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Building the bridge

Ponte Vecchio Sunset, Florence, Italy

The metaphor that is also a method of crossing a divide, transporting the physical from one state to the next. Once side to the next – across the Arno, over the Hudson, spanning the Seine, connecting Brooklyn to Manhattan.

How many do you recall by name? Some for their beauty, others merely wondrous, the metaphor as well as the physical transference also apply to technology. The way we move improves, the power sources change, because they are forced to; we choose the worst methods first, to soothe our primitive ease, pressure and ideas allow conveyance to get better. Then a Roebling appears. Several Roeblings, a Strauss, and maybe an Eiffel.*

Lithium-ion batteries are the default chemistry used in EVs, personal devices, and even stationary storage systems on the grid today. But in a tough environment in some markets like the US, there’s a growing interest in cheaper alternatives. Automakers right now largely care just about batteries’ cost, regardless of performance improvements, says Kara Rodby, a technical principal at Volta Energy Technologies, a venture capital firm that focuses on energy storage technology.

Sodium-ion cells have long been held up as a potentially less expensive alternative to lithium. The batteries are limited in their energy density, so they deliver a shorter range than lithium-ion. But sodium is also more abundant, so they could be cheaper.

Lithium-ion batteries have crowded out competitors like sodium-ion, but even these represent only the tip of the spear of the battery iceberg. There are a few others, a list that will expand and contract as ultimately the tech chases simpler as price, ease, waste, and availability dictate a new race to the other side.

New battery chemistry already feeds a breeding ground for competitors. The bridge builders are all over, chasing opportunity like the oilmen and the 49ers before them. No one will be accused of excessive optimism at the current moment. However, the fossil fuel-powered economy is living up to its name – a wonder of reverse marketing – done and dusted, as we scatter ourselves across the several states of realizing it. Nothing about it is salvageable. I trust that’s not our calling card.

It’s the meanwhile that deserves attention. The bridge can’t get built while you’re standing on it – and then you notice you’re suspended out over thin air, just as we’ve always been.

* I’m endeared of the story, perhaps apocryphal, that as the Tour rose of Paris in the late 1880s, the artists of the time considered it as sign marking the end of civilization, perhaps the world.

 

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The Green Revolution

No, not that one. This one:

The Green Revolution refers to a transformative 20th-century agricultural project that utilized plant genetics, modern irrigation systems, and chemical fertilizers and pesticides to increase food production and reduce poverty and hunger in developing countries. The Green Revolution began in Mexico, where scientists developed a hybrid wheat variety that dramatically expanded yields. Following its introduction, hunger and malnutrition there dropped significantly.

The model was subsequently extended to Asia, Latin America, and later Africa to increase food production for growing populations without consuming significantly more land. Over time, however, the techniques and policies of the Green Revolution were questioned as they led to inequality and environmental degradation.

Ahem. Such language. But being mindful of these transformations is important, especially as we seem to be on the verge of several others happening simultaneously and at terrific speed. For instance, which kind of battery will follow lithium-ion? In early 2023, we heard about iron-air batteries that use a water-based electrolyte and store energy using reverse rusting. Now, that’s the sexy tech we need. Companies are being funded and manufacturing facilities built. The storage needs changing, not to mention the problematic issues around mining lithium, are driving this ongoing series of shifts. Like the earlier Green revolution, it’s less important to cheer these development as good or bad but rather to see them in a kind of continuum and consider how each new standard performs under these changing market conditions. Yes, market – the economics as well as the social and physical constraints.

Climate tech is on-again, off-again as we get jaded accustomed to shiny new things, seek improvements and various strategies win out. But as the pressure continues to push costs down and use up, the newer green revolution can usher in a more stable form of societal improvements for everyone.

That, we should expect.

Video: the great Arthur Blythe (Thanks D!), with Bob Stewart on Tuba, doncha know.

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Battery Plants

Saw a friend yesterday whose water business took a tumble thanks to the plague shutting down business offices in our small burg. And though that sounds like the plot for another episode of ‘Your Dystopia,’ he said things were looking up, thanks to a new battery plant opening up outside of an even smaller burg a half hour away. Fossil fuels are not ending, but largely over, we agreed. Electric vehicles are very much the present, I may have said, sitting in a late-model guzzler. My water friend went back to his not-so-late model pickup, but the battery plants hung in the air a little longer, walled gardens of Babylon, with added strife and wi-fi.

What if battery plants were literal? Plants are already perfect energy storage dynamos – we just don’t know how they do it. We understand, but it’s still largely alchemical to us. I looked it up:

Imagine if farmers could grow batteries in their fields. Researchers are taking steps towards at least partially making that green dream a reality by using plant materials to make key components of energy storage devices. Pen-Chi Chiang and colleagues at the National Taiwan University review developments in this adventurous ambition in the journal Materials Today Energy.

“We consider the state-of-the-art challenges and issues for using plant-derived biomass materials for various energy storage applications, such as batteries and supercapacitors,” says Chiang.

Energy storage is an essential requirement for modern life. Without it, we couldn’t have cellphones, laptops, or electric vehicles. From consumer electronics to transportation, electrical energy must be stored and be available at the flick of a switch. Current systems, such as the lithium-ion batteries common in many devices, are made from limited resources, and bring environmental problems associated with their disposal.

Chiang points out that a sustainable future will increasingly depend on replacing existing technologies with those using renewable materials that can readily be recycled without damaging the environment.

One of the most promising approaches towards sustainable energy storage devices is to convert plant biomass into a material called “porous carbon”. This is a form of carbon that can be fabricated into three-dimensional ordered “nanostructures” with a variety of useful electrochemical properties.

I guess nanostructures are going to be our best tickets to being able to produce the capacities of plant lignin. It’s the inverse of why biomass is so hard to breakdown, in efforts tap its energy by making fuel. Seems a folly when you think about it like that. Instead of making fuel, figure how they work as batteries – which we seem to already grasp.

As is so often the case, a matter of which word we emphasize. Thinking big does not have to only mean going to Mars. Maybe if ‘Native American’ were two of the words represented by NASA, we might have already figured this out, not to mention a few other things.