Preparation of three‐dimensional copper‐zinc alloy current collector by powder metallurgy for lithium metal battery anode

2021 ◽  
Author(s):  
Zhe Qiang ◽  
Bao Liu ◽  
Bingjun Yang ◽  
Pengjun Ma ◽  
Xingbin Yan ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Three Dimensional ◽  
Current Collector ◽  
Zinc Alloy ◽  
Lithium Metal ◽  
Copper Zinc ◽  
Lithium Metal Battery ◽  
Battery Anode

Epitaxial Induced Plating Current‐Collector Lasting Lifespan of Anode‐Free Lithium Metal Battery

2021 ◽  
pp. 2003709
Author(s):  
Liangdong Lin ◽  
Liumin Suo ◽  
Yong‐sheng Hu ◽  
Hong Li ◽  
Xuejie Huang ◽  
...  
Keyword(s):  
Current Collector ◽  
Lithium Metal ◽  
Lithium Metal Battery

scholarly journals The Influence of Micro-Structured Anode Current Collectors in Combination with Highly Concentrated Electrolyte on the Coulombic Efficiency of In-Situ Deposited Li-Metal Electrodes with Different Counter Electrodes

Batteries ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 20 ◽  
Author(s):  
Fabian Heim ◽  
Tina Kreher ◽  
Kai Peter Birke
Keyword(s):  
Coulombic Efficiency ◽  
Chemical Separation ◽  
Current Collector ◽  
Cycle Performance ◽  
Zinc Alloy ◽  
Counter Electrodes ◽  
Current Collectors ◽  
Copper Zinc ◽  
Two Measures

This paper compares and combines two common methods to improve the cycle performance of lithium metal (Li) electrodes. One technique is to establish a micro-structured current collector by chemical separation of a copper/zinc alloy. Furthermore, the use of a highly concentrated ether-based electrolyte is applied as a second approach for improving the cycling behavior. The influence of the two measures compared with a planar current collector and a 1 M concentrated carbonate-based electrolyte, as well as the combination of the methods, are investigated in test cells both with Li and lithium nickel cobalt manganese oxide (NCM) as counter electrodes. In all cases Li is in-situ plated onto the micro-structured current collectors respectively a planar copper foil without presence of any excess Li before first deposition. In experiments with Li counter electrodes, the effect of a structured current collector is not visible whereas the influence of the electrolyte can be observed. With NCM counter electrodes and carbonate-based electrolyte structured current collectors can improve Coulombic efficiency. The confirmation of this outcome in experiments with highly concentrated ether-based electrolyte is challenging due to high deviations. However, these results indicate, that improvements in Coulombic efficiency achieved by structuring the current collector’s surface and using ether-based electrolyte do not necessarily add up, if both methods are combined in one cell.

scholarly journals Dendrite-Free Lithium Electrodeposition Enabled by 3D Porous Lithiophilic Host toward Stable Lithium Metal Anodes

2021 ◽  
Author(s):  
Linghong Xu ◽  
Zhihao Yu ◽  
Junrong Zheng
Keyword(s):  
Coulombic Efficiency ◽  
Short Circuit ◽  
3D Structure ◽  
Three Dimensional ◽  
Current Collector ◽  
High Energy ◽  
Lithium Metal ◽  
Lithium Storage ◽  
Practical Utilization ◽  
Lithium Dendrite

Abstract Lithium metal is a promising anode utilized in cutting-edge high-energy batteries owing to the low density, low electrochemical potential, and super high theoretical capacity. Unfortunately, continuous uncontrollable lithium dendrite growth and ‘dead’ lithium result in capacity decay, low coulombic efficiency, and short circuit, severely hindering the practical utilization of lithium anode. Herein, we propose a three-dimensional porous lithiophilic current collector for lithium storage. The conductive 3D structure constructed by carbon fiber (CF) can well accommodate the deposited lithium, eliminating volume change between the lithium depositing/stripping process. Moreover, the polydopamine (PDA) coating on the CF surface possesses a large number of polar groups, which can homogenize Li+ ions distribution and apply as the sites for lithium deposition, decreasing nucleation overpotential. As a result, under the 1 mA cm−2 current density, the PDA coated CF (PDA@CF) electrode exhibits high CE (∼98%) for 1000 cycles. Galvanostatic measurements demonstrate that the Li anode using PDA@CF achieves 1000 h cycling life under 1 mA cm−2 with a low overpotential (<15 mV). The LiFePO4 full cell shows enhanced rate performance and stable long-term cycling.

A self-supported, three-dimensional porous copper film as a current collector for advanced lithium metal batteries

2019 ◽  
Vol 7 (3) ◽  
pp. 1092-1098 ◽  
Author(s):  
Yujun Shi ◽  
Zhenbin Wang ◽  
Hui Gao ◽  
Jiazheng Niu ◽  
Wensheng Ma ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Three Dimensional ◽  
Copper Film ◽  
Current Collector ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Porous Copper ◽  
Excellent Electrochemical Performance ◽  
Cu Foil ◽  
A Current

3D porous Cu foil fabricated by the painting–alloying–dealloying method exhibits excellent electrochemical performance as a current collector for Li metal batteries.

Diffusion couples Cu-X (X=Sn, Zn, Al) derived 3D porous current collector for dendrite-free lithium metal battery

2019 ◽  
Vol 440 ◽  
pp. 227142 ◽  
Author(s):  
Wenyang Zhang ◽  
Huixin Jin ◽  
Cheng Xu ◽  
Shimeng Zhao ◽  
Yiqun Du ◽  
...  
Keyword(s):  
Current Collector ◽  
Diffusion Couples ◽  
Lithium Metal ◽  
Lithium Metal Battery

Highly stable lithium metal battery with an applied three-dimensional mesh structure interlayer

2018 ◽  
Vol 6 (32) ◽  
pp. 15540-15545 ◽  
Author(s):  
Hyunjin Kim ◽  
Yong Jun Gong ◽  
Jeeyoung Yoo ◽  
Youn Sang Kim
Keyword(s):  
Stainless Steel ◽  
Three Dimensional ◽  
Cost Effective ◽  
Effective Strategy ◽  
Lithium Metal ◽  
Stainless Steel Mesh ◽  
Mesh Structure ◽  
Cost Effective Strategy ◽  
Steel Mesh ◽  
Lithium Metal Battery

We propose a facile and cost-effective strategy for stabilizing the lithium metal–electrolyte interface via a three-dimensional stainless steel mesh (SSM) interlayer.

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