Surface-Coating Regulated Lithiation Kinetics and Degradation in Silicon Nanowires for Lithium Ion Battery

ACS Nano ◽  
2015 ◽  
Vol 9 (5) ◽  
pp. 5559-5566 ◽  
Author(s):  
Langli Luo ◽  
Hui Yang ◽  
Pengfei Yan ◽  
Jonathan J. Travis ◽  
Younghee Lee ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Silicon Nanowires ◽  
Surface Coating ◽  
Lithium Ion

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.

Environmental Sustainability of Metal-Assisted Chemical Etching of Silicon Nanowires for Lithium-Ion Battery Anode

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Fenfen Wang ◽  
Xianfeng Gao ◽  
Lulu Ma ◽  
Chris Yuan
Keyword(s):  
Lithium Ion Battery ◽  
Silicon Nanowires ◽  
Environmental Sustainability ◽  
Ag Nanoparticles ◽  
Chemical Etching ◽  
Lithium Ion ◽  
Process Data ◽  
Sustainability Performance ◽  
Metal Assisted Chemical Etching ◽  
Si Wafer

Abstract Silicon nanowires (SiNWs) with three different average diameters of 90, 120, and 140 nm were synthesized by a metal-assisted chemical etching (MACE) method. Environmental sustainability of the MACE process was studied by investigating material consumptions, gas emissions, and silver nanoparticle concentrations in nitric acid solutions for 1 g of SiNWs and 1 kW h of lithium-ion battery (LIB) electrodes. It was found that the process for 90 nm SiNWs has the best sustainability performance compared with the other two processes. Specifically, in this study for 1 g of 90 nm SiNWs, 8.845 g of Si wafer is consumed, 1.09 g of H2 and 1.04 g of NO are produced, and 54.807 mg of Ag nanoparticles are found in the HNO3 solution. Additionally, for 1 kW h of LIB electrodes, the process for 90 nm SiNWs results in 1.943 kg of Si wafer consumption, 239.455 g of H2 and 239.455 g of NO emissions, and 12.040 g of Ag nanoparticles concentrations. By quantitatively investigating the material consumptions and emissions, this study assesses the sustainability performance of the MACE process for synthesizing SiNWs for use in LIBs, and thus it provides process data for the analysis and the development of sustainable production methods for SiNWs and similar anode materials for next-generation LIBs.

scholarly journals Reduced Graphene Oxide Wrapped Ultra-thin Silicon Nanowires for Lithium Ion Battery Anodes

2020 ◽  
Vol 1520 ◽  
pp. 012011 ◽  
Author(s):  
Fang Sun ◽  
Zhengguang Hu ◽  
Leyuan Wu ◽  
Jun Chen ◽  
Jie Luo ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Battery ◽  
Reduced Graphene Oxide ◽  
Silicon Nanowires ◽  
Lithium Ion ◽  
Reduced Graphene ◽  
Thin Silicon

scholarly journals Microclusters of Kinked Silicon Nanowires Synthesized by a Recyclable Iodide Process for High‐Performance Lithium‐Ion Battery Anodes

2020 ◽  
Vol 10 (41) ◽  
pp. 2002108 ◽  
Author(s):  
You Kyeong Jeong ◽  
William Huang ◽  
Rafael A. Vilá ◽  
Wenxiao Huang ◽  
Jiangyan Wang ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Silicon Nanowires ◽  
High Performance ◽  
Lithium Ion

Porous Doped Silicon Nanowires for Lithium Ion Battery Anode with Long Cycle Life

Nano Letters ◽  
2012 ◽  
Vol 12 (5) ◽  
pp. 2318-2323 ◽  
Author(s):  
Mingyuan Ge ◽  
Jiepeng Rong ◽  
Xin Fang ◽  
Chongwu Zhou
Keyword(s):  
Lithium Ion Battery ◽  
Silicon Nanowires ◽  
Lithium Ion ◽  
Cycle Life ◽  
Long Cycle ◽  
Long Cycle Life ◽  
Doped Silicon ◽  
Battery Anode

Effective Li3AlF6 Surface Coating for High-Voltage Lithium-Ion Battery Operation

2021 ◽  
Author(s):  
Hiroaki Kobayashi ◽  
Guohao Yuan ◽  
Yoshiyuki Gambe ◽  
Itaru Honma
Keyword(s):  
Lithium Ion Battery ◽  
High Voltage ◽  
Surface Coating ◽  
Lithium Ion
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