N-Doped carbon nanotubes decorated with Fe/Ni sites to stabilize lithium metal anodes

2020 ◽  
Vol 7 (15) ◽  
pp. 2747-2752
Author(s):  
Guannan Xiao ◽  
Wenlong Cai ◽  
Linqin Zhu ◽  
Yuting Fang ◽  
Huaisheng Ao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Cycle Life ◽  
Lithium Metal ◽  
Lithium Metal Anodes ◽  
Metal Anodes

Use of N-doped carbon nanotubes decorated with Fe/Ni sites can significantly enhance the cycle life of a symmetric cell to up to 1200 h as well as yield a lowered hysteresis.

scholarly journals Quantification of the ion transport mechanism in protective polymer coatings on lithium metal anodes

2021 ◽  
Author(s):  
Hongyao Zhou ◽  
Haodong Liu ◽  
Xing Xing ◽  
Zijun Wang ◽  
Sicen Yu ◽  
...  
Keyword(s):  
Ion Transport ◽  
Transport Mechanism ◽  
Polymer Coatings ◽  
Rechargeable Batteries ◽  
Cycle Life ◽  
Lithium Metal ◽  
Lithium Metal Anodes ◽  
Protective Polymer ◽  
Deposition Morphology ◽  
Metal Anodes

Protective Polymer Coatings (PPCs) protect lithium metal anodes in rechargeable batteries to stabilize the Li/electrolyte interface and to extend the cycle life by reducing parasitic reactions and improving the lithium deposition morphology.

Excellent Cycle Life of Lithium-Metal Anodes in Lithium-Ion Batteries with Mussel-Inspired Polydopamine-Coated Separators

2012 ◽  
Vol 2 (6) ◽  
pp. 645-650 ◽  
Author(s):  
Myung-Hyun Ryou ◽  
Dong Jin Lee ◽  
Je-Nam Lee ◽  
Yong Min Lee ◽  
Jung-Ki Park ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Cycle Life ◽  
Lithium Metal ◽  
Lithium Metal Anodes ◽  
Metal Anodes

scholarly journals Influence of Temperature and Electrolyte Composition on the Performance of Lithium Metal Anodes

Batteries ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 67
Author(s):  
Sanaz Momeni Boroujeni ◽  
Alexander Fill ◽  
Alexander Ridder ◽  
Kai Peter Birke
Keyword(s):  
Electrochemical Impedance ◽  
Coulombic Efficiency ◽  
Electrolyte Composition ◽  
Temperature Cycling ◽  
Cycle Life ◽  
Lithium Metal ◽  
High Concentration ◽  
Medium Temperature ◽  
Lithium Metal Anodes ◽  
Metal Anodes

Lithium metal anodes have again attracted widespread attention due to the continuously growing demand of cells with higher energy density. However, the lithium deposition mechanism and the affecting process of influencing factors, such as temperature, cycling current density, and electrolyte composition are not fully understood and require further investigation. In this article, the behavior of lithium metal anode at different temperatures (25, 40, and 60 ∘C), lithium salts, electrolyte concentrations (1 and 2 M), and the applied cell current (equivalent to 0.5 C, 1 C, and 2 C). is investigated. Two different salts were evaluated: lithium bis(fluorosulfonyl)imide (LiFSI) and lithium bis(trifluoromethanesul-fonyl)imide (LiTFSI). The cells at a medium temperature (40 ∘C) show the highest Coulombic efficiency (CE). However, shorter cycle life is observed compared to the experiments at room temperature (25 ∘C). Regardless of electrolyte type and C-rate, the higher temperature of 60 ∘C provides the worst Coulombic efficiency and cycle life among those at the examined temperatures. A higher C-rate has a positive effect on the stability over the cycle life of the lithium cells. The best performance in terms of long cycle life and relatively good Coulombic efficiency is achieved by fast charging the cell with high concentration LiFSI in 1,2-dimethoxyethane (DME) electrolyte at a temperature of 25 ∘C. The cell has an average Coulombic efficiency of 0.987 over 223 cycles. In addition to galvanostatic experiments, Electrochemical Impedance Spectroscopy (EIS) measurements were performed to study the evolution of the interface under different conditions during cycling.

Glycolide additives enrich organic components in the solid electrolyte interphase enabling stable ultrathin lithium metal anodes

2021 ◽  
Author(s):  
Xin-Meng Wang ◽  
Xue-Qiang Zhang ◽  
Peng Shi ◽  
Li-Peng Hou ◽  
Ming-Yue Zhou ◽  
...  
Keyword(s):  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
Cycle Life ◽  
Lithium Metal ◽  
Electrolyte Additive ◽  
Organic Components ◽  
Lithium Metal Anodes ◽  
Metal Anodes

Glycolide (GL) is proposed as an electrolyte additive to prolong the cycle life of ultrathin Li metal anodes through the enrichment of the organic components in the working solid electrolyte interphase.

Rejuvenating dead lithium supply in lithium metal anodes by iodine redox

Nature Energy ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 378-387 ◽  
Author(s):  
Chengbin Jin ◽  
Tiefeng Liu ◽  
Ouwei Sheng ◽  
Matthew Li ◽  
Tongchao Liu ◽  
...  
Keyword(s):  
Lithium Metal ◽  
Lithium Metal Anodes ◽  
Metal Anodes

Flame-retardant single-ion conducting polymer electrolytes based on anion acceptors for high-safety lithium metal batteries

2021 ◽  
Author(s):  
Kuirong Deng ◽  
Tianyu Guan ◽  
Fuhui Liang ◽  
Xiaoqiong Zheng ◽  
Qingguang Zeng ◽  
...  
Keyword(s):  
Solid State ◽  
Flame Retardant ◽  
Conducting Polymer ◽  
Polymer Electrolytes ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Lithium Metal Anodes ◽  
Ion Conducting ◽  
Ion Conducting Polymer ◽  
Metal Anodes

Solid-state lithium metal batteries (LMBs) assembled with polymer electrolytes (PEs) and lithium metal anodes are promising batteries owing to their enhanced safeties and ultrahigh theoretical energy densities. Nevertheless, polymer electrolytes...

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