Graphite carbon fiber battery

Abstract

The invention discloses a graphite carbon fiber battery which consists of a crystalline flake graphite positive electrode, a carbon fiber electricity storage layer, a porous glass fiber isolation layer and a crystalline flake graphite negative electrode, wherein a space between the crystalline flake graphite positive electrode and the crystalline flake graphite negative electrode is filled with the carbon fiber electricity storage layer and the porous glass fiber isolation layer; a compound electrolyte is stored in the porous glass fiber isolation layer and contains a zinc chloride aqueous solution and an agave plant extracting solution which are at a volume ratio of (4-6):1. According to the graphite carbon fiber battery, crystalline flake graphite fakes are taken as battery electrode materials, so that the cost is lowered, favorable capacitance is obtained, the reversible capacity can be greatly improved, and the cycle life of the graphite carbon fiber battery can be greatly prolonged. The compound electrolyte is not doped with any acidic materials, and the agave plant extracting solution is used, so that the waste compound electrolyte even can be recycled to serve as an agriculture fertilizer.

Description

technical field [0001] The invention relates to the battery field, in particular to a graphite carbon fiber battery. Background technique [0002] A fuel cell (Proton Exchange Membrane fuel Cell, abbreviation: PEMFC) is a power generation device that directly converts the chemical energy in fuel and oxidant into electrical energy through the electrocatalytic reaction on the electrode. The fuel cell bipolar plate is one of the key components of the fuel cell, generally it is composed of a plate and a flow field. An ideal bipolar plate should have the characteristics of good electrical and thermal conductors, good mechanical properties, good gas barrier properties, low density, and good corrosion resistance. In a common PEMFC, the flow field and the plate can be integrated or separated. At present, the research and application of bipolar plates are mainly concentrated on metal material plates, molded material plates and graphite material plates. Well, the weakness is poor c...

AI Technical Summary

Problems solved by technology

At present, the research and application of bipolar plates are mainly concentrated on metal material plates, molded material plates and graphite material plates. Well, the weak point is poor corrosion resistance

(2) The molded material bipolar plate requires a large one-time investment in advance, and there is a trade-off between conductivity and strength

[0003] In terms of graphite bipolar plates, WO0041260 mentions the use of flexible graphite plates to prepare bipolar plates. The bipolar plates are first pressed and then filled with glue. The adhesive is mainly polyvinylidene fluoride. The detailed preparation process is not mentioned. In terms of the influence of the bipolar plate structure on the resistance, the bipolar plate adopts a two-layer structure, that is, the hydrogen flow field plate and the water cavity are used as a plate, and the oxygen flow field plate is used as a plate, and the two are bonded together to form a bipolar plate. The disadvantage is that the pressing process is complicated, and the hydrogen plate is difficult to form due to the flow field on both sides, and it is easy to break, which leads to a high scrap rate

[0004] In the existing fuel cells, there are still the following disadvantages: high material cost, unstable discharge potential curve, acidic substances mixed in the electrolyte, which is inconvenient to come out after scrapping, and will also cause environmental pollution

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