Two Houston-area research projects out of local universities have created new, greener technologies. Photo courtesy of Rice University

Research, perhaps now more than ever, is crucial to expanding and growing innovation in Houston — and it's happening across the city right under our noses.

In InnovationMap's latest roundup of research news, two Houston institutions are working on clean energy innovation thanks to new technologies.

Rice University team develops seeds for growing solar energy collectors

Rice engineers discovered a self-assembly method for producing the films from "seeds," submicroscopic pieces of 2D crystals that serve as templates. Photo by Jeff Fitlow/Rice University

Man-made solar panels are continuing to be affixed to rooftops everywhere, but scientists at Rice University have just figured out a way to grow solar energy collectors in a more efficient way than ever before.

3D halide perovskite photovoltaic devices have been developed relatively reliably, but the Rice engineers have created microscopic seeds for growing 2D perovskite crystals that are both stable and highly efficient at harvesting electricity from sunlight, according to a release from Rice.

"We've come up with a method where you can really tailor the properties of the macroscopic films by first tailoring what you put into solution," said study co-author Aditya Mohite, an associate professor of chemical and biomolecular engineering and of materials science and nanoengineering at Rice. "You can arrive at something that is very homogeneous in its size and properties, and that leads to higher efficiency. We got almost state-of-the-art device efficiency for the 2D case of 17%, and that was without optimization. We think we can improve on that in several ways."

The study was published online in Advanced Materials by Mohite and his fellow chemical engineers from Rice's Brown School of Engineering. The seeds can be used to grow homogenous thin films that proved both efficient and reliable, a previously problematic combination for devices made from either 3D or 2D perovskites.

"Homogeneous films are expected to lead to optoelectronic devices with both high efficiency and technologically relevant stability," he says.

The process is more efficient and effective, as well as being cheaper. The Department of Energy's Office of Energy Efficiency and Renewable Energy and the Academic Institute of France and the Office of Naval Research supported the project.

Houston researchers are finding ways to improve EV batteries

Houston researchers are working on a new way to make electric vehicles more commercially viable with enhanced — and cheaper — batteries. Photo via uh.edu

Only a small fraction of vehicles on the road these days are electric — but that's going to change. It's projected that EVs will make up 30 percent of on-road vehicles in 2030. A team of scientists at the University of Houston are focusing on improving EV batteries — a major key in the commercialization of these greener vehicles.

The UH team — Yan Yao, Cullen Professor of electrical and computer engineering at the Cullen College of Engineering at the University of Houston, and UH post doctorate Jibo Zhang — are taking on this challenge with Rice University colleagues — Zhaoyang Chen, Fang Hao, Yanliang Liang of UH, Qing Ai, Tanguy Terlier, Hua Guo and Jun Lou.

In a recently published paper in Joule, the team demonstrated a two-fold improvement in energy density for organic-based, solid state lithium batteries by using a solvent-assisted process to alter the electrode microstructure, according to a news release from UH.

"We are developing low-cost, earth-abundant, cobalt-free organic-based cathode materials for a solid-state battery that will no longer require scarce transition metals found in mines," says Yao in the release. "This research is a step forward in increasing EV battery energy density using this more sustainable alternative."

Yao, who is also Principal Investigator with the Texas Center for Superconductivity at UH, explains that there is increasing concern about the supply chain of lithium-ion batteries in the United States.

"In this work, we show the possibility of building high energy-density lithium batteries by replacing transition metal-based cathodes with organic materials obtained from either an oil refinery or biorefinery, both of which the U.S. has the largest capacity in the world," he goes on to say.

The cost of EV batteries declined to nearly 10 percent of their original cost over the past decade, and innovation and research like this project are only going to make EVs more commercially viable. The research was funded by the US Department of Energy's Office of Energy Efficiency and Renewable Energy as part of the Battery 500 Consortium.

John Berger, CEO of Houston-based Sunnova, is this week's Houston Innovators Podcast guest. Courtesy of Sunnova

Houston solar energy exec shines light on company growth and IPO

HOUSTON INNOVATORS PODCAST EPISODE 15

It was all about the timing for John Berger, founder and CEO of Sunnova, a Houston-based residential solar energy company.

When he founded his company in 2012 in Houston, solar energy wasn't the trendy sustainability option it is today, but Berger saw the potential for technology within the industry. So, with a lot of perseverance and the right team behind him, he scaled Sunnova through nationwide expansion, billions of money raised, and a debut on the stock market last July — something that also happened with great timing.

About 72 hours after Sunnova went public last July, the Federal Reserve System announced it was going to cut rates. Additionally, Sunnova's IPO occurred ahead of WeWork's failed IPO.

"We went public in a market that still isn't back open again, I think, for IPOs," Berger says on this week's episode of the Houston Innovators Podcast. "We had pretty good timing when we went out the door."

However great the timing was, Sunnova's success is built on the hard work and skills of the company's employees, Berger explains on the podcast, and now running a public company requires a dynamic leader.

"I really look at myself and how I can change myself," Berger says. "I'm a different CEO today than I was 12 months ago, and hopefully I'll be a different CEO in 12 months, because the company demands it."

In the episode, Berger lifts the curtain on Sunnova's IPO, explains where he sees the solar energy industry headed, how battery storage technology has evolved, and why he's not worried about who ends up in the White House. Listen to the full episode below — or wherever you get your podcasts — and subscribe for weekly episodes.


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Houston universities climb the ranks on annual list of most patents issued

top 100

The University of Houston and Rice University have claimed spots on the National Academy of Inventor's Top 100 U.S. Universities Granted Utility Patents.

The list is based on data obtained from the U.S. Patent and Trademark Office and ranks U.S. academic institutions that are advancing innovation by the number of utility patents issued in the prior year.

Utility patents are among the world’s most valuable assets because they give inventors exclusive commercial rights to produce and use their technology. The universities ranked on the list collectively hold nearly 6,500 patents.

“In the ever-evolving innovation landscape, it is imperative that the U.S. is remaining competitive and at the forefront of today’s emerging research and technologies,” Paul R. Sanberg, president of the NAI, said in a news release. “Ensuring the security of intellectual property through patenting is a crucial component to this and allows those innovations to be effectively moved to market, where they can create valuable societal and economic impact. The Top 100 U.S. list celebrates U.S. universities and their inventive staff and faculty for their dedication in ensuring their innovations and IP are protected.”

The University of Houston System came in at No. 62 with 34 patents, and Rice University claimed the No. 68 spot with 30 patents.

Both universities climbed up the rankings this year. Last year, UH was ranked No. 63 with 27 patents. Rice climbed an impressive 26 spots this year, after ranking No. 94 with 14 patents issued in 2023.

“Granted U.S. utility patents can tremendously help in commercializing the technologies covered by such patents by attracting industry investment and commercial partners on a global level,” Neha Malik, assistant director for intellectual property management in Rice's Office of Technology Transfer, said in a release. “Advancing in this list memorializes Rice’s commitment to support research programs of Rice faculty by generating a path for the university to bring its research to the marketplace.”

Other Texas universities on the list include:

  • No. 3 University of Texas System (234 patents)
  • No. 35 The Texas A&M System (61 patents)
  • No. 73 Texas Tech University System (25 patents)
  • No. 80 Baylor University (20 patents)

The University of California (540 patents) claimed the No. 1 spot again this year, followed by the Massachusetts Institute of Technology (295 patents), which also placed second for 2024.

First large-scale affordable housing project of 3D-printed homes rises in Houston

Building Blocks

What’s being promoted as the world’s first large-scale affordable housing development built using 3D technology is taking shape in Houston.

Houston-based 3D construction company HiveASMBLD has teamed up with Houston-based Cole Klein Builders and the City of Houston on the Zuri Gardens project. Located near Hobby Airport on Martindale Road, the first 3D-printed home at Zuri Gardens is set to be completed in October.

“Zuri Gardens was born from the frustration of watching hardworking families get priced out of safe, resilient housing. We knew there had to be a better way — and with this project, we’re proving that there is,” says Vanessa Cole, co-founder of Cole Klein Builders.

“By combining visionary design, advanced construction technology, and powerful partnerships, we’re building more than just homes — we’re creating a blueprint for the future of equitable homeownership in Houston and beyond.”

The development is being created for households earning up to 120 percent of the median income in the Houston metro area. For a four-member household in the Houston area, the 120 percent limit in 2025 is $121,300, as set by the U.S. Department of Housing and Urban Development (HUD).

The 13-acre Zuri Gardens development will feature 80 energy-efficient homes averaging 1,360 square feet. Prices will be in the mid to high $200s. The homes will qualify for up to $125,000 in down payment assistance from the City of Houston.

HiveASMBLD will print two different home designs, each with two-bedroom and two-and-a-half bathroom configurations, along with an office/flex space and a covered patio.

Zuri Gardens home model Houston Courtesy rendering

“The community we envision for Zuri Gardens is modern, safe, and one that residents will be proud to call home. When completed using HiveASMBLD’s innovative technology, this 3D-printed multifamily community will exemplify the future of residential affordable living,” says Timothy Lankau, founder and co-CEO of HiveASMBLD.

Developments like Zuri Gardens are popping up around the country.

“3D-printed homes are revolutionizing the construction industry by making home builds faster, cheaper, and more sustainable,” according to The Zebra, an Austin-based insurance marketplace. “In less than 24 hours, 3D printers can print the foundation and walls for a small home at a fraction of the cost of typical construction.”

U.S. News & World Report explains that unlike a traditional home, a 3D-printed home is printed in place, “just like you’d print a knickknack on your home 3D printer. Layer by layer, proprietary concrete blends are used to build the wall systems of the home in any type of design that a builder can imagine.”

Texas is home to several trailblazing 3D-printed projects.

In the U.S., the first 3D-printed home was built in 2018 in Austin, and the first 3D-printed multistory home was completed in 2023 in Harris County’s Spring Branch neighborhood. Meanwhile, the world’s largest neighborhood of 3D-printed homes is located in the Austin suburb of Georgetown.

Grand View Research predicts the global market for 3D-printed construction will approach $4.2 billion by 2030.

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This article originally appeared on CultureMap.com.

Houston tech company secures $450M NASA contract

space deal

NASA’s Johnson Space Center awarded Houston-based aerospace technology and engineering services company Barrios Technology the Mission Technical Integration Contract (MTIC).

The two-year contract is worth $450 million and will begin Oct. 1, 2025.

Barrios will provide technical and management support to some of NASA’s human spaceflight programs, which include the Orion and Gateway programs, the International Space Station (ISS) and possibly more human spaceflight initiatives.

The contract represents a continuation of Barrios’ Human Space Flight Technical Integration Contract (HSFTIC), which has been in effect since 2020.

“We are incredibly proud to have been selected by NASA to continue working side by side with them in shaping the future of human space exploration,” Kelly Page, president of Barrios Technology, said in a news release.

The contract also includes support for program, business, configuration and data management, information technology, systems engineering and integration, mission integration, safety and mission assurance, and operations according to Barrios.

Barrios will be supported by subcontractors ARES Technical Services Corp., Booz Allen Hamilton, Intuitive Machines, Summit Technologies & Solutions, and TechTrans International (TTI).

“This award is a testament to the passion, hard work, and extraordinary value that our Barrios family brings every single day,” Page added in the release. “This is not just another contract award—it is the continuation of a generational commitment to our NASA customers and their critical missions.”