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.

The grants will fund a total of 25 projects in 14 states, including Texas. Photo via Getty Images

US awards $3B for EV battery production in Texas, other states

charging up

The Biden administration is awarding over $3 billion to U.S. companies to boost domestic production of advanced batteries and other materials used for electric vehicles, part of a continuing push to reduce China’s global dominance in battery production for EVs and other electronics.

The grants will fund a total of 25 projects in 14 states, including Texas, as well as Ohio, South Carolina, Michigan, North Carolina, and Louisiana.

The grants announced Friday mark the second round of EV battery funding under the bipartisan infrastructure law approved in 2021. An earlier round allocated $1.8 billion for 14 projects that are ongoing. The totals are down from amounts officials announced in October 2022 and reflect a number of projects that were withdrawn or rejected by U.S. officials during sometimes lengthy negotiations.

The money is part of a larger effort by President Joe Biden and Vice President Kamala Harris to boost production and sales of electric vehicles as a key element of their strategy to slow climate change and build up U.S. manufacturing. Companies receiving awards process lithium, graphite or other battery materials, or manufacture components used in EV batteries.

“Today’s awards move us closer to achieving the administration’s goal of building an end-to-end supply chain for batteries and critical minerals here in America, from mining to processing to manufacturing and recycling, which is vital to reduce China’s dominance of this critical sector,'' White House economic adviser Lael Brainard said.

The Biden-Harris administration is "committed to making batteries in the United States that are going to be vital for powering our grid, our homes and businesses and America’s iconic auto industry,'' Brainard told reporters Thursday during a White House call.

The awards announced Friday bring to nearly $35 billion total U.S. investments to bolster domestic critical minerals and battery supply chains, Brainard said, citing projects from major lithium mines in Nevada and North Carolina to battery factories in Michigan and Ohio to production of rare earth elements and magnets in California and Texas.

“We’re using every tool at our disposal, from grants and loans to allocated tax credits,'' she said, adding that the administration's approach has leveraged more $100 billion in private sector investment since Biden took office.

In recent years, China has cornered the market for processing and refining key minerals such as lithium, rare earth elements and gallium, and also has dominated battery production, leaving the U.S. and its allies and partners "vulnerable,'' Brainard said.

The U.S. has responded by taking what she called “tough, targeted measures to enforce against unfair actions by China.” Just last week, officials finalized higher tariffs on Chinese imports of critical minerals such as graphite used in EV and grid-storage batteries. The administration also has acted under the 2022 climate law to incentivize domestic sourcing for EVs sold in the U.S. and placed restrictions on products from China and other adversaries labeled by the U.S. as foreign entities of concern.

"We're committed to making batteries in the United States of America,'' Energy Secretary Jennifer Granholm said.

If finalized, awards announced Friday will support 25 projects with 8,000 construction jobs and over 4,000 permanent jobs, officials said. Companies will be required to match grants on a 50-50 basis, with a minimum $50 million investment, the Energy Department said.

While federal funding may not be make-or-break for some projects, the infusion of cash from the infrastructure and climate laws has dramatically transformed the U.S. battery manufacturing sector in the past few years, said Matthew McDowell, associate professor of engineering at Georgia Institute of Technology.

McDowell said he is excited about the next generation of batteries for clean energy storage, including solid state batteries, which could potentially hold more energy than lithium ion.

The off-take agreement will provide SK On with ExxonMobil's lithium produced in Arkansas. Photo via exxonmobil.com

ExxonMobil enters into off-take agreement with EV battery manufacturer

it's a deal

ExxonMobil has signed a non-binding memorandum of understanding with South Korean electric vehicle battery developer SK On.

The deal aims to secure a multiyear off-take agreement of up to 100,000 metric tons of MobilTM Lithium from the company’s first planned project in Arkansas. SK On will use the lithium in its EV battery manufacturing operations in the United States, which will contribute to ExxonMobil’s 2023 goal of supplying lithium for nearly 1 million EV batteries annually by 2030, and also assist in the build out of a U.S. EV supply chain.

The Arkansas project proposes an extraction of lithium from underground saltwater deposits and converting it into battery-grade material onsite. The approach will produce lithium more efficiently and with fewer environmental impacts than traditional hard rock mining, according to ExxonMobil. Consumer electronics, energy storage systems, and other clean energy technologies have all shown increased use in lithium needs.

The planned production of MobilTM Lithium will use ExxonMobil's core capabilities in drilling, subsurface exploration, and chemical processing, which should offer U.S. EV battery manufacturers a lower-carbon lithium supply option.

“The world needs more lithium to support its emissions goals, and we're doing our part to drive solutions forward in the United States,” Dan Ammann, president of ExxonMobil Low Carbon Solutions, says in a news release. “This collaboration with SK On demonstrates the leading role we play in the growing market for domestically sourced lithium, a market that’s advancing energy security and climate objectives, as well as supporting American manufacturing."

The annual production capacity of SK On in the U.S. alone is expected to reach more than 180 GWh in 2025. That production is enough to power around 1.7 million EVs per year.

“Through this partnership with ExxonMobil, we will continue strengthening battery supply chains in the U.S.,” Park Jong-jin, executive vice president of Strategic Procurement at SK On, adds.

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Houston maritime startup raises $43M to electrify cargo vessels

A Houston-based maritime technology company that is working to reduce emissions in the cargo and shipping industry has raised VC funding and opened a new Houston headquarters.

Fleetzero announced that it closed a $43 million Series A financing round this month led by Obvious Ventures with participation from Maersk Growth, Breakthrough Energy Ventures, 8090 Industries, Y Combinator, Shorewind, Benson Capital and others. The funding will go toward expanding manufacturing of its Leviathan hybrid and electric marine propulsion system, according to a news release.

The technology is optimized for high-energy and zero-emission operation of large vessels. It uses EV technology but is built for maritime environments and can be used on new or existing ships with hybrid or all-electric functions, according to Fleetzero's website. The propulsion system was retrofitted and tested on Fleetzero’s test ship, the Pacific Joule, and has been deployed globally on commercial vessels.

Fleetzero is also developing unmanned cargo vessel technology.

"Fleetzero is making robotic ships a reality today. The team is moving us from dirty, dangerous, and expensive to clean, safe, and cost-effective. It's like watching the future today," Andrew Beebe, managing director at Obvious Ventures, said in the news release. "We backed the team because they are mariners and engineers, know the industry deeply, and are scaling with real ships and customers, not just renderings."

Fleetzero also announced that it has opened a new manufacturing and research and development facility, which will serve as the company's new headquarters. The facility features a marine robotics and autonomy lab, a marine propulsion R&D center and a production line with a capacity of 300 megawatt-hours per year. The company reports that it plans to increase production to three gigawatt-hours per year over the next five years.

"Houston has the people who know how to build and operate big hardware–ships, rigs, refineries and power systems," Mike Carter, co-founder and COO of Fleetzero, added in the release. "We're pairing that industrial DNA with modern batteries, autonomy, and software to bring back shipbuilding to the U.S."

Shell partners with UK-based co. for hydrogen electrolyzer pilot

ultra-efficient electrolyzer

Shell Global Solutions International, a subsidiary of Shell, which maintains its U.S. headquarters in Houston, has signed a collaboration agreement with London-based Supercritical Solutions to advance Supercritical’s ultra-efficient hydrogen electrolyzer technology toward a field pilot demonstration.

In the deal, the companies will collaborate on a paid technology feasibility study that will support the evaluation and planning of the pilot demonstration, according to a news release. Supercritical Solutions’ technology aims to deliver high-efficiency renewable hydrogen at a lower cost for the industrial hydrogen market.

"Signing this collaboration agreement with Shell is a major milestone for Supercritical Solutions and an important step on our commercialisation journey,” Luke Tan, co-founder of Supercritical, said in the news release. “We are directly addressing the cost and complexity barriers facing the renewable hydrogen market. We are excited to move forward with a company like Shell, whose global leadership has been proven to accelerate innovative technologies to market.”

Supercritical’s hydrogen electrolyser technology can operate at high temperatures and pressures of up to 220 bar without the need for an external hydrogen compressor, rare-earth materials or easily degradable membranes. The technology removes the typical compression step in the process while delivering hydrogen at industry standards. It requires significantly less energy than many traditional electrolyzers and is more cost-efficient.

This recent investment builds on an ongoing relationship between Shell and Supercritical. Supercritical was founded in 2020 and was runner-up in Shell’s New Energy Challenge, which helps startups and scaleups develop sustainable technologies, in 2021. Shell Ventures then invested in Supercritical’s Series A funding round in 2024 with Toyota Ventures.

3 Houston-area companies named to Global Cleantech 100

Energized

Three Houston-area companies—Amperon, Hertha Metals and Vaulted Deep—appear on this year’s Global Cleantech 100 list.

The unranked list, generated by market intelligence and advisory firm Cleantech Group, identifies the 100 privately held companies around the world that are most likely to make a significant impact in the cleantech market over the next five to 10 years.

For the 2026 list, Cleantech Group received more than 24,000 Global Cleantech 100 nominations from nearly 60 countries. Cleantech Group scored those companies and narrowed the contenders to 264. An expert panel reviewed those nominees, and the list was whittled down to the 100 winners.

Here’s a rundown of the three Houston-area honorees:

Amperon

Founded in 2018 by Sean Kelly and Abe Stanway, Houston-based Amperon offers an AI-enabled energy forecasting and analytics platform designed to help stabilize electric grids. Amperon received undisclosed amounts of venture capital from National Grid Partners and Tokyo Gas Co. Ltd. last year and announced a recent investment from Samsung Ventures earlier this month.

Hertha Metals

Founded in 2022 by Laureen Meroueh, Conroe-based Hertha Metals provides a single-step process for producing sustainable steel. Last year, the company emerged from stealth mode and raised more than $17 million in venture capital.

Vaulted Deep

Vaulted Deep’s technology injects excess organic waste underground to remove carbon dioxide from the atmosphere. Julia Reichelstein and Omar Abou-Sayed founded the Houston-based company in 2023. Last year, the startup raised $32.3 million in venture capital. Also in 2025, Vaulted Deep signed a 12-year deal with software giant Microsoft to remove up to 4.9 million metric tons of carbon dioxide from the environment.

Vaulted Deep also made the list last year, along with Houston-based Syzygy Plasmonics and Fervo Energy. Fervo was also named the 2025 North American Company of the Year by Cleantech Group.