Improved Anode Performance of Ni-P-Coated Si Thick-Film Electrodes for Li-Ion Battery

Usui, Hiroyuki; Uchida, Naoki; Sakaguchi, Hiroki

doi:10.5796/electrochemistry.80.737

Cited by 16 publications

(18 citation statements)

References 13 publications

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“…We previously reported that the Ni-P coating layer contained Ni3P based on the SAED pattern. 29 However, the XRD pattern did not show peaks that could be assigned to Ni3P, which indicates that the Ni3P content in this layer is very low.…”

Section: Electrode Preparation and Electrochemical Measurement ---Thmentioning

confidence: 89%

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Advanced Performance of Annealed Ni–P/(Etched Si) Negative Electrodes for Lithium–Ion Batteries

Domi¹,

Usui²,

Narita³

et al. 2017

J. Electrochem. Soc.

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The electrochemical performance of variously treated NiP coated Si (Ni-P/Si) negative electrodes for lithium-ion batteries was investigated. X-ray diffraction analysis revealed the formation of nickel silicide (NiSi and NiSi2) after annealing, which improved the adhesion between the NiP coating layer and Si particles. Spotty NiP particles did not aggregate on an etched Si surface due to an anchor effect, even after annealing, whereas the particles aggregated on an untreated Si surface. An annealed Ni-P/(etched Si) negative electrode maintained a discharge capacity of 2000 mA h g-1 even at the 100th cycle in an organic electrolyte, which can be attributed to NiP particles remaining on the surface of the annealed Ni-P/(etched Si) electrode even after the charge-discharge test. The annealed Ni-P/(etched Si) electrode also exhibited superior cycle performance with a reversible capacity of 1000 mA h g-1 over 750 and 1100 cycles in an organic electrolyte containing film-forming additive and an ionic liquid electrolyte, respectively. Consequently, the annealed Ni-P/(etched Si) electrode achieved both high reversible capacity and long cycle life.

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Section: Electrode Preparation and Electrochemical Measurement ---Thmentioning

confidence: 89%

“…On the other hand, the capacity fading of an untreated Ni-P/Si electrode was suppressed. We previously reported that the mechanical properties of Si particles were improved by Ni-P coating; i.e., the elastic modulus of Si increased with Ni-P coating 22,29. This means that the spotty Ni-P coating layer can effectively release the stresses from Si.…”

mentioning

confidence: 96%

Advanced Performance of Annealed Ni–P/(Etched Si) Negative Electrodes for Lithium–Ion Batteries

Domi¹,

Usui²,

Narita³

et al. 2017

J. Electrochem. Soc.

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“…In this study, we chose a sol-gel method because this method is very suitable for a large-scale production and for a structure control of products. To evaluate fundamental electrode reactions, we employed a gas-deposition method [9][10][11][12][13][14][15][16][17][18][19][20][21][22] to prepare binder-free electrodes of TiO2/Si composites, and investigated anode performance of the composite electrodes obtained.…”

Section: High Thermodynamic Stabilitymentioning

confidence: 99%

“…We have recently studied various anode materials of intermetallic compounds [8,9], Si-based composites [10][11][12][13][14][15][16][17][18][19], and pure Si [20][21][22]. As a result of these studies, we have revealed that the anode performance is remarkably improved for Si-based electrodes by certain properties of the materials combined with Si.…”

Section: Introductionmentioning

confidence: 99%

TiO2/Si composites synthesized by sol–gel method and their improved electrode performance as Li-ion battery anodes

Usui

Wasada

Shimizu

2013

Electrochimica Acta

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Composites of rutile-type TiO2 and Si were synthesized by a facile sol-gel method for a high-performance anode of Li-ion battery. We have investigated anode performance of binder-free thick-film electrodes prepared by a gas-deposition method using the TiO2/Si composites obtained. The composite electrode exhibited a remarkably improved cyclability and a good high-rate performance: a discharge capacity at the 900th cycle was 710 mA h g-1 , and a specific capacity per Si weight was as large as 1870 mA h g(Si)-1 even at a high current rate of 4.8C. It is suggested that a fast Li-ion diffusion in TiO2 provides smooth insertion/extraction of Li-ion into/from the composite

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“…To address this problem, various approaches have been carried out. − For example, it has been reported that the yield stress exceeds the stress generated during charging by setting the Si crystallite size to 10 nm or less so that the cracking of Si particles is suppressed and the cycle properties are improved. In addition, it has been reported that the cracking of Si particles can be suppressed and the cycle properties can be improved by reducing the Si particle size to 150 nm or less …”

Section: Introductionmentioning

confidence: 99%

Improvement of the Anode Properties of Lithium-Ion Batteries for SiO_x with a Third Element

et al. 2021

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Silicon oxide (SiO x ) has been placed into practical use as an anode active material for next-generation Li-ion batteries because it has a higher theoretical capacity than graphite anodes. However, the synthesis method is typically vapor deposition, which is expensive, and the poor electron conductivity of SiO x restricts high performance. In this study, we prepared M /SiO x active materials consisting of SiO x and a third element ( M = Al, B, Sn) using a low-cost mechanical milling (MM) method and investigated their electrode properties as Li-ion battery anodes. Also, the authors added a third element to improve the conductivity of the SiO 2 matrix. Al, B, and Sn were selected as elements that do not form a compound with Si, exist as a simple substance, and can be dispersed in SiO 2 . As a result, we confirmed that SiO x has a nanostructure of nanocrystalline Si dispersed in an amorphous-like SiO 2 matrix and that the third element M exists not in the nanocrystalline Si but in the SiO 2 matrix. The electron conductivity of SiO x was improved by the addition of B and Sn. However, it was not improved by the addition of Al. This is because Al 2 O 3 was formed in the insulator due to the oxidization of Al. The charge–discharge cycle tests revealed that the cycle life was improved from 170 cycles to 330 or 360 cycles with the addition of B or Sn, respectively. The improvement in electron conductivity is assumed to make it possible for SiO 2 to react with Li ions more uniformly and form a structure that can avoid the concentration of stress due to the volume changes of Si, thereby suppressing the electrode disintegration.

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Improved Anode Performance of Ni-P-Coated Si Thick-Film Electrodes for Li-Ion Battery

Cited by 16 publications

References 13 publications

Advanced Performance of Annealed Ni–P/(Etched Si) Negative Electrodes for Lithium–Ion Batteries

Advanced Performance of Annealed Ni–P/(Etched Si) Negative Electrodes for Lithium–Ion Batteries

TiO2/Si composites synthesized by sol–gel method and their improved electrode performance as Li-ion battery anodes

Improvement of the Anode Properties of Lithium-Ion Batteries for SiO_x with a Third Element

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Improved Anode Performance of Ni-P-Coated Si Thick-Film Electrodes for Li-Ion Battery

Cited by 16 publications

References 13 publications

Advanced Performance of Annealed Ni–P/(Etched Si) Negative Electrodes for Lithium–Ion Batteries

Advanced Performance of Annealed Ni–P/(Etched Si) Negative Electrodes for Lithium–Ion Batteries

TiO2/Si composites synthesized by sol–gel method and their improved electrode performance as Li-ion battery anodes

Improvement of the Anode Properties of Lithium-Ion Batteries for SiOx with a Third Element

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Improvement of the Anode Properties of Lithium-Ion Batteries for SiO_x with a Third Element