the high capacity and low cost. However, the side reaction between the electrolyte and the electrode seriously affects the cycling stability of lithium-ion batteries. In this work, Ni2+ preoxidation and the optimization of calcination temperature were carried out to reduce the cation mixing of LNCA, and solid-phase Al-doping improved the uniformity of element distribution and the orderliness of the layered structure. In addition, the surface of LNCA was homogeneously modified with ZnO coating by a facile wet-chemical route. Compared to the pristine LNCA, the optimized ZnO-coated LNCA showed excellent electrochemical performance with the first discharge-specific capacity of 187.5 mA h g−1, and the capacity retention of 91.3% at 0.2C after 100 cycles. The experiment demonstrated that the improved electrochemical performance of ZnO-coated LNCA is assigned to the surface coating of ZnO which protects LNCA from being corroded by the electrolyte during cycling.

Bismuth oxyiodide nanosheets: a novel high-energy anode material for lithium-ion batteries

2015 ◽  
Vol 51 (14) ◽  
pp. 2798-2801 ◽  
Author(s):  
Chaoji Chen ◽  
Pei Hu ◽  
Xianluo Hu ◽  
Yueni Mei ◽  
Yunhui Huang
Keyword(s):  
Thermal Treatment ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Bioi Nanosheets

Direct thermal treatment of commercial BiI3 powder leads to BiOI nanosheets as a high-capacity anode for lithium-ion batteries.

scholarly journals Enhanced Roles of Carbon Architectures in High-Performance Lithium-Ion Batteries

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Lu Wang ◽  
Junwei Han ◽  
Debin Kong ◽  
Ying Tao ◽  
Quan-Hong Yang
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
High Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
High Mass

Abstract Lithium-ion batteries (LIBs), which are high-energy-density and low-safety-risk secondary batteries, are underpinned to the rise in electrochemical energy storage devices that satisfy the urgent demands of the global energy storage market. With the aim of achieving high energy density and fast-charging performance, the exploitation of simple and low-cost approaches for the production of high capacity, high density, high mass loading, and kinetically ion-accessible electrodes that maximize charge storage and transport in LIBs, is a critical need. Toward the construction of high-performance electrodes, carbons are promisingly used in the enhanced roles of active materials, electrochemical reaction frameworks for high-capacity noncarbons, and lightweight current collectors. Here, we review recent advances in the carbon engineering of electrodes for excellent electrochemical performance and structural stability, which is enabled by assembled carbon architectures that guarantee sufficient charge delivery and volume fluctuation buffering inside the electrode during cycling. Some specific feasible assembly methods, synergism between structural design components of carbon assemblies, and electrochemical performance enhancement are highlighted. The precise design of carbon cages by the assembly of graphene units is potentially useful for the controlled preparation of high-capacity carbon-caged noncarbon anodes with volumetric capacities over 2100 mAh cm−3. Finally, insights are given on the prospects and challenges for designing carbon architectures for practical LIBs that simultaneously provide high energy densities (both gravimetric and volumetric) and high rate 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.

A nickel and cobalt bimetal organic framework with high capacity as an anode material for lithium-ion batteries

2020 ◽  
Vol 4 (11) ◽  
pp. 5757-5764
Author(s):  
Wen Zheng ◽  
Wanying Bi ◽  
Xuenong Gao ◽  
Zhengguo Zhang ◽  
Wenhui Yuan ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Capacity ◽  
Lithium Ion ◽  
Excellent Electrochemical Performance ◽  
Organic Framework

The Ni–Co-BTC anode shows excellent electrochemical performance, which could be ascribed to the intercalation/deintercalation mechanism and the synergistic effect of two cations.

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.

Foamed silicon particles as a high capacity anode material for lithium-ion batteries

2017 ◽  
Vol 53 (87) ◽  
pp. 11897-11900 ◽  
Author(s):  
Myungbeom Sohn ◽  
Hyeong-Il Park ◽  
Hansu Kim
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Capacity ◽  
Lithium Ion ◽  
Etching Process ◽  
Alkaline Etching ◽  
Excellent Electrochemical Performance ◽  
Silicon Particles

The foamed Si particles prepared by a milling-assisted alkaline etching process showed excellent electrochemical performance as an anode for lithium-ion batteries.

scholarly journals Synthesis and Electrochemical Performance of Mesoporous MnC2O4 Nanorod/rGO Composite Anode for Lithium-ion Batteries

2021 ◽  
Author(s):  
Ya-Nan Zhang ◽  
Li-Ying Xue ◽  
Yong Zhang ◽  
Jing Su ◽  
Yun-Fei Long Long ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Low Cost ◽  
High Capacity ◽  
Reduction Process ◽  
Lithium Ion ◽  
High Energy ◽  
Volume Effect ◽  
Discharge Process

Abstract MnC2O4 is a promising anode material for high-energy lithium-ion batteries due to its low cost and high capacity. However, its application is limited by the poor cyclic-stability and rate performance caused by its low conductivity. Herein, mesoporous MnC2O4 nanorod/rGO composite is prepared via precipitation followed by a reflux reduction process, where MnC2O4 nanorods are attached to the surface of graphene through electrostatic adsorption. This composite delivers a discharge capacity of 1082, 964, and 808 mAh·g-1 after 200 cycles at 3, 5, and 8 C, respectively. The good electrochemical performance can be attributed to the synergistic effect between mesoporous nanorods and rGO. This synergistic effect not only offers high conductivity, nanoparticles, and abundant mesopores to accelerate electrode kinetics but also provides a more stable structure to reduce the volume effect during the charge/discharge process. Therefore, mesoporous MnC2O4 nanorod/rGO composite can find a potential application in high-energy lithium-ion batteries.

Graphene Oxide-Induced Carbon Nanoporous Framework towards Advanced Composite Anode Material for Lithium-Ion Batteries

2021 ◽  
pp. 1-17
Author(s):  
Guangfeng Shi ◽  
Jiale Zhou ◽  
Rong Zeng ◽  
Bing Na ◽  
Shufen Zou
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Anode Materials ◽  
Specific Capacity ◽  
High Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Composite Anode ◽  
Advanced Composite

Abstract Porous structures in anode materials are of importance to accommodate volume dilation of active matters. In the present case, a carbon nanoporous framework is hydrothermally synthesized from glucose in the presence of graphene oxide (GO), together with in situ active Fe3O4 nanoparticles within it. The composite anode material has outstanding electrochemical performance, including high specific capacity, excellent cyclic stability and superior rate capability. The specific capacity stays at 830.8 mAhg−1 after 200 cycles at 1 A/g, equivalent to a high capacity retention of 88.7%. The findings provide valuable clues to tailor morphology of hydrothermally carbonized glucose for advanced composite anode materials of lithium-ion batteries.

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