scholarly journals Electrodeposited Cu2Sb as anode material for 3-dimensional Li-ion microbatteries

2010 ◽  
Vol 25 (8) ◽  
pp. 1485-1491 ◽  
Author(s):  
Emilie Perre ◽  
Pierre Louis Taberna ◽  
Driss Mazouzi ◽  
Philippe Poizot ◽  
Torbjörn Gustafsson ◽  
...  
Keyword(s):  
Power Systems ◽  
Electric Vehicle ◽  
Hybrid Electric Vehicle ◽  
Three Dimensional ◽  
Current Collector ◽  
High Energy ◽  
Mobile Technologies ◽  
3 Dimensional ◽  
Increasing Demand ◽  
Footprint Area

An increasing demand on high energy and power systems has arisen not only with the development of electric vehicle (EV), hybrid electric vehicle (HEV), telecom, and mobile technologies, but also for specific applications such as powering of microelectronic systems. To power those microdevices, an extra variable is added to the equation: a limited footprint area. Three-dimensional (3D) microbatteries are a solution to combine high-density energy and power. In this work, we present the formation of Cu2Sb onto three-dimensionally architectured arrays of Cu current collectors. Sb electrodeposition conditions and annealing post treatment are discussed in light of their influence on the morphology and battery performances. An increase of cycling stability was observed when Sb was fully alloyed with the Cu current collector. A subsequent separator layer was added to the 3D electrode when optimized. Equivalent capacity values are measured for at least 20 cycles. Work is currently devoted to the identification of the causes of capacity fading.

scholarly journals Supercooled liquid sulfur maintained in three-dimensional current collector for high-performance Li-S batteries

2020 ◽  
Vol 6 (21) ◽  
pp. eaay5098 ◽  
Author(s):  
Guangmin Zhou ◽  
Ankun Yang ◽  
Guoping Gao ◽  
Xiaoyun Yu ◽  
Jinwei Xu ◽  
...  
Keyword(s):  
High Performance ◽  
Critical Role ◽  
Three Dimensional ◽  
Current Collector ◽  
Reversible Capacity ◽  
Supercooled Liquid ◽  
High Energy ◽  
Liquid Sulfur ◽  
Sulfur Species ◽  
Solid Liquid

In lithium-sulfur (Li-S) chemistry, the electrically/ionically insulating nature of sulfur and Li2S leads to sluggish electron/ion transfer kinetics for sulfur species conversion. Sulfur and Li2S are recognized as solid at room temperature, and solid-liquid phase transitions are the limiting steps in Li-S batteries. Here, we visualize the distinct sulfur growth behaviors on Al, carbon, Ni current collectors and demonstrate that (i) liquid sulfur generated on Ni provides higher reversible capacity, faster kinetics, and better cycling life compared to solid sulfur; and (ii) Ni facilitates the phase transition (e.g., Li2S decomposition). Accordingly, light-weight, 3D Ni-based current collector is designed to control the deposition and catalytic conversion of sulfur species toward high-performance Li-S batteries. This work provides insights on the critical role of the current collector in determining the physical state of sulfur and elucidates the correlation between sulfur state and battery performance, which will advance electrode designs in high-energy Li-S batteries.

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.

scholarly journals 3D Self-Supported Nanoarchitectured Arrays Electrodes for Lithium-Ion Batteries

2012 ◽  
Vol 2012 ◽  
pp. 1-19 ◽  
Author(s):  
Xin Chen ◽  
Ying Du ◽  
Nai Qing Zhang ◽  
Ke Ning Sun
Keyword(s):  
Lithium Ion Batteries ◽  
Large Scale ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Current Collector ◽  
High Energy ◽  
Kinetic Properties ◽  
Future Design ◽  
Conductive Substrates ◽  
Consumer Devices

Three-dimensional self-supported nanoarchitectured arrays electrodes (3DSNAEs) consisting of a direct growth of nanoarchitectured arrays on the conductive current collector, including homogeneous and heterogeneous nanoarchitectured arrays structures, have been currently studied as the most promising electrodes owing to their synergies resulting from the multistructure hybrid and integrating heterocomponents to address the requirements (high energy and power density) of superperformance lithium ion batteries (LIBs) applied in portable electronic consumer devices, electric vehicles, large-scale electricity storage, and so on. In the paper, recent advances in the strategies for the fabrication, selection of the different current collector substrates, and structural configuration of 3DSNAEs with different cathode and anode materials are investigated in detail. The intrinsic relationship of the unique structural characters, the conductive substrates, and electrochemical kinetic properties of 3DSNAEs is minutely analyzed. Finally, the future design trends and directions of 3DSNAEs are highlighted, which may open a new avenue of developing ideal multifunctional 3DSNAEs for further advanced LIBs.

Natural Template-Derived 3D Porous Current Collector for Dendrite-free Lithium Metal Battery

NANO ◽  
2020 ◽  
Vol 15 (03) ◽  
pp. 2050033
Author(s):  
Wenyang Zhang ◽  
Jialin Li ◽  
Haixia Chen ◽  
Huixin Jin ◽  
Pan Li ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Three Dimensional ◽  
Current Collector ◽  
High Energy ◽  
Dendrite Growth ◽  
Electrochemical Performances ◽  
Lithium Metal ◽  
Energy Storage Devices ◽  
Molding Process ◽  
Current Collectors

Metallic lithium (Li) is an outstanding anode for high-energy storage devices, but dendrite growth impedes its practical application. Herein, similar to molding process of mooncake, a facile strategy of templated etching has been developed to manufacture three dimensional (3D) current collectors with hierarchical pore structures and biomimetic surfaces derived from natural templates. By using polydimethylsiloxane (PDMS) as duplicate templates, 3D surface morphologies of natural surfaces can be printed on Cu foil, and the resuable templates facilitate mass production. By comparison, the 3D porous current collectors largely improve Li deposition behavior and suppress dendrite growth. They exhibit excellent electrochemical performances: high Coulombic efficiency (CE), long life spans of more than 1000[Formula: see text]h and good cycling performance. The templated etching method overcomes the energy/time-consuming disadvantages of past pore-creating methods and will boost the commercialization of lithium metal batteries.

Parameter Matching and Optimization of a Series Hybrid Electric Vehicle Powertrain System

2016 ◽  
Author(s):  
Swagata Borthakur ◽  
Shankar C. Subramanian
Keyword(s):  
Electric Vehicle ◽  
Hybrid Electric Vehicle ◽  
Oil Reserves ◽  
Component Sizing ◽  
Powertrain System ◽  
Series Hybrid Electric Vehicle ◽  
Parameter Matching ◽  
Hybrid Electric ◽  
Increasing Demand ◽  
Hybrid Configuration

The gradual decline of oil reserves and the increasing demand for energy have resulted in automotive manufacturers developing new environmentally friendly vehicles such as electric and hybrid vehicles. Selection of the correct hybrid configuration for a given driving condition is very important since it affects the performance of the vehicle and its fuel economy. This paper focuses on a detailed parametric analysis of a Series Hybrid Electric vehicle (SHEV). The objective of this paper was to develop a SHEV powertrain by initial parameter matching and component sizing, followed by its optimization for given design constraints. This involved study and calculation of components power specifications based on vehicle dynamics. Initial parameterization was followed by optimization to meet the design objective. The simulation of the optimized SHEV was done in the software ADVISOR for an Indian driving cycle (IDC). Based on the simulation results, an optimum range of the powertrain components was established.

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