Metallic Negatives

Binder, Leo

doi:10.1002/9783527637188.ch8

Cited by 3 publications

(2 citation statements)

References 166 publications

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“…Pure p -type elements like Si or Sn are considered as promising to develop negative electrodes for Li-ion batteries [ 12 , 13 , 14 ]. Indeed, they can both be lithiated [ 15 ] to form binary compounds (Li 4.4 Sn and Li 3.75 Si) with very large electrochemical capacities (994 and 3600 mAhg −1 , respectively) [ 12 , 16 , 17 ]. In addition to their high theoretical capacity, these elements have low potential and environmental friendliness.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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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.

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Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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“…Cadmium has been employed also as the negative electrode in less popular Cd/AgO and Cd/HgOsystems. 1,2 The large hydrogen overpotential is a particular advantage of this metal because it makes any additives otherwise required to suppress hydrogen evolution in aqueous electrolyte solutions unnecessary.…”

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confidence: 99%

The Cadmium Electrode Revisited: Kinetic Data

Liu

Gao

Holze

et al. 2017

J. Electrochem. Soc.

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Novel Aqueous Zinc–Halogenate Flow Batteries as an Offspring of Zinc–Air Fuel Cells for Use in Oxygen‐Deficient Environment

et al. 2021

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Autonomous and portable electronic devices require cheap energy storage units of ever‐increasing power and energy densities. Zinc/halogenate flow battery is proposed as a new type of reserve or emergency power supply unit. The battery uses a mechanically rechargeable zinc anode in contact with neutral aqueous salt electrolyte, cation‐exchange membrane, and a carbonaceous flow through cathode, at which aqueous acidified halogenate is reduced to halide in a six‐electron process. A new multielectron oxidizer, aqueous iodate, that can be used in other electrochemical power sources, is introduced. It is shown that iodate can be readily reduced in acidic media at cheap carbonaceous electrodes. Electrochemical experiments with stationary and rotating disk glassy carbon electrodes reveal that in acidic aqueous electrolytes reduction of iodate can be as fast as earlier studied reduction of bromate. Theoretical energy densities per reactants of Zn/bromate and Zn/iodate batteries are 1.2 and 1.45 kWh L−1, respectively. Area‐specific power of the single cells of these batteries reaches 0.57 W cm−2 at 50 °C.

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Metallic Negatives

Cited by 3 publications

References 166 publications

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

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

The Cadmium Electrode Revisited: Kinetic Data

Novel Aqueous Zinc–Halogenate Flow Batteries as an Offspring of Zinc–Air Fuel Cells for Use in Oxygen‐Deficient Environment

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