Large scale green production of ultra-high capacity anode consisting of graphene encapsulated silicon nanoparticles

2017 ◽  
Vol 5 (36) ◽  
pp. 19126-19135 ◽  
Author(s):  
Ali Reza Kamali ◽  
Hyun-Kyung Kim ◽  
Kwang-Bum Kim ◽  
R. Vasant Kumar ◽  
Derek J. Fray
Keyword(s):  
Electrochemical Performance ◽  
Molten Salts ◽  
Large Scale ◽  
Silicon Nanoparticles ◽  
Graphene Nanosheets ◽  
High Capacity ◽  
Li Ion Batteries ◽  
High Quality ◽  
Green Production ◽  
Li Ion

High quality graphene nanosheets produced in molten salts were found to be capable of wrapping silicon nanoparticles, leading to the fabrication of graphene encapsulated silicon nanoparticles with an excellent stable electrochemical performance as anode material for Li-ion batteries.

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.

Improved electrochemical performance of LiCoO2 electrodes for high-voltage operations by Ag thin film coating via magnetron sputtering

MRS Advances ◽  
2018 ◽  
Vol 3 (60) ◽  
pp. 3513-3518 ◽  
Author(s):  
Taner Zerrin ◽  
Mihri Ozkan ◽  
Cengiz S. Ozkan
Keyword(s):  
Thin Film ◽  
Magnetron Sputtering ◽  
Electrochemical Performance ◽  
High Voltage ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Interface Layer ◽  
Li Ion Batteries ◽  
Electrode Structure ◽  
Li Ion

ABSTRACTIncreasing the operation voltage of LiCoO2 (LCO) is a direct way to enhance the energy density of the Li-ion batteries. However, at high voltages, the cycling stability degrades very fast due to the irreversible changes in the electrode structure, and formation of an unstable solid electrolyte interface layer. In this work, Ag thin film was prepared on commercial LCO cathode by using magnetron sputtering technique. Ag coated electrode enabled an improved electrochemical performance with a better cycling capability. After 100 cycles, Ag coated LCO delivers a discharge capacity of 106.3 mAh g-1 within 3 - 4.5 V at C/5, which is increased by 45 % compared to that of the uncoated LCO. Coating the electrode surface with Ag thin film also delivered an improved Coulombic efficiency, which is believed to be an indication of suppressed parasitic reactions at the electrode interface. This work may lead to new methods on surface modifications of LCO and other cathode materials to achieve high-capacity Li-ion batteries for high-voltage operations.

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.

Effect of cycling conditions on the electrochemical performance of high capacity Li and Mn-rich cathodes for Li-ion batteries

2016 ◽  
Vol 318 ◽  
pp. 9-17 ◽  
Author(s):  
Prasant Kumar Nayak ◽  
Judith Grinblat ◽  
Elena Levi ◽  
Boris Markovsky ◽  
Doron Aurbach
Keyword(s):  
Electrochemical Performance ◽  
High Capacity ◽  
Li Ion Batteries ◽  
Li Ion

Electrochemical Performance of a Layered-Spinel Integrated Li[Ni1/3Mn2/3]O2 as a High Capacity Cathode Material for Li-Ion Batteries

2015 ◽  
Vol 27 (7) ◽  
pp. 2600-2611 ◽  
Author(s):  
Prasant Kumar Nayak ◽  
Judith Grinblat ◽  
Mikhael D. Levi ◽  
Ortal Haik ◽  
Elena Levi ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
High Capacity ◽  
Li Ion Batteries ◽  
Li Ion

Nanostructured anode materials for Li-ion batteries

2008 ◽  
Vol 80 (11) ◽  
pp. 2283-2295 ◽  
Author(s):  
Nahong Zhao ◽  
Lijun Fu ◽  
Lichun Yang ◽  
Tao Zhang ◽  
Gaojun Wang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Performance ◽  
Electrochemical Properties ◽  
Anode Materials ◽  
High Capacity ◽  
Rate Capability ◽  
Core Shell ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Cycling Behavior

This paper focuses on the latest progress in the preparation of a series of nanostructured anode materials in our laboratory and their electrochemical properties for Li-ion batteries. These anode materials include core-shell structured Si nanocomposites, TiO2 nanocomposites, novel MoO2 anode material, and carbon nanotube (CNT)-coated SnO2 nanowires (NWs). The substantial advantages of these nanostructured anodes provide greatly improved electrochemical performance including high capacity, better cycling behavior, and rate capability.

Review on Challenges and Recent Advances in the Electrochemical Performance of High Capacity Li- and Mn-Rich Cathode Materials for Li-Ion Batteries

2017 ◽  
Vol 8 (8) ◽  
pp. 1702397 ◽  
Author(s):  
Prasant Kumar Nayak ◽  
Evan M. Erickson ◽  
Florian Schipper ◽  
Tirupathi Rao Penki ◽  
Nookala Munichandraiah ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Materials ◽  
High Capacity ◽  
Li Ion Batteries ◽  
Recent Advances ◽  
Li Ion

Coupling of a conductive Ni3(2,3,6,7,10,11-hexaiminotriphenylene)2 metal–organic framework with silicon nanoparticles for use in high-capacity lithium-ion batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 1629-1642 ◽  
Author(s):  
Aqsa Nazir ◽  
Hang T. T. Le ◽  
Chan-Woo Min ◽  
Arvind Kasbe ◽  
Jaekook Kim ◽  
...  
Keyword(s):  
Silicon Nanoparticles ◽  
Metal Organic Framework ◽  
High Capacity ◽  
Lithium Ion ◽  
Two Dimensional ◽  
Li Ion Batteries ◽  
Si Nanoparticles ◽  
Metal Organic ◽  
Li Ion ◽  
Organic Framework

A composite of Si nanoparticles and a two dimensional porous conductive Ni3(2,3,6,7,10,11-hexaiminotriphenylene)2 (Ni3(HITP)2) metal–organic framework (MOF), namely Si/Ni3(HITP)2, is suggested as a potential anode material for Li-ion batteries.

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