XNRGI Inc fka NPWZ

[ShortonCash]

They along with a few others have a patent on carbon nano-tubes for supercapacitors so they appear to be experts in the field.

http://ma.ecsdl.org/content/MA2018-02/4/291

Posted by: Bill_ENG
In reply to: stockcatman who wrote msg# 27323 Date:8/17/2018 12:07:59 PM
Post #27324 of 27373

It appears that Diaz was a contract lab tech at Polaris Battery Labs or may still be. Has probably worked on the battery there. Now a research engineer.

Mcgee is from Oregon Institute of Technology · Department of Electrical Engineering and Renewable Energy

They along with a few others have a patent on carbon nano-tubes for supercapacitors so they appear to be experts in the field.

Bill

XNRGI2008 Friday, 08/17/18 01:05:17 PM
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I’d doubt he’d tag his name to the tech if he and d Couto couldn’t prove the concep battery


ShortonCash Tuesday, 07/31/18 11:23:01 PM
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[b[color=red]]High-Power and Safe Lithium Metal Battery in 3D Substrate
Thursday, 4 October 2018: 14:10 [color=red][/color]
Galactic 8 (Sunrise Center) [/color]
S. Petrovic (Oregon Institute of Technology, XNRIGI), C. D'Couto, C. Diaz, and M. McGee (XNRGI)
The use of 3D structures has been shown to have the high potential for solving several problems that are currently preventing the performance improvements in lithium batteries. The high-surface area structures can provide elimination of dendrites and elimination of safety concerns, improved energy density and specific energy, high power density, low cost per kWh and improvement in cycle life. Compared with traditionally designed battery electrodes three-dimensional structures also enable short diffusion path in the active mass, better current collection and lower impedance.
A perfectly engineered three-dimensional structure is demonstrated using porous silicon. Both anode and cathode can be fabricated on the porous substrate, leading to numerous improvements in performance. A lithium metal anode in porous silicon is shown to be dendrite-free for over 200 cycles as a result geometrical effects in suppressing dendrite growth and low current density. The suppression of dendrites enables the use of lithium metal anodes and eliminating the safety concerns. Both anode and cathode also show improved specific capacity as a result of lower overall impedance and better utilization of the active material; as well as higher power density due to larger three-phase boundary and perfectly arranged active material inside uniformly spaced pores.

A complete cell based on the porous silicon structure can use any anode and cathode material; and can therefore be optimized for a particular application or requirements. It is also amenable to use of both liquid and solid electrolytes. A design is demonstrated that enables lithium metal air battery using a solid electrolyte. Another design shows a monolithic full cell within a single porous silicon wafer, eliminating the need for a separator or additional packaging.

Results of a half-cell, full cell and symmetrical cell testing are presented. The half-cell testing demonstrates the basic behavior of the porous structure and shows current densities in the excess of 5 mA/cm2 (geometrical or projected surface area), but with a low current density per true surface area. The symmetrical cell testing shows stable anode cycling and absence of dendrites for over 200 cycles, while the full cell testing proves the feasibility of pairing the porous silicon metal lithium anode with several conventional cathode materials.




XNRGI battery electrode technology is a perfectly scalable platform model.

RWFZS Saturday, 06/09/18 01:52:48 PM
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"XNRGI is on the cusp of one of the fastest, deepest, most consequential disruptions of energy storage in history."


http://solarquarter.com/index.php/perspectives/10999-storage-and-smart-solar-technologies

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Dr. Chris D’couto,CEO,XNRGI NEAH Power Systems India Pvt. Ltd.

Tracing the technological progress of Energy storage in India, could the next big technological revolution be in the storage of solar energy?

When the sun doesn’t shine? The world we live in operates 24/7, battery storage technologies are emerging as a critical part of the solution to increase access to electricity in conjunction with solar PV in solar home systems, as well as providing stability services to mini-grids, improving the power quality and increasing the potential share of variable renewables in such remote grids. XNRGI is on the cusp of one of the fastest, deepest, most consequential disruptions of energy storage in history. The lithium battery technology is at the crossroads. The fundamental limitations and outdated electrode manufacturing methods have considerably slowed down the progress. The expected improvements in performance have not happened and the hope for breakthroughs towards new active materials is not likely. A battery is considered the weakest link in many flourishing applications such as electrical vehicles and other mobile applications; and the obstacle towards widespread proliferation of groundbreaking devices. And while the battery industry stagnates, the next 4th industrial revolution will not wait, and it desperately demands a better, lighter, and cheaper portable power source that scales across ever increasing energy storage needs from transport, consumer electronics to the grid. The electrical vehicle application in particular is on a high trajectory towards completely taking over the vehicle industry, but it needs a battery that will match the demand. Present battery technology is not capable of manufacturing scale to meet the demands of the application in terms of energy density, cycle life, safety or cost.

“India’s total demand for energy will more than double by 2030, while electricity demand will almost triple This assumes sufficient uptake to double the share of renewables in the global energy mix in less than a decade and a half. With growing demand for electricity storage from stationary and mobile applications, the total stock of electricity storage capacity will need to grow more than 150%, from an estimated 4.67 terawatt-hours (TWh) in 2017 to 12 TWh or more by 2030.”
IRENA 2017 Energy Storage Report
How are you gearing up for this technological revolution?

The XNRGI (exponential energy) battery technology concept is based on a porous silicon substrate that will become the ultimate pathway towards achieving the goal of superior battery performance in a scalable manufacturing form to meet the demands of an ever-growing energy storage market in batteries. This is a novel approach for constructing electrodes and manufacturing batteries. The three-dimensional, porous structures enable several times better energies, larger number of cycles, elimination of the safety problems, and lower cost. The concept is based not on some exotic or mysterious new material, but on the well-known silicon, used in computer chips and driving or controlling practically everything in modern life. For batteries, silicon is used in form of porous wafers – the three-dimensional porous structure that enables improvements in every battery property. We have taken the idea of simultaneously improving all fundamental prosperities of batteries by using a porous conductive substrate in silicon and demonstrated the exceptional performance that is 3 to 6 times that of traditional batteries. The semiconductor industry has been a dominant driving force behind modern technology advancement for the last five decades. If one needs to point to a single reason for this dominance, without a doubt, that would be a permanent evolution in manufacturing and semiconductor industry’s ability to innovate again and again with high volume manufacturing and achieve double win - low cost and improved performance.

What are the challenges that the sector is fronting?

High Capital Cost to Manufacture, Safety, Energy Performance Density, Installation and Integration, Efficiency, Scalability, Flexibility, Cycle Life, but most importantly Cost. Cost is key driver for all storage applications. Low cost batteries will enable 27/7 clean energy for solar.

The complexity of combinations possible between different anodes and cathodes in lithium battery systems makes it difficult to discuss the shortcomings of various batteries in general terms. But, we’ll try to point to main sources of problems that affect the performance or safety of these batteries. First, we define the performance as a totality of the following main battery characteristics*:
1. Energy density: the amount of energy stored per volume or weight.
2. Power density: the ability to deliver current per volume or weight. The ability to accept current is related to charging time.
3. Cycle life: number of cycles that a battery can deliver a useful capacity, typically 80% of the nominal or starting capacity.
4. Safety: the ability to reduce the probability of a catastrophic battery failure with violent outcome such as fire or explosion.
5. Manufacturing: cost, capacity and time to implementation.

XNRGI battery electrode technology is a perfectly scalable platform model. Flexible, Tunable, Low Cost, Safe, High Volume Manufacturing Model. The based unit or size produced is a 200 mm wafer. For applications that require larger power, full wafer electrodes can be assembled into stacks, while for smaller electrodes wafers would be cut (or diced) into any size required.

With every aspect of performance improved, the XNRGI battery concept is easily the most important battery innovation in the recent history of lithium batteries. By merging the battery industry with the silicon processing industry, the technology has the potential to harness numerous performance improvement pathways and provide a battery that will keep improving. The structure of porous silicon is extremely versatile and provides a platform, which can be continuously improved with other innovations from the battery field or semiconductor field. This is not a stagnant or limited concept; on the contrary the possibilities are almost endless towards further improvements.