scholarly journals A Commercial Carbonaceous Anode with a-Si Layers by Plasma Enhanced Chemical Vapor Deposition for Lithium Ion Batteries

2020 ◽  
Vol 4 (2) ◽  
pp. 72
Author(s):  
Chao-Yu Lee ◽  
Fa-Hsing Yeh ◽  
Ing-Song Yu
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Coulombic Efficiency ◽  
Low Cost ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Chemical Vapor ◽  
Li Ion Battery ◽  
Li Ion

In this study, we propose a mass production-able and low-cost method to fabricate the anodes of Li-ion battery. Carbonaceous anodes, integrated with thin amorphous silicon layers by plasma enhanced chemical vapor deposition, can improve the performance of specific capacity and coulombic efficiency for Li-ion battery. Three different thicknesses of a-Si layers (320, 640, and 960 nm), less than 0.1 wt% of anode electrode, were deposited on carbonaceous electrodes at low temperature 200 °C. Around 30 mg of a-Si by plasma enhanced chemical vapor deposition (PECVD) can improve the specific capacity ~42%, and keep coulombic efficiency of the half Li-ion cells higher than 85% after first cycle charge-discharge test. For the thirty cyclic performance and rate capability, capacitance retention can maintain above 96%. The thicker a-Si layers on carbon anodes, the better electrochemical performance of anodes with silicon-carbon composites we get. The traditional carbonaceous electrodes can be deposited a-Si layers easily by plasma enhanced chemical vapor deposition, which is a method with high potential for industrialization.

scholarly journals Aerosol Multicoated Graphene Nanoplatelets/Nano Si Composite as Anodes in Li-Ion Batteries

2020 ◽  
Author(s):  
Pin-Yi Zhao ◽  
Antonio Ruiz Gonzalez ◽  
Yohan Dallagnese ◽  
Kwang Choy
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Atmospheric Pressure ◽  
Specific Capacity ◽  
Composite Layer ◽  
Rate Capability ◽  
Chemical Vapor ◽  
Graphene Nanoplatelets ◽  
Li Ion Batteries ◽  
Li Ion

Silicon has been investigated as promising anode materials in lithium-ion batteries due to its high theoretical specific capacity. Nonetheless, high-capacity Si nanoparticles succumb to limited electrical conductivity, drastic volume change, and harsh aggregation upon cycling. In this paper, a unique multicoated composite is fabricated through innovative, simple, atmospheric pressure, and cost-effective atmospheric pressure aerosol-assisted vapor deposition (APAAVD). The fabrication method is reported for the first time with a well-distributed graphene nanoplatelets/nano-silicon composite layer through the processing with an organic solvent. The plane of the layers facilitates high rate capability, whereas the voids between the layers buffer volume expansion of silicon for good cycling performance. The multicoated composite anode (10 wt.% Si) presents a specific capacity of ~500 mAh g-1 at 0.17 A/g and capacity retention of 85.8 % after 500 discharge/charge cycles. The facile method preserves the combined advantages of atmospheric pressure chemical vapor deposition and aerosol-assisted chemical vapor deposition, offering an encouraging research arena for initial laboratory tests in rechargeable Li-ion batteries. Besides, two approaches for the presentation of cyclic discharge/charge patterns are proposed with generalized algorithms through linear algebra.

scholarly journals Chemical vapor deposition-assisted fabrication of a graphene-wrapped MnO/carbon nanofibers membrane as a high-rate and long-life anode for lithium ion batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (80) ◽  
pp. 50973-50980 ◽  
Author(s):  
Juan Wang ◽  
Chao Li ◽  
Zhenyu Yang ◽  
Deliang Chen
Keyword(s):  
Vapor Deposition ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Chemical Vapor ◽  
High Energy ◽  
High Rate ◽  
Li Ion Battery ◽  
High Specific Capacity ◽  
Li Ion ◽  
Cycling Life

Novel MnO/CNFs@G membrane by electrospinning and APCVD; this anode with high specific capacity and longest cycling life is of great interest to high energy thin film or flexible Li-ion battery.

scholarly journals Aerosol Multicoated Graphene Nanoplatelets/Nano Si Composite as Anodes in Li-Ion Batteries

2020 ◽  
Author(s):  
Pin-Yi Zhao ◽  
Antonio Ruiz Gonzalez ◽  
Yohan Dallagnese ◽  
Kwang Choy
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Atmospheric Pressure ◽  
Specific Capacity ◽  
Composite Layer ◽  
Rate Capability ◽  
Chemical Vapor ◽  
Graphene Nanoplatelets ◽  
Li Ion Batteries ◽  
Li Ion

Silicon has been investigated as promising anode materials in lithium-ion batteries due to its high theoretical specific capacity. Nonetheless, high-capacity Si nanoparticles succumb to limited electrical conductivity, drastic volume change, and harsh aggregation upon cycling. In this paper, a unique multicoated composite is fabricated through innovative, simple, atmospheric pressure, and cost-effective atmospheric pressure aerosol-assisted vapor deposition (APAAVD). The fabrication method is reported for the first time with a well-distributed graphene nanoplatelets/nano-silicon composite layer through the processing with an organic solvent. The plane of the layers facilitates high rate capability, whereas the voids between the layers buffer volume expansion of silicon for good cycling performance. The multicoated composite anode (10 wt.% Si) presents a specific capacity of ~500 mAh g-1 at 0.17 A/g and capacity retention of 85.8 % after 500 discharge/charge cycles. The facile method preserves the combined advantages of atmospheric pressure chemical vapor deposition and aerosol-assisted chemical vapor deposition, offering an encouraging research arena for initial laboratory tests in rechargeable Li-ion batteries. Besides, two approaches for the presentation of cyclic discharge/charge patterns are proposed with generalized algorithms through linear algebra.

scholarly journals B-Doped Si@C Nanorod Anodes for High-Performance Lithium-Ion Batteries

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Shibin Liu ◽  
Jianwei Xu ◽  
Hongyu Zhou ◽  
Jing Wang ◽  
Xiangcai Meng
Keyword(s):  
High Performance ◽  
Coulombic Efficiency ◽  
Low Cost ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
High Specific Capacity ◽  
Production Strategy ◽  
Li Ion ◽  
B Doping

B doping plays an important role in improving the conductivity and electrochemical properties of Si anodes for Li-ion batteries. Herein, we developed a facile and massive production strategy to fabricate C-coated B-doped Si (B-Si@C) nanorod anodes using casting intermediate alloys of Al-Si and Al-B and dealloying followed by C coating. The B-Si@C nanorod anodes demonstrate a high specific capacity of 560 mAg-1, with a high initial coulombic efficiency of 90.6% and substantial cycling stability. Notably, the melting cast approach is facile, simple, and applicable to doping treatments, opening new possibilities for the development of low-cost, environmentally benign, and high-performance Li-ion batteries.

scholarly journals Progress in Preparation and Modification of LiNi0.6Mn0.2Co0.2O2 Cathode Material for High Energy Density Li-Ion Batteries

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Lipeng Xu ◽  
Fei Zhou ◽  
Bing Liu ◽  
Haobing Zhou ◽  
Qichang Zhang ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Low Cost ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Synthesis Methods ◽  
High Specific Capacity ◽  
Li Ion

Due to the advantages of high specific capacity, various temperatures, and low cost, layered LiNi0.6Co0.2Mn0.2O2 has become one of the potential cathode materials for lithium-ion battery. However, its application was limited by the high cation mixing degree and poor electric conductivity. In this paper, the influences of synthesis methods and modification such surface coating and doping materials on the electrochemical properties such as capacity, cycle stability, rate capability, and impedance of LiNi0.6Co0.2Mn0.2O2 cathode materials are reviewed and discussed. The confronting issues of LiNi0.6Co0.2Mn0.2O2 cathode materials have been pointed out, and the future development of its application is also prospected.

Hierarchically porous nitrogen-rich carbon derived from wheat straw as an ultra-high-rate anode for lithium ion batteries

2014 ◽  
Vol 2 (25) ◽  
pp. 9684-9690 ◽  
Author(s):  
Li Chen ◽  
Yongzhi Zhang ◽  
Chaohong Lin ◽  
Wen Yang ◽  
Yan Meng ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Wheat Straw ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Li Ion Battery ◽  
Hierarchically Porous ◽  
Li Ion ◽  
Battery Anode

Hierarchically porous nitrogen-rich carbon derived from wheat straw presents an impressive specific capacity and ultrahigh rate capability as a Li-ion battery anode.

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