Automotive EV-HUB

Abstract: 

This discussion will examine the evolving landscape of sustainable mobility, focusing on Range-Extended Electric Vehicles (REEVs), hydrogen fuel cells, and renewable energy integration. It will also explore the role of electric drive systems in both road and aerial transport, and the challenges and opportunities shaping next-generation transportation technologies.

1. Many discussions around green mobility focus heavily on lithium-ion batteries. From your perspective, what are the biggest limitations of a battery-centric approach to sustainable transportation?

Li-ion has two main versions, LFP and NCM. In EV battery design, NMC (Nickel Manganese Cobalt) batteries offer higher energy density, meaning more power per weight, making them ideal for performance-focused applications like premium electric vehicles and consumer electronics where space is limited. LFP (Lithium Iron Phosphate) batteries, by contrast, provide superior safety, longer cycle life, and greater thermal stability, making them a preferred choice for energy storage systems, electric buses, and home applications where safety and longevity are crucial. The key trade-off is that LFP batteries have lower energy density and a lower cell voltage than NMC batteries. Most of the lower-cost EVs, mainly from China, use LFP in their battery packs. In both these chemistries, Lithium rare earth material is the main component, and the availability of this material is limited and controlled by a few countries, namely Australia, Chile, China, and Argentina. This creates a bottleneck in supply when the EV population grows, and older batteries need recycling and being disposal, which is not environmentally feasible. There must be new technologies for energy storage of EVs.

2. How do you foresee the balance between battery-electric vehicles (BEVs), range-extended electric vehicles (REEVs), and hydrogen fuel cell vehicles evolving over the next decade?

EVs are gaining more range due to better battery packaging, better cooling, and BMS programming, as well as more efficient voltage systems such as 800 and 950VDC. That is why REEVs did not gain a prominent place; however, Chinese OEMs, as well as Europeans, are working on REEV platforms to eliminate range anxiety. There are several REX engines available, from small 30KW to 100KW that can even support 800V platforms, meaning they can charge a battery faster. For passenger cars, both EV and REEV are ideal. Fuel cells are mainly used to replace Diesel engines. They provide long range, and an FC vehicle can be refilled in seconds compared to several minutes or hours to charge EVs. But H2 is expensive to produce and store. Also, EV chargers are far cheaper to set up than very expensive H2 stations. I propose the FC platform to be for commercial vehicles such as Trucks and Buses only for now, and later, for Aerospace.

3. In terms of policy and regulatory frameworks, what critical shifts are needed to accelerate the adoption of non-battery alternatives in mobility?

Provide more freedom to study the new technologies, give more grants and platforms to start-ups, Universities, and OEMs to conduct their studies, and don’t let politics enter this work. Only specialists and knowledgeable people should work on this and not cronies. 

4. What role do you think REEVs will play as a transitional technology between traditional internal combustion engines and fully electrified or hydrogen-based systems?

Not significant as when Solid State batteries that can be charged in a few minutes and fully commercialized and prices are stabilized, there would be no need for REX unless it's optional and only for vehicles that need long-distance driving, like Taxis and marine. Internal Combustion engines are making a return, and I believe by 2050, they will start phasing out, only when battery and EV tech are fully mature. As for Hydrogen, the cost is high and we need to see how it develops in the Future and FC efficiency to be as high as the EV package. 

5. What innovations in electric drive systems and energy management are key to making REEVs a competitive option in the green mobility landscape?

To manage to work on 800VDC vehicles, be more fuel efficient, less noise, and smaller in packaging, and use more efficient technology and design. Multifuel system (Gasoline, Methanol).

6. Hydrogen fuel cells are often considered the most promising alternative to batteries. What breakthroughs in hydrogen production, storage, and distribution do you believe are critical for mass adoption?

We discussed it in previous topics. H2 is very promising, but I believe mainly for commercial vehicles, power generation, Aerospace, and mass transport due to higher cost and larger storage tanks needed. They are EVs, but power is from FC, which is more complicated to package. Also, refill stations are very costly. 

7. How realistic is the integration of hydrogen fuel cells in heavy-duty road transport versus aerial mobility?

It’s realistic for Commercial vehicles only for now. For passenger cars, I don’t see it as a real contender.

8. Could you elaborate on the synergies between renewable energy generation (like solar, wind) and hydrogen production through electrolysis for sustainable mobility ecosystems?

For Wind and Solar, both are practical and cheaper, but Hydrogen can produce more power, and they are far smaller in footprint for ESS systems for power generation. They all have the target of producing green and clean energy. Wind turbines are more expensive to set up than H2 and Solar ESS.

9. What do you see as the role of green hydrogen in balancing intermittent renewable energy supply with transportation demand?

I can see that if it’s used for commercial vehicles and energy generation to replace Diesel, it would work.

10. Electrification of aerial mobility (eVTOLs, drones, and hybrid aircraft) faces different engineering challenges compared to road transport. What are the main technological barriers?

Make them more efficient and provide more range to reduce range anxiety. REEV platforms are being studied for smaller E-planes. For eVTOLs, there are both Electric and engine-powered versions. For drones, a few companies in the US have special semi-solid cells that provide long flying time and fast charging for the drones mainly used for Military. It is a technology that exists and will mature upon the introduction of full Solid-state cells by 2030.

11. How can learnings from electric road transport accelerate innovation in aerial mobility, and vice versa?

It is all related. Can compare battery systems from 10 years ago to now. They are worlds apart. Electric Motors are running on the same principle as 100 years ago, but better design and packaging make them far better, superior, and powerful. The process is the same as with all other industries.

12. What are the key infrastructure challenges (charging networks, hydrogen refuelling stations, grid integration) that must be addressed to enable scalable adoption of next-generation mobility?

Hydrogen is expensive to produce. Storage is very much a specialized plan, and refill machines are very high cost, which is why I believe they are good for large Commercial operations rather than passenger cars. Also, the limited availability of refill stations is a problem, as charging stations are rather easy to set up and there are many suppliers globally, whereas H2 refill machines are supplied by a few specialized companies. 

13. How do you assess the total lifecycle sustainability of REEVs and hydrogen fuel cell vehicles compared to conventional EVs?

They are all relevant for now until full high-energy fast-charge solid cells are fully commercialized and become the norm.

14. Looking 20 years ahead, do you envision a convergence of multiple technologies (batteries, hydrogen, hybrid electric drives), or do you think one dominant model will emerge?

I see EVs as the main model with the use of solid-state cells and Hydrogen platforms for commercial and Aerospace.