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Carbon additives for negative electrodes

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TLDR
In this article, a carbon additive prewetted with an acid (e.g., H2SO4) and a lead-containing material is described, and methods of making such compositions, and pastes and electrodes made therefrom.
Abstract
Disclosed herein are compositions comprising: a carbon additive prewetted with an acid (e.g., H2SO4); and a lead-containing material. Also disclosed are methods of making such compositions, and pastes and electrodes made therefrom.

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Patent

Humic acid-bonded metal foil film current collector and battery and supercapacitor containing same

Aruna Zhamu, +1 more
TL;DR: A humic acid-bonded metal foil current collector in a battery or supercapacitor, comprising of a thin metal foil having two opposed but parallel primary surfaces, is described in this paper.
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Humic acid-based supercapacitors

TL;DR: In this article, a supercapacitor electrode comprising a mixture of graphene sheets and humic acid is presented, where the graphene sheets are selected from a pristine material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.001% to 5% by weight of non carbon elements.
Patent

Process for producing humic acid-bonded metal foil film current collector

Aruna Zhamu, +1 more
TL;DR: In this paper, a process for producing a highly oriented humic acid (HA) film-bonded metal foil current collector is described, which consists of preparing a dispersion of HA or chemically functionalized HA (CHA) dispersed in a liquid medium, depositing the HA or CHA dispersion onto a primary surface of a metal foil to form a wet layer under an orientation-inducing stress, and removing the liquid medium to form the dried layer having hexagonal carbon planes and an inter-planar spacing d 002 of 0.4 nm to 1.3
Patent

Integral 3d humic acid-carbon hybrid foam and devices containing same

Aruna Zhamu, +1 more
TL;DR: In this paper, an integral 3D humic acid-carbon hybrid foam composed of multiple pores and pore walls is presented, where pore wall contains single-layer or few-layer humic acids sheets chemically bonded by a carbon material at their edges and have a carbon-to-humic acid weight ratio from 1/200 to 1/2.
Patent

Humic acid-derived conductive foams and devices

Aruna Zhamu, +1 more
TL;DR: In this paper, a humic acid-derived foam composed of multiple pores and pore walls is presented, where the pore wall contains single-layer or few-layer humic acids-derived hexagonal carbon atomic planes or sheets.
References
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Electrodes containing conductive metal oxides

TL;DR: In this article, an electrode suitable for use as a lead-acid battery plate contains an inorganic metal oxide additive which enhances the formation of the plate, but does not participate in the electrode reaction.
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Electrically conductive compositions of carbon particles and methods for their production.

TL;DR: In this article, the conductive compositions of carbon particles having thin coatings of conductive polymer are disclosed, and the thin coating of conductives interact with each carbon particle and protect the carbon particles from conductive failure.
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Lead-acid battery formulations containing discrete carbon nanotubes

TL;DR: In this article, a method to form a lead-acid battery with discrete carbon nanotubes was proposed. But this method is not suitable for lead acid batteries with high energy dissipation.
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TL;DR: In this paper, an electrochemical cell has a cathode containing an expanded graphite as an electrically conductive carbon material, which has a kerosene absorption in the range of 2.2 to 3.5 ml/g.
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Negative-electrode active material for secondary battery

TL;DR: In this article, a negative-electrode active material for the secondary battery is provided, which is a kneaded mixture comprising: a raw active material comprising a metal and an oxide of the metal; and carbon, the carbon being contained in such an amount that the total oil absorption thereof is at least 4.7 mL per mol of the active material.