Houston scientists discover breakthrough process for lithium-ion battery recycling

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The Rice team's process is up to 10 times more effective than existing lithium-ion battery recycling. Photo by Gustavo Raskosky/Rice University

With the rise of electric vehicles, every ounce of lithium in lithium-ion batteries is precious. A team of scientists from Rice University has figured out a way to retrieve as much as 50 percent of the material in used battery cathodes in as little as 30 seconds.

Researchers at Rice University’s Nanomaterials Laboratory led by Department of Materials Science and NanoEngineering Chair Pulickel Ajayan released the findings a new study published in Advanced Functional Materials. Their work shows that the process overcomes a “bottleneck” in lithium-ion battery recycling technology. The researchers described a “rapid, efficient and environmentally friendly method for selective lithium recovery using microwave radiation and a readily biodegradable solvent,” according to a news release.

Past recycling methods have involved harsh acids, and alternative eco-friendly solvents like deep eutectic solvents (DESs) at times have not been as efficient and economically viable. Current recycling methods recover less than 5 percent of lithium, which is due to contamination and loss during the process.

In order to leach other metals like cobalt or nickel, both the choline chloride and the ethylene glycol have to be involved in the process, according to the researchers at Rice. The researchers submerged the battery waste material in the solvent and blasted it with microwave radiation since they knew that of the two substances only choline chloride is good at absorbing microwaves.

Microwave-assisted heating can achieve similar efficiencies like traditional oil bath heating almost 100 times faster. Using the microwave-based process, Rice found that it took 15 minutes to leach 87 percent of the lithium, which differs from the 12 hours needed to obtain the same recovery rate via oil bath heating.

“This method not only enhances the recovery rate but also minimizes environmental impact, which makes it a promising step toward deploying DES-based recycling systems at scale for selective metal recovery,” Ajayan says in the release.

Due to rise in EV production, the lithium-ion battery global market is expected to grow by over 23 percent in the next eight years, and was previously valued at over $65 billion in 2023.

“We’ve seen a colossal growth in LIB use in recent years, which inevitably raises concerns as to the availability of critical metals like lithium, cobalt and nickel that are used in the cathodes,” the study's co-author, Sohini Bhattacharyya, adds. “It’s therefore really important to recycle spent LIBs to recover these metals.”

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Uniquely Houston event to convene innovation experts across aerospace, energy, and medicine

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Every year, Houston's legacy industries — energy, medicine, and aerospace — come together to share innovative ideas and collaborate on future opportunities.

For the eighteenth year in a row, the annual Pumps & Pipes event will showcase and explore convergence innovation and common technology themes across Houston’s three major industries. The hosting organization, also called Pumps & Pipes, was established in 2007 in Houston and is dedicated to fostering collaboration amongst the city's three major industries.

With NASA in its backyard, the world’s largest medical center, and a reputation as the “Energy Capital of the World,” Houston is uniquely positioned to lead in cross-industry convergence innovation and is reflected in the theme of this year’s event – Blueprint Houston: Converge and Innovate.

Here's what you can expect to explore at the event, which will take place this year on December 9 at TMC Helix Park. Tickets are available online.

The state of Texas’ aerospace investments

How are the recent strategic investments in aerospace by the State of Texas transforming the space economy and driving growth in adjacent industries? What is the case for cultivating a more dynamic and vibrant aerospace R&D environment?

These are the key questions explored in the opening session of Pumps & Pipes, moderated by David Alexander (Director, Rice Space Institute). Joining the discussion are distinguished leaders Norman Garza, Jr., Executive Director of the Texas Space Commission (TSC); as well as two members of the TSC board of directors: Sarah “Sassie” Duggelby, CEO/Co-Founder of Venus Aerospace; and Kathryn Lueders, GM at Starbase, SpaceX.

This panel will spotlight Texas’ critical role in shaping the future of aerospace, with a focus on its cross-sector impact, from space exploration to innovation in energy and health care. We’ll explore how the state’s investments are fueling research and development, creating economic opportunities, and fostering a more interconnected, high-tech ecosystem for the future.

Real-world applications of robotics and synthetic biology

Explore the groundbreaking intersection of syntheticbiology and robotics as they reshape industries from aerospace to energy to health care. Experts from academia and industry — Rob Ambrose of Texas A&M University, Shankar Nadarajah of ExxonMobil, Shalini Yadav of the Rice Synthetic Biology Institute, and Moji Karimi of Cemvita — will discuss the real-world applications and future possibilities of these two fields, including innovative uses of robotics and drones to monitor emissions from deep-sea oil rigs, and synthetic microbes that convert carbon dioxide into valuable chemical products.

Discover how synthetic biology and robotics are paving the way for a more sustainable, autonomous, efficient, and interconnected future.

The total artificial heart – a uniquely Houston story

Heart failure affects millions globally, yet only a small fraction of patients receive life-saving heart transplants. The Total Artificial Heart (TAH), developed by BiVACOR, offers a revolutionary solution for patients with severe heart failure who are ineligible for a transplant.

Luminary leader, Dr. Billy Cohn, will discuss the groundbreaking BiVACOR TAH, a device that fully replaces the function of the heart using a magnetically levitated rotary pump. This innovative approach is part of an FDA-approved first-in-human study, aiming to evaluate its use as a bridge-to-transplant for patients awaiting heart transplants.

Moderated by Dr. Alan Lumsden (Chair Dept. of CV Surgery at Houston Methodist Hospital), join Dr. Cohn as he shares insights, and the story-behind, this pioneering technology and its potential to reshape the future of heart failure treatment, offering new hope to thousands of patients in need.

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Stuart Corr is the director of innovation engineering at The Bookout Center at Houston Methodist and executive director of Pumps & Pipes.

This article originally ran on InnovationMap.

Houston energy SPAC goes public through IPO

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Houston-based CO2 Energy Transition Corp. — a “blank check” company initially targeting the carbon capture, utilization, and storage (CCUS) sector — closed November 22 on its IPO, selling 6 million units at $10 apiece.

“Blank check” companies are formally known as special purpose acquisition companies (SPACs). A SPAC aims to complete a merger, acquisition, share exchange, share purchase, reorganization or similar business combination in certain business sectors. CO2 Energy Transition will target companies valued at $150 million to $250 million.

Each CO2 Energy Transition unit consists of one share of common stock, one warrant to purchase one share of common stock at a per-share price of $11.50, and the right to receive one-eighth of a share of common stock based on certain business conditions being met.

The IPO also included the full exercise of the underwriter’s option to buy 900,000 units to cover over-allotments. Kingswood Capital Partners LLC was the sole underwriter.

Gross proceeds from the IPO totaled $69 million. The money will enable the company to pursue CCUS opportunities.

“Recent bipartisan support for carbon capture legislation heavily emphasized the government’s willingness to advance and support technologies for carbon capture, utilization, storage, and other purposes as efforts to reduce greenhouse gas emissions [continue],” Co2 Energy Transition says in an October 2024 filing with the U.S. Securities and Exchange Commission (SEC).

Brady Rogers is president and CEO of CO2 Energy Transition. He also is CEO of Carbon Capture Development Co., a Los Angeles-based developer of direct air capture (DAC) technology, and president of Houston-based Antelope Energy Partners LLC, a provider of oil and gas services.

Houston group secures contract for major clean ammonia project in Louisiana

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Houston-headquartered McDermott has received a new contract on a Louisiana clean ammonia project.

Clean energy development company Clean Hydrogen Works tapped McDermott for the front-end engineering and design contract for the Ascension Clean Energy Project. ACE — located in Ascension Parish, Louisiana — is jointly developed by CHW with strategic shareholders ExxonMobil, Mitsui O.S.K. Lines, and Hafnia and is expected to initially produce 2.4 million metric tons per annum of clean ammonia and expand to total 7.2 million metric tons per annum production down the road.

“We are thrilled to partner with McDermott, a company renowned for its extensive experience in mega module construction, demonstrated by a remarkable track record of on-time, on-budget execution of major energy and chemicals projects," Johnny Cook, CHW senior vice president of engineering, procurement, and construction, says in a news release. "This collaboration further strengthens key competitive advantages of our project, including being a mega module capable site with ready infrastructure access to gas, shipping and CCS, an unmatched shareholder base with expertise in CCS and maritime transport, and an experienced team with demonstrated success in executing mega module projects.”

The project has carbon capture and sequestration contracts with ExxonMobil and expects regulatory approvals by early 2025. ACE is expected to reach its final investment decision by late 2025 and start production in 2029. McDermott’s Houston office will lead the project with support from its Gurugram, India, office.

“This FEED award is testament to McDermott’s industry-leading mega-module delivery and installation expertise, and the breadth of our capabilities across the energy transition,” Rob Shaul, McDermott’s senior vice president of Low Carbon Solutions, adds. “Our integrated delivery model, with self-perform construction capabilities and portfolio of McDermott-owned, globally diversified, module fabrication yards means we can offer CHW a repeatable modular implementation solution that is expected to maximize value, reduce risk and provide quality assurance.”

Earlier this year, Houston-based Element Fuels completed the pre-construction phase of its hydrogen-powered clean fuels refinery and combined-cycle power plant in the Port of Brownsville — a project that McDermott is also providing FEED services for.

Also recently, McDermott secured an agreement to work on Canada's first commercial green hydrogen and ammonia production facility.

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