Silicon Nanowire Degradation and Stabilization during Lithium Cycling by SEI Layer Formation

Nano Letters ◽  
2014 ◽  
Vol 14 (6) ◽  
pp. 3088-3095 ◽  
Author(s):  
Jeong-Hyun Cho ◽  
S. Tom Picraux
Keyword(s):  
Silicon Nanowire ◽  
Layer Formation ◽  
Sei Layer

scholarly journals Investigation on the formation of Mg metal anode/electrolyte interfaces in Mg/S batteries with electrolyte additives

2020 ◽  
Vol 8 (43) ◽  
pp. 22998-23010
Author(s):  
Vinayan Bhaghavathi Parambath ◽  
Zhirong Zhao-Karger ◽  
Thomas Diemant ◽  
Markus Jäckle ◽  
Zhenyou Li ◽  
...  
Keyword(s):  
Layer Formation ◽  
Electrolyte Additives ◽  
Metal Anode ◽  
Sei Layer ◽  
Metal Anodes

Optimization of SEI layer formation on Mg metal anodes of Mg/S batteries using iodine additive containing Mg[B(hfip)4]2/DME electrolyte.

Ultrathin Silicon Nanowires Produced by a Bi-Metal-Assisted Chemical Etching Method for Highly Stable Lithium-Ion Battery Anodes

NANO ◽  
2020 ◽  
Vol 15 (06) ◽  
pp. 2050076
Author(s):  
Fang Sun ◽  
Zhiyuan Tan ◽  
Zhengguang Hu ◽  
Jun Chen ◽  
Jie Luo ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Silicon Nanowires ◽  
Chemical Etching ◽  
Silicon Nanowire ◽  
High Capacity ◽  
Lithium Ion ◽  
Average Diameter ◽  
Sei Layer ◽  
Metal Assisted Chemical Etching

Silicon is widely studied as a high-capacity lithium-ion battery anode. However, the pulverization of silicon caused by a large volume expansion during lithiation impedes it from being used as a next generation anode for lithium-ion batteries. To overcome this drawback, we synthesized ultrathin silicon nanowires. These nanowires are 1D silicon nanostructures fabricated by a new bi-metal-assisted chemical etching process. We compared the lithium-ion battery properties of silicon nanowires with different average diameters of 100[Formula: see text]nm, 30[Formula: see text]nm and 10[Formula: see text]nm and found that the 30[Formula: see text]nm ultrathin silicon nanowire anode has the most stable properties for use in lithium-ion batteries. The above anode demonstrates a discharge capacity of 1066.0[Formula: see text]mAh/g at a current density of 300[Formula: see text]mA/g when based on the mass of active materials; furthermore, the ultrathin silicon nanowire with average diameter of 30[Formula: see text]nm anode retains 87.5% of its capacity after the 50th cycle, which is the best among the three silicon nanowire anodes. The 30[Formula: see text]nm ultrathin silicon nanowire anode has a more proper average diameter and more efficient content of SiOx. The above prevents the 30[Formula: see text]nm ultrathin silicon nanowires from pulverization and broken during cycling, and helps the 30[Formula: see text]nm ultrathin silicon nanowires anode to have a stable SEI layer, which contributes to its high stability.

Theoretical Modeling of Internal Ionic Resistance Due to SEI Layer Formation in Li/S Batteries

2015 ◽  
Vol 1774 ◽  
pp. 63-68
Author(s):  
M. Behzadirad ◽  
O. Lavrova ◽  
T. Busani
Keyword(s):  
Cycling Performance ◽  
High Energy ◽  
Internal Resistance ◽  
Layer Formation ◽  
Capacity Fading ◽  
Excellent Performance ◽  
Battery Cell ◽  
Energy Applications ◽  
Electrode Degradation ◽  
Sei Layer

ABSTRACTLi/S batteries have received too much attention due to their considerable theoretical energy density suitable for high energy applications. Here, we study the consequences of the SEI layer on internal resistance of the single battery cell due to polysulfide (PS) shuttling. The growth in resistance is related to the capacity fading of the cell. Using a model of series resistors, the total internal ionic resistance over cycling performance is expressed and compared for various nanostructured cathodes at different rates. It has been shown that SEI layer is the most significant factor in increasing of ionic resistance at the beginning of the battery aging, while electrode degradation and other phenomena are dominating resistance rise over higher cycles. We also demonstrate that cathodes with smaller equivalent porosity represent an excellent performance in preventing internal resistance enhancement.

scholarly journals Improved Cycling Performance of Intermetallic Anode by Minimized SEI Layer Formation

2018 ◽  
Vol 165 (7) ◽  
pp. A1486-A1491 ◽  
Author(s):  
Hiroko Kuwata ◽  
Masaki Matsui ◽  
Hidetoshi Sonoki ◽  
Yusuke Manabe ◽  
Nobuyuki Imanishi ◽  
...  
Keyword(s):  
Cycling Performance ◽  
Layer Formation ◽  
Sei Layer

Spectroscopic Compositional Analysis of Electrolyte during Initial SEI Layer Formation

2014 ◽  
Vol 118 (31) ◽  
pp. 17383-17394 ◽  
Author(s):  
Gerald Gourdin ◽  
John Collins ◽  
Dong Zheng ◽  
Michelle Foster ◽  
Deyang Qu
Keyword(s):  
Compositional Analysis ◽  
Layer Formation ◽  
Sei Layer

Investigation of SEI Layer Formation in Conversion Iron Fluoride Cathodes by Combined STEM/EELS and XPS

2015 ◽  
Vol 119 (18) ◽  
pp. 9762-9773 ◽  
Author(s):  
M. Sina ◽  
R. Thorpe ◽  
S. Rangan ◽  
N. Pereira ◽  
R. A. Bartynski ◽  
...  
Keyword(s):  
Layer Formation ◽  
Iron Fluoride ◽  
Sei Layer ◽  
Conversion Iron
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