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JNTG

JNTG

240-11 Naehyangan-gil, Jeongnam-myeon, Hwaseong-si, ,
Gyeonggi-do ,
18523
South Korea
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GF (Graphite Felt)

GF (Graphite Felt)

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JNTG's Graphite Felt (GF) stands out due to its impressive technical specifications and application in energy storage systems (ESS), particularly in vanadium redox flow batteries (VRFB). With a minimum carbon content of 97%, this GF ensures high durability and superior electrical conductivity, making it a vital component in enhancing ESS performance. JNTG utilizes advanced surface treatment technology to achieve a highly graphitized GF, ensuring uniform oxidation and resin absorption. This results in exceptional voltage efficiency and longer lifespan compared to competitors' products. The graphitization process allows customization of thickness and density, optimizing the GF for various VRFB structures. Currently, efforts are being focused on developing a 1mm thin-film graphite felt to improve energy density. With superior thermal and chemical treatments, JNTG's GF ensures consistent performance, solidifying its position as a leading solution in the energy storage market.

Details

At least 97% carbon content. Highly durable in prolonged driving conditions. High electrical conductivity.

The graphite felt (GF) is an important component of energy storage systems (ESS). It provides the reaction site (or catalyzes) the vanadium ion's redox reaction. It also provides an electrical connection between the catalyst layer and separator plate, serving as an important component that enables electron transport.

A flow battery is a rechargeable battery in which the reactive electrolytes are supplied to the stacks from the electrolyte tank. JNTG's specialized surface treatment technology allows our GF electrodes to have a high graphite degree, resulting in excellent performance and durability.

Our GF undergoes a graphitization process that give it at least a 97% carbon content. It displays high durability in prolonged driving conditions and high electrical conductivity. We can deliver products in sheet or roll form. We can also control their thickness and density, optimizing them for the particular structure of the VRFB system the customer needs. The GFs do have to become thinner as part of improving the energy density of stacks. The thin-film (1mm) graphite felt is currently in development.

 

Features & Specifications

  • We can supply both mass-production grade and high-quality GF electrodes
  • Our distinctive surface treatment technology allows a high level of electrolyte flow and electrical conductivity, ensuring uniform and high levels of performance

Thermal Treatment (Competitor)

Resin absorption is uneven across and below the surface
Overoxidation of GF surface reduces durability

Thermal & Chemical Treatment (JNTG)

Uniform levels of oxidation and resin absorption across and below graphite felt surface
Highly durable, high voltage efficiency

Production Process

  • In-house carbonized felt production allows us to control thickness, weight, etc.
  • The simultaneous use of chemical and thermal activation techniques allow us to activate the carbon uniformly both on and below the surface
  • Our experience with making products in various sizes puts us in an excellent position to supply materials for stack production

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