Tech Bundle

Battery Materials and Chemistry

Standalone Alternating Current (AC) Batteries and Cockcroft-Walton Multiplier
The technology owner had developed a patented standalone AC battery with a proprietary electrode design that has both the characteristics of anode and cathode. This enables the battery to generate AC power (square / pulsed wave form) from a single battery and a single switch. In a typical direct current (DC) to AC power conversion configuration used for brushless DC motors (BLDC) in drones and electric vehicles – multiple DC batteries, switches, complex battery management system and inverter circuit are needed to generate 3-phase AC to power a BLDC. The novel AC battery uses a simpler circuit design that minimises battery management system, converters and inverters. The use of the third electrode enables the voltage within the battery cells to be divided by half, e.g. while there is 4V between anode and cathode within the conventional Li-ion battery, the electrode can divide the voltage into 2V each, leading to safer operations and longer cycle life. The technology owner is looking at integrating the Cockcroft-Walton Multiplier (CWM), an established circuit that generates high DC voltage from an AC input as part of the AC battery system. The technology owner aims to boost the voltage, e.g. from 1.85V to 20V for industrial drones with an additional cost of USD200, while achieving 30% higher battery capacity with the AC battery and CWM combination. The technology owner had already developed several prototypes including a 100mA pouch cell. They are currently working on optimising the thickness of the electrode and preparing for a pilot test in industrial drones. The technology owner is seeking technical collaboration to scale up the AC battery prototype, develop integrated AC battery with CWM, conduct pilot test in drones, e-bikes, or e-wheelchair and eventually to license their technology to battery or battery parts manufacturers.
Novel Flow Frame Design for Redox Flow Battery
With the wide deployment of renewable energy harvesting devices, such as solar cells and wind turbines, there is an urgency to develop efficient and economical energy storage systems to stabilize the intermittent and often unpredictable primary power sources before the power can be channeled to the grid safely or utilized for on-site loads. Redox flow batteries (RFBs) are regarded as promising electrochemical energy storage devices due to their special features of separable energy and power capacity. However, redox flow batteries tend to have lower energy densities than integrated cell architectures. Here our inventions introduce the novel engineering design to and reduce bulk resistance with no significant increase in flow resistance, obtaining uniform flow throughout the battery cell and improving the overall system efficiency.
Production of Li-ion Batteries with Silicon-based Anode and Li-rich Cathode
Lithium ion batteries, which are the most widely used among the secondary battery types, have high capacities and cycling life. The theoretical capacity of lithium ion batteries is expected to remain at the same value in each cycle without changing the ingredients. However, this does not take place as expected and lithium ions in the battery can be produced or consumed by side reactions during charging/discharging. When the capacity stability of the battery deteriorates, there is a loss of capacity and a significant decrease in the performance of the battery occurs in long cycles. Anode and cathode materials of the batteries directly affect the capacity and cycle life. Therefore, it is very important to improve the anode and cathode materials in order to maintain stability and improve battery performance. The technology described herein is related to the development of high capacity lithium ion batteries based on silicon-based anode and lithium rich cathode materials. The anode is a silicon-based material that contains a conductive polymer additive. Polymer-Si is a porous material with a flexible shell structure, thus preventing the volumetric expansion of silicon. The cathode has been developed in special stoichiometry to maximize capacity, thermal stability and capacity retention rate. The technology provider is seeking industry partners to test-bed and commercialize the patent-pending technology. 
Silica Fibrous Material for Sorption, Separation, Catalytic and Battery Applications
Silica (SiO2) fibrous material is a special functional material with unique properties represented by amorphous fibre structure. These silica fibres can adsorb significantly more water than commercially available silica gel of the same mesoporous character. This feature is especially apparent in the range of medium relative humidity (30-70% RH), which is industrially the most important range for adsorption (in electronics, food, chemical industries, and numerous others). Owing to its porosity, the fibrous sorbent can be desorbed for its next use at significantly lower temperature (at least 20°C lower), which has a positive effect on the cost figure of the process. High specific surface area and mesoporosity are the main advantages, and make the material especially suitable for sorption and catalytic applications. The material can also be used as an adsorbent, catalytic carrier, battery electrolyte, etc.
Modular Bipolar Plate for Redox Flow Battery
With the wide deployment of renewable energy harvesting devices, such as solar cells and wind turbines, there is an urgency to develop high efficiency and economical energy storage systems to stabilize the intermittent and often unpredictable primary power sources before the power can be channelled to the grid safely or utilized for on-site loads. Redox flow batteries (RFBs) are regarded as promising electrochemical energy storage devices due to their special features of separable energy and power capacity. However, redox flow batteries tend to have lower energy densities than integrated cell architectures. Many approaches have been studied to improve the energy efficiency of RFBs. Among them, reducing shunt current loss and other parasitic loss is of great importance. This invention is capable of minimizing the shunt current in a redox flow battery through increasing the conductive path that exists between adjacent cells, without increasing maintenance cost or assembly complexity.