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2.4 Summary In order to collect reliable data from the materials that are the key elements in seawater batteries, a coin-type cell, a flow-cell tester, and their key compartments were designed and fabricated by trial and error and the testing environment was also determined. We examined the wettability of seawater on the carbon felt cathode current collector and its effect on the charge-discharge cycling performance. The air-heating process of carbon felts made the surface hydrophilic, resulting in a reduced ΔV of the cell (~1.4 V) at a current rate of 0.025 mA cm-2, compared to the cell using a PCF (~1.6 V). We also showed that the flow of the seawater catholyte reduced ΔV (~0.7 V) by 36% from ~1.1 V under no flow state, probably because of the facilitated diffusion of the reactants (water and DO) to the cathode current collector and thereby the decreased concentration polarization during the charge and discharge processes. After normalizing the cell design and testing conditions, a comparative test was performed to identify the key elements for improving cell performance. The comparative study between the HCF cathode current collector and fast Na+ ion-intercalating NiHCF electrode as the cathode showed that the OER/ORR in the seawater catholyte was the most probable rate-determining reaction of seawater batteries. The use of electrocatalyst materials in the cathode improved the battery performance, and each collected data was reliable and comparative. Therefore, further experiments on promising materials in seawater batteries can be conducted using the customized coin-type cell, which is an essential prerequisite for the practical implementation of seawater batteries as the next generation ESS. 58PDF Image | China solar seawater battery
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Product and Development Focus for Salgenx
Redox Flow Battery Technology: With the advent of the new USA tax credits for producing and selling batteries ($35/kW) we are focussing on a simple flow battery using shipping containers as the modular electrolyte storage units with tax credits up to $140,000 per system. Our main focus is on the salt battery. This battery can be used for both thermal and electrical storage applications. We call it the Cogeneration Battery or Cogen Battery. One project is converting salt (brine) based water conditioners to simultaneously produce power. In addition, there are many opportunities to extract Lithium from brine (salt lakes, groundwater, and producer water).Salt water or brine are huge sources for lithium. Most of the worlds lithium is acquired from a brine source. It's even in seawater in a low concentration. Brine is also a byproduct of huge powerplants, which can now use that as an electrolyte and a huge flow battery (which allows storage at the source).We welcome any business and equipment inquiries, as well as licensing our flow battery manufacturing.CONTACT TEL: 608-238-6001 Email: greg@salgenx.com (Standard Web Page)