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Preparation of Low Surface Area Si-Alloy Anodes for Li-Ion Cells by Ball Milling
(The Electrochemical Society, 2022-06-22)
A new and simple 2-step milling technique is utilized to produce Si–Ti–N alloys with significantly reduced surface area compared to conventional ball milling, while still attaining a full amorphous active Si phase. Surface ...
Li Insertion in Ball Milled Si-Mn Alloys
(The Electrochemical Society, 2018-06-08)
Si1-xMnx (0 ≤ x ≤0.5, x=0.05)alloyswereprepared by ball milling and studied as negative electrode materials in Li cells. These alloys were found to be unique amongtransition metals. When x ≤ 0.35, the alloys are essentially ...
Sintered polymeric binders for Li-ion battery alloy anodes
(www.nrcresearchpress.com/cjc, 2018-11-28)
The cycling performance in lithium half cells of Si alloy electrodes with polyvinylidene fluoride or polyimide binders were evaluated after the electrodes were cured at temperatures below and above the binder carbonization ...
Engineered Particle Synthesis by Dry Particle Microgranulation
(Elsevier Inc, 2020-04-14)
Highlights
* A method of making monodisperse engineered ∼10-μm particles is introduced
* Core-shell, spherical, and tetrahedral particles demonstrated at ∼100% yield
* Spherical layered oxides for Li-ion batteries ...
Stabilizing NaCrO2 by Sodium Site Doping with Calcium
(The Electrochemical Society, 2019-06-14)
Layered cathode materials based on abundant, low cost raw materials have garnered interest in recent years. O3-type NaCrO2 is a promising cathode material as it offers decent energy density and is easy to synthesize. In ...
Inorganic Compounds as Binders for Si-Alloy Anodes
(The Electrochemical Society, 2021-02-01)
The inorganic compounds, lithium polysilicate (Li2Si5O11), sodium polyphosphate ((NaPO3)n), and lithium phosphate monobasic (H2LiPO4) were investigated as the sole binders in Si-alloy and graphite electrodes for Li cells. ...
LiF as an Alloy Component or Slurry Additive in Si-Alloy Anodes
(The Electrochemical Society, 2020-12-10)
Electrolyte additives are commonly used to improve electrochemical performance in Li-ion cells. The use of solids as electrolyte additives is far less common. Here, Si40'(FeSi2)(60−x)'(LiF)(x)' (' = volume percent) alloys ...
Polyaniline Electrode Activation in Li Cells
(The Electrochemical Society, 2020-04-17)
Polyaniline (PANi) can be used as an electroactive organic cathode material in Li-cells with multiple redox states. The theoretical specific capacity of the emeraldine base (PEB) is 150 mAh g−1. In this study, we show how ...
Electrochemistry and Thermal Behavior of SiOx Made by Reactive Gas Milling
(The Electrochemical Society, 2020-06-30)
SiOx with various oxygen contents were synthesized from Si powder by a simple room-temperature ball milling method by controlling the air exposure time during milling. The resulting SiOx consists of nano and amorphous Si ...
Synthesis, Lithium Insertion and Thermal Stability of Si–Mo Alloys
(The Electrochemical Society, 2020-10-05)
Li insertion was investigated in SixMo100−x (90 ≥ x ≥ 70, Δx = 10) alloys prepared by mechanical ball milling. X-ray diffraction (XRD) and quantitative phase analysis were used to analyze phase compositions of these Si–Mo ...