Galactomannan binding agents for silicon anodes in Li-ion batteries

2015 ◽  
Vol 3 (22) ◽  
pp. 12023-12030 ◽  
Author(s):  
Martin K. Dufficy ◽  
Saad A. Khan ◽  
Peter S. Fedkiw
Keyword(s):  
Silicon Nanoparticles ◽  
Li Ion Batteries ◽  
Extraction Capacity ◽  
Silicon Anodes ◽  
Binding Agents ◽  
Li Ion

The high Li-extraction capacity can be owed to the favorable interactions between silicon nanoparticles and the galactomannan binders.

scholarly journals Impact of Surface Chemistry of Silicon Nanoparticles on the Structural and Electrochemical Properties of Si/Ni3.4Sn4 Composite Anode for Li-Ion Batteries

Nanomaterials ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 18
Author(s):  
Tahar Azib ◽  
Claire Thaury ◽  
Fermin Cuevas ◽  
Eric Leroy ◽  
Christian Jordy ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Electrochemical Properties ◽  
Large Scale ◽  
Silicon Nanoparticles ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Chemical Homogeneity ◽  
Electrochemical Behaviors ◽  
Pure Silicon ◽  
Li Ion

Embedding silicon nanoparticles in an intermetallic matrix is a promising strategy to produce remarkable bulk anode materials for lithium-ion (Li-ion) batteries with low potential, high electrochemical capacity and good cycling stability. These composite materials can be synthetized at a large scale using mechanical milling. However, for Si-Ni3Sn4 composites, milling also induces a chemical reaction between the two components leading to the formation of free Sn and NiSi2, which is detrimental to the performance of the electrode. To prevent this reaction, a modification of the surface chemistry of the silicon has been undertaken. Si nanoparticles coated with a surface layer of either carbon or oxide were used instead of pure silicon. The influence of the coating on the composition, (micro)structure and electrochemical properties of Si-Ni3Sn4 composites is studied and compared with that of pure Si. Si coating strongly reduces the reaction between Si and Ni3Sn4 during milling. Moreover, contrary to pure silicon, Si-coated composites have a plate-like morphology in which the surface-modified silicon particles are surrounded by a nanostructured, Ni3Sn4-based matrix leading to smooth potential profiles during electrochemical cycling. The chemical homogeneity of the matrix is more uniform for carbon-coated than for oxygen-coated silicon. As a consequence, different electrochemical behaviors are obtained depending on the surface chemistry, with better lithiation properties for the carbon-covered silicon able to deliver over 500 mAh/g for at least 400 cycles.

scholarly journals Ni–Sn intermetallics as an efficient buffering matrix of Si anodes in Li-ion batteries

2020 ◽  
Vol 8 (35) ◽  
pp. 18132-18142 ◽  
Author(s):  
Tahar Azib ◽  
Nicolas Bibent ◽  
Michel Latroche ◽  
Florent Fischer ◽  
Jean-Claude Jumas ◽  
...  
Keyword(s):  
Silicon Nanoparticles ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Cycle Life ◽  
Li Ion Batteries ◽  
Long Cycle ◽  
Long Cycle Life ◽  
Intermetallic Matrix ◽  
Li Ion ◽  
Si Anodes

High-capacity Si-based anodes with good coulombic efficiency and long-cycle life are achieved by embedding silicon nanoparticles in dual Ni3Sn4/Ni3Sn2 active/inactive intermetallic matrix.

scholarly journals Tailoring the Surface of Silicon Nanoparticles for Enhanced Chemical and Electrochemical Stability for Li-Ion Batteries

2019 ◽  
Vol 2 (9) ◽  
pp. 6176-6183 ◽  
Author(s):  
Sisi Jiang ◽  
Bin Hu ◽  
Ritu Sahore ◽  
Haihua Liu ◽  
Gregory F. Pach ◽  
...  
Keyword(s):  
Silicon Nanoparticles ◽  
Electrochemical Stability ◽  
Li Ion Batteries ◽  
Li Ion

scholarly journals Morphology engineering of silicon nanoparticles for better performance in Li-ion battery anodes

2020 ◽  
Vol 2 (11) ◽  
pp. 5335-5342 ◽  
Author(s):  
Samson Y. Lai ◽  
Jan Petter Mæhlen ◽  
Thomas J. Preston ◽  
Marte O. Skare ◽  
Marius U. Nagell ◽  
...  
Keyword(s):  
Silicon Nanoparticles ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Si Nanoparticles ◽  
Morphology Engineering ◽  
Li Ion

To demonstrate the influence of the origin of Si materials on their performance in Li-ion batteries, Si nanoparticles were synthesized via silane pyrolysis. We highlight the importance of morphology engineering for creating long-lasting materials for Li-ion batteries.

Confining Silicon Nanoparticles within Freestanding Multichannel Carbon Fibers for High-Performance Li-Ion Batteries

2019 ◽  
Vol 2 (7) ◽  
pp. 5214-5218 ◽  
Author(s):  
Xiao Chen ◽  
Pei Hu ◽  
Jingwei Xiang ◽  
Renyuan Zhang ◽  
Yunhui Huang
Keyword(s):  
Carbon Fibers ◽  
High Performance ◽  
Silicon Nanoparticles ◽  
Li Ion Batteries ◽  
Li Ion

Titanium Monoxide-Stabilized Silicon Nanoparticles with a Litchi-like Structure as an Advanced Anode for Li-ion Batteries

2020 ◽  
Vol 12 (43) ◽  
pp. 48467-48475
Author(s):  
Jing Hu ◽  
Qi Wang ◽  
Liang Fu ◽  
Ranjusha Rajagopalan ◽  
Yan Cui ◽  
...  
Keyword(s):  
Silicon Nanoparticles ◽  
Titanium Monoxide ◽  
Li Ion Batteries ◽  
Li Ion

Dichlorosilane-derived nano-silicon inside hollow carbon spheres as a high-performance anode for Li-ion batteries

2017 ◽  
Vol 5 (19) ◽  
pp. 9262-9271 ◽  
Author(s):  
Tony Jaumann ◽  
Maik Gerwig ◽  
Juan Balach ◽  
Steffen Oswald ◽  
Erica Brendler ◽  
...  
Keyword(s):  
High Performance ◽  
Silicon Nanoparticles ◽  
Li Ion Batteries ◽  
Carbon Spheres ◽  
Li Ion ◽  
Nano Silicon ◽  
Scalable Synthesis ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

A scalable synthesis for a large amount of silicon nanoparticles (<10 nm) embedded within hollow carbon spheres as a high-performance anode for Li-ion batteries.

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