rolling out

Texas ride-hailing app grows Houston fleet with EV additions

The first Alto EVs have hit the road in Houston. Photo via Alto

Your next Alto ride might be electric. The Dallas-based car service has rolled out electric vehicles in Houston.

Alto, founded in Dallas in 2018 and launched in Houston in 2020, elevates ridesharing with its own fleet of company-owned, clearly branded SUVs driven by its staff of drivers. The company previously announced its plans to evolve its fleet into being completely electric, and the first EVs have hit the road, according to a company email.

"Our EV additions to the Houston fleet mark an important moment in our commitment to significantly reduce Alto's environmental impact," reads the email sent on September 5.

The new cars offer similar features to its existing fleet, including legroom, phone chargers, water bottles for riders, and more. Plus, the new cars — Kia EV9 — boast a quieter ride.

Alto has consistently grown in its Texas markets — which include Houston and Dallas — over the years, including expanding into Houston's suburbs.

Will Coleman, CEO of Alto, previously wrote in a guest column for InnovationMap that his priorities for starting the company included safety — but also sustainability. For years, Alto has been expressing interest in introducing EVs, with plans of having a completely electric fleet.

"This EV vision is one example of how a rideshare company can build a better and more accountable industry, and these steps also give Houstonians a more responsible and sustainable transportation solution," Coleman writes.

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A View From HETI

Houston researchers have uncovered why solid-state batteries break down and what could be done to slow the process. Photo via Getty Images.

A team of researchers from the University of Houston, Rice University and Brown University has uncovered new findings that could extend battery life and potentially change the electric vehicle landscape.

The team, led by Yan Yao, the Hugh Roy and Lillie Cranz Cullen Distinguished Professor of Electrical and Computer Engineering at UH, recently published its findings in the journal Nature Communications.

The work deployed a powerful, high-resolution imaging technique known as operando scanning electron microscopy to better understand why solid-state batteries break down and what could be done to slow the process.

“This research solves a long-standing mystery about why solid-state batteries sometimes fail,” Yao, corresponding author of the study, said in a news release. “This discovery allows solid-state batteries to operate under lower pressure, which can reduce the need for bulky external casing and improve overall safety.”

A solid-state battery replaces liquid electrolytes found in conventional lithium-ion cells with a solid separator, according to Car and Driver. They also boast faster recharging capabilities, better safety and higher energy density.

However, when it comes to EVs, solid-state batteries are not ideal since they require high external stack pressure to stay intact while operating.

Yao’s team learned that tiny empty spaces, or voids, form within the solid-state batteries and merge into a large gap, which causes them to fail. The team found that adding small amounts of alloying elements, like magnesium, can help close the voids and help the battery continue to function. The team captured it in real-time with high-resolution videos that showed what happens inside a battery while it’s working under a scanning electron microscope.

“By carefully adjusting the battery’s chemistry, we can significantly lower the pressure needed to keep it stable,” Lihong Zhao, the first author of this work, a former postdoctoral researcher in Yao’s lab and now an assistant professor of electrical and computer engineering at UH, said in the release. “This breakthrough brings solid-state batteries much closer to being ready for real-world EV applications.”

The team says it plans to build on the alloy concept and explore other metals that could improve battery performance in the future.

“It’s about making future energy storage more reliable for everyone,” Zhao added.

The research was supported by the U.S. Department of Energy’s Battery 500 Consortium under the Vehicle Technologies Program. Other contributors were Min Feng from Brown; Chaoshan Wu, Liqun Guo, Zhaoyang Chen, Samprash Risal and Zheng Fan from UH; and Qing Ai and Jun Lou from Rice.

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