Micro-Ploughing Process of Copper Current Collector for Lithium-Ion Battery

2011 ◽  
Vol 228-229 ◽  
pp. 309-314
Author(s):  
Xing Xian Tang ◽  
Yong Tang ◽  
Bang Yan Ye ◽  
Long Sheng Lu
Keyword(s):  
Lithium Ion Batteries ◽  
Coulombic Efficiency ◽  
Copper Substrate ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Current Collector ◽  
Cycle Performance ◽  
Active Materials ◽  
Carbon Anodes ◽  
High Coulombic Efficiency

A three-dimensional “fin-groove” composite structure copper current collector was fabricated by micro-ploughing process. 3D and common 2D carbon anodes for lithium- ion batteries were prepared. The electrochemical properties of these electrodes were studied by linear sweep cyclic voltammetry (CV) and charge-discharge (C-D) test. 2D anode showed high contact resistance, high coulombic efficiency but poor cycle performance. In contrast, 3D anode showed the structure superiority in reinforcing bonding force between active materials and copper substrate, improving the conductive environment and alleviating volume changes. It was believed that 3D anode can keep high coulombic efficiency and improve the cycle performance of lithium- ion batteries.

scholarly journals Versatile 3D porous recycled carbon garments with fully-loaded active materials in the current collector for advanced lithium-ion batteries

2019 ◽  
Vol 179 ◽  
pp. 107519 ◽  
Author(s):  
Hyunjin Cho ◽  
Yeonho Kim ◽  
Yong Ju Yun ◽  
Kyu Seung Lee ◽  
Jaeho Shim ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Current Collector ◽  
Active Materials

scholarly journals Surface-engineered mesoporous silicon microparticles as high-Coulombic-efficiency anodes for lithium-ion batteries

Nano Energy ◽  
2019 ◽  
Vol 61 ◽  
pp. 404-410 ◽  
Author(s):  
Jiangyan Wang ◽  
Lei Liao ◽  
Hye Ryoung Lee ◽  
Feifei Shi ◽  
William Huang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Mesoporous Silicon ◽  
High Coulombic Efficiency

Metal–organic framework derived amorphous VOx coated Fe3O4/C hierarchical nanospindle as anode material for superior lithium-ion batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (32) ◽  
pp. 16901-16909
Author(s):  
Bowen Cong ◽  
Yongyuan Hu ◽  
Shanfu Sun ◽  
Yu Wang ◽  
Bo Wang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Coulombic Efficiency ◽  
Metal Organic Framework ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Rate Performance ◽  
Metal Organic ◽  
High Coulombic Efficiency ◽  
Organic Framework

A novel Fe3O4/C@VOx hierarchical nanospindle anode material for LIBs has been successfully designed and fabricated through a MOF-derived route, which delivers high coulombic efficiency, outstanding cycling stability and rate performance.

scholarly journals A novel all-fiber-based LiFePO4/Li4Ti5O12 battery with self-standing nanofiber membrane electrodes

2019 ◽  
Vol 10 ◽  
pp. 2229-2237
Author(s):  
Li-li Chen ◽  
Hua Yang ◽  
Mao-xiang Jing ◽  
Chong Han ◽  
Fei Chen ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Membrane Electrodes ◽  
Fiber Membrane ◽  
Retention Capacity ◽  
3D Network

Electrodes with high conductivity and flexibility are crucial to the development of flexible lithium-ion batteries. In this study, three-dimensional (3D) LiFePO4 and Li4Ti5O12 fiber membrane materials were prepared through electrospinning and directly used as self-standing electrodes for lithium-ion batteries. The structure and morphology of the fibers, and the electrochemical performance of the electrodes and the full battery were characterized. The results show that the LiFePO4 and Li4Ti5O12 fiber membrane electrodes exhibit good rate and cycle performance. In particular, the all-fiber-based gel-state battery composed of LiFePO4 and Li4Ti5O12 fiber membrane electrodes can be charged/discharged for 800 cycles at 1C with a retention capacity of more than 100 mAh·g−1 and a coulombic efficiency close to 100%. The good electrochemical performance is attributed to the high electronic and ionic conductivity provided by the 3D network structure of the self-standing electrodes. This design and preparation method for all-fiber-based lithium-ion batteries provides a novel strategy for the development of high-performance flexible batteries.

Using Orthogonal Ploughing/Extrusion to Fabricate Three-Dimensional On-Chip-Structured Current Collector for Lithium-Ion Batteries

2019 ◽  
Vol 7 (15) ◽  
pp. 12910-12919 ◽  
Author(s):  
Wei Yuan ◽  
Baoyou Pan ◽  
Zhiqiang Qiu ◽  
Ziming Peng ◽  
Yintong Ye ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Current Collector ◽  
On Chip

SnSe/Cu2SnSe3 Heterojunction Structure with High Initial Coulombic Efficiency for Lithium-Ion Battery Anodes

2022 ◽  
Vol 905 ◽  
pp. 135-141
Author(s):  
Bao Juan Yang ◽  
Rui Xia ◽  
Su Bin Jiang ◽  
Mei Zhen Gao
Keyword(s):  
Lithium Ion Batteries ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Diffusion Path ◽  
Thermal Method ◽  
Tin Selenide ◽  
Ion Doping ◽  
Initial Coulombic Efficiency

Due to high theoretical specific capacity and abundant reserves, tin selenide-based materials have received tremendous attentions in the fields of lithium-ion batteries. Nevertheless, the huge volume changes during insertion/de-intercalation processes deteriorate the Coulombic Efficiency greatly. In order to solve it, the researchers have made great efforts by means of controlling nanoparticles granularity, carbon coating, ion doping et al. In this study, SnSe/Cu2SnSe3 heterojunction nanocomposites were synthesized by solvo-thermal method. The resulting SnSe/Cu2SnSe3 is a three-dimensional flower-like hierarchical nanostructure composed of nanoscale thin lamellae of a thickness of 8-12 nm. The unique nanostructure could shorten the diffusion path of lithium ions and expedite charge transfer, and therefore enhance the reaction kinetics. Compared with SnSe, the initial Coulombic efficiency of SnSe/Cu2SnSe3 is raised from 59% to 90% as the anode material of lithium-ion batteries.

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