research roundup

2 Houston research projects unveil revolutionary solar and battery technologies

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.

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Building Houston

 
 

BUCHA BIO has raised over $1 million to grow its team, build a new headquarters, and accelerate its go-to-market strategy. Image courtesy of BUCHA BIO

A Houston company that has created a plant-based material that can replace unsustainable conventional leathers and plastics has announced the close of its oversubscribed seed funding round.

BUCHA BIO announced it's raised $1.1 million in seed funding. The round included participation from existing partners New Climate Ventures, Lifely VC, and Beni VC, as well as from new partners Prithvi VC, Asymmetry VC, and investors from the Glasswall Syndicate, including Alwyn Capital, as well as Chris Zarou, CEO & Founder of Visionary Music Group and manager of multi-platinum Grammy-nominated rapper, Logic, the startup reports in a news release.

“I’m excited to back BUCHA BIO’s amazing early market traction," Zarou says in the release. "Their next-gen bio-based materials are game-changing, and their goals align with my personal vision for a more sustainable future within the entertainment industry and beyond.”

The company, which relocated its headquarters from New York to Houston in February, was founded by Zimri T. Hinshaw in 2020 and is based out of the East End Makers Hub and Greentown Houston.

BUCHA BIO has created two bio-based materials using bacterial nanocellulose and other plant-based components. The two materials are SHORAI, which can be used as a leather alternative, and HIKARI, a translucent material that is expected to be formally introduced in November.

The fresh funding will help the company to accelerate its move into the marketplace next year by securing co-manufacturers to scale production. Additionally, the company is growing its team and is hiring for a new supply chain lead as well as some technician roles.

Per the release, BUCHA BIO is working on constructing a new headquarters in Houston that will house a materials development laboratory, prototype manufacturing line, and offices.

BUCHA BIO has the potential to impact several industries from fashion and automotive to construction and electronics. According to the Material Innovation Initiative, the alternative materials industry has seen an increased level of interest from investors who have dedicated over $2 billion into the sector since 2015.

“The time for rapid growth for biomaterials is now," says repeat investor Eric Rubenstein, founding managing partner at Houston-based New Climate Ventures, in the release. "BUCHA BIO's team and technical development are advancing hand in hand with the demands of brand partnerships, and we are excited to support them as they capitalize on this global opportunity.”

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