402030 polymer battery.Chevron invests in new battery company Natron Energy to master high-power and long-life charging technology

　　China Energy Storage Network News: Natron Energy, a developer of new power battery technology based on Prussian blue electrodes and sodium ion electrolytes, has recently completed strategic investment from the venture capital firm (CTV) of the US energy giant Chevron to support development for power demand management

　　Natron Energy, a developer of new power battery technology based on Prussian blue electrodes and sodium ion electrolytes, has recently completed a strategic investment from US energy giant Chevron Ventures (CTV) to support the development of power demand management Fixed energy storage system vehicle (EV) charging station.

　　Natron Energy was founded in 2012 as a company that was incubated while conducting battery research at Stanford University. Natron has previously been backed by venture capital investors and received funding from the U.S. Department of Energy’s Advanced Research Projects Agency-Energy (ARPA-E). )support.

　　Following the investment, Natron Energy will adapt its battery technology originally developed for data center and utility-scale applications to meet the power needs of the emerging EV fast charging market.

　　Natron's patented technology uses Prussian blue pigment in the positive and negative electrodes of the battery. Prussian blue has a unique structure and composition that allows it to store energy more quickly and reversibly than other types of battery electrodes. As a result, Prussian blue-based batteries can be fully charged and discharged tens of thousands of times at very high powers.

　　Unlike most electrode materials in lithium-ion batteries, Prussian blue, commonly used as a pigment, stores and releases energy in the form of sodium ions, making batteries based on Prussian blue electrodes economically attractive. environmentally friendly technology.

　　Regarding the application of Prussian blue in the battery field, in 2018, researchers from Natron, Lawrence Berkeley National Laboratory, and New York University published a paper in Nature Communications, reporting a Prussian blue analogue for high-rate and stable anode, thereby achieving high-speed, long-life and low-cost sodium-ion battery whole-cell system research results (I/II).

　　According to the article, a full-cell sodium-ion battery with a low-cost Prussian blue analog in the electrode and co-solvent electrolyte retains 95% of its initial discharge capacity after 1000 cycles at 1C and 95% depth of discharge.

　　In addition, Natron's electrodes charge and discharge through single-phase reactions within the stability window of this electrolyte. This eliminates the conversion reactions and electrolyte breakdown that limit the life of lead-acid and lithium-ion batteries.

　　This allows Natron to create the first battery where chemicals do not limit the life of the system, opening up new energy storage opportunities to support electric vehicle charging, renewable energy sources such as solar and wind, and industrial applications. In addition, Natron's batteries offer greater safety compared to existing technologies, as they are non-flammable against overcharging, hard short circuits, nail penetration and external heating above 200°C.

　　Jesse Teichman, who led CTV’s investment, said Chevron Technology Ventures is pleased to have the opportunity to support Natron Energy’s development of high-performance energy storage systems. The high power density and fast charging times of Natron’s unique battery technology make it an attractive storage solution for future EV power stations.

　　According to the U.S. Department of Energy, the use of fast charging stations, coupled with recent increases in electric vehicle range, reduces the range anxiety associated with battery electric vehicles and may accelerate EV adoption. However, the cost of delivering electricity to high-power fast charging stations is high. One potential technology solution for fast charging stations could be the use of stationary batteries to supplement demand for grid power.

　　Natron Energy CEO Colin Wessells said vehicle electrification will be one of the defining economic trends of the next decade. Widespread electric vehicle adoption depends, in part, on technology that enables ubiquitous fast charging and reduces driver range anxiety. As a global leader in transportation energy services, Chevron has recognized this. We are delighted that CTV has chosen to support Natron. This investment provides a significant boost as we develop and demonstrate energy storage products that make fast charging stations a reality.

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