Improvement of intermetallics electrochemical behavior by playing with the composite electrode formulation

Silicon is the most attractive anode material of all known host materials for lithium ion batteries because of its high theoretical lithium-insertion capacity up to 4200 mAh g-1, but it is difficult to be applied for its poor cyclability caused by the mechanical invalidation for the insertion of lithium ions. Nanosilicon/CMC/AB composite electrodes doped with WC were prepared by ball milling. The effect of the structure transformation of the doped electrode on the electrochemical behavior was systematically analyzed by X-ray diffraction. The mechanical properties of doped silicon electrode play an important role on its long-term electrochemical stability. The capacity retention could be maintained about 90% after 40 cycles. It was demonstrated that the cycling stability of the nanosilicon composite electrode could get a great promotion by WC doping. The intensification of the mechanical properties is critical to enhance the performance of the composite electrode.

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The effect of dispersion of nano-carbon on electrochemical behavior of Fe/nano-carbon composite electrode

Journal of Power Sources ◽

10.1016/j.jpowsour.2008.05.009 ◽

2008 ◽

Vol 183 (1) ◽

pp. 399-402 ◽

Cited By ~ 10

Author(s):

Minato Egashira ◽

Jun-ya Kushizaki ◽

Nobuko Yoshimoto ◽

Masayuki Morita

Keyword(s):

Electrochemical Behavior ◽

Composite Electrode ◽

Carbon Composite ◽

Carbon Composite Electrode ◽

Nano Carbon

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Electrochemical Behavior of Selenium as Part of Composite Electrode in Sulfuric Acid Medium

JOURNAL OF ADVANCES IN CHEMISTRY ◽

10.24297/jac.v7i3.2373 ◽

2011 ◽

Vol 7 (3) ◽

pp. 1378-1384

Author(s):

Baeshov Abduali ◽

Ivanov Nikolay ◽

Myrzabekov Begzat

Keyword(s):

Sulfuric Acid ◽

Acid Medium ◽

Electrochemical Behavior ◽

Composite Electrode ◽

Polymer Binder ◽

Organic Polymer ◽

Effective Activation ◽

Cathode Polarization ◽

Spread Velocity ◽

Sulfuric Acid Medium

The method of productiion of the composite selenium-graphitic electrodes based on organic polymer binder was proposed. Electrochemical behavior of the elementary selenium as content of composite electrode in sulfuric acid medium was assessed. A formation of hydrogen selenide during the cathode polarization, and formation of selenite and selenate ions was shown. An influence of potential spread velocity, acid concentration, and temperature of electrolyte were evaluated. Effective activation power for cathode process was estimated using the temperature-cathodic method.

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Electrochemical behavior of N-Nitrosodiphenylamine and its determination in synthetic urine samples using a graphite-polyurethane composite electrode

Journal of Electroanalytical Chemistry ◽

10.1016/j.jelechem.2019.113747 ◽

2020 ◽

Vol 857 ◽

pp. 113747

Author(s):

Lucas V.L. Martoni ◽

Marina Baccarin ◽

Éder T.G. Cavalheiro ◽

Rafael M. Buoro

Keyword(s):

Electrochemical Behavior ◽

Composite Electrode ◽

Urine Samples ◽

Synthetic Urine ◽

Polyurethane Composite

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Preparation and electrochemical behavior of the CA/TiO2/Sb2O5 composite electrode modified with p-benzoquinone

Journal of Electroanalytical Chemistry ◽

10.1016/j.jelechem.2012.11.019 ◽

2013 ◽

Vol 690 ◽

pp. 74-82 ◽

Cited By ~ 4

Author(s):

Andrea Anilda Hoffmann da Rocha ◽

Elisangela Bueno Pires ◽

Aline da Silveira Nectoux ◽

Silvio Luis Pereira Dias ◽

Éder Claudio Lima ◽

...

Keyword(s):

Electrochemical Behavior ◽

Composite Electrode

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The Effect of Ball Milling on the Electrochemical Behavior of Silicon Composite Electrode

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.833.280 ◽

2013 ◽

Vol 833 ◽

pp. 280-285

Author(s):

Zhong Sheng Wen

Keyword(s):

Lithium Ion Batteries ◽

Ball Milling ◽

Electrochemical Behavior ◽

Anode Materials ◽

Milling Time ◽

Composite Electrode ◽

High Capacity ◽

Lithium Ion ◽

High Energy ◽

Ball Milling Time

Silicon material possesses the highest theoretic capacity (4200mAh/g, ten times of the capacity of commercialized carbon anode materials) of all known anode materials for lithium ion batteries and thus receives lots of attention to date. Silicon-containing composite electrode for lithium ion batteries was prepared by high-energy ball milling process. The microstructure and morphology of silicon electrode was investigated in detail. The effect of the structure transformation of the electrode by ball milling on the electrochemical behavior was systematically analyzed. Electrode precursors after a mediate ball milling time of 45min is beneficial to get a better cycling performance, due to the well distributed and less destroy of Carboxyl Methyl Cellulose (CMC). Weak lithium insertion into CMC occurs unavoidably in the charging-discharging process of the composite electrodes, which should be the main reason for the sudden disability of electrode. The electrochemical properties can get a dramatic enhancement within voltage window of 0.02-1.5V. Excellent cyclability with high capacity retention above 1800mAh/g after 40 cycles could be gained by controlling the ball-milling time and the voltage windows. It might be a feasible way to obtain satisfactory cyclability for high capacity anode materials.

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