Imagine a world where electric vehicles and smartphones charge in mere minutes rather than hours. This vision is being propelled forward by an accomplished Vietnamese scientist at Stanford University, Linh Le, who is making groundbreaking strides in battery research alongside the U.S. Department of Energy.
At just 29 years old, Linh has already made a significant mark in the scientific community, recently earning the prestigious L’Oréal–UNESCO For Women in Science Award in November 2025. This award celebrates exceptional women researchers who contribute immensely to science, highlighting Linh's remarkable achievements in her field.
Linh's pioneering work centers around lithium-sulfur (Li-S) batteries—an innovative energy storage solution that promises to revolutionize technology. Her research encompasses various battery formats, including coin and pouch cells, with the primary focus on enhancing durability, safety, and charging speed. This advancement is crucial for the future of energy storage systems.
Interestingly, Linh's journey into chemistry began unexpectedly. Despite struggling with the subject during high school, she remarkably scored an impressive 9.8 out of 10 on her university entrance exam in 2014. She had the choice between two prominent universities: the University of Medicine and Pharmacy and Vietnam National University in Ho Chi Minh City’s University of Science. Ultimately, she opted for the latter, recognizing how chemistry plays a vital role in our daily lives and choosing to pursue an honors program.
In her third year, she dove deeper into the realm of physical chemistry and began working in a professor's battery lab. This hands-on experience laid the groundwork for her undergraduate thesis focused on battery electrolytes. Eager for more advanced research opportunities, Linh secured an internship at Professor Shigeto Okada’s lab at Kyushu University in Japan, where she published three papers that subsequently helped her land a PhD scholarship at Pennsylvania State University in the U.S. in 2020.
While at Penn State, Linh was directly involved in projects with the U.S. Department of Energy, concentrating on practical applications of energy storage for electric vehicles and consumer electronics like smartphones. Her internships at EC Power and the Pacific Northwest National Laboratory provided her with invaluable insights into how laboratory research transitions to real-world industry applications.
Despite her impressive background, Linh faced challenges adjusting to life in a foreign country. It took over a year to acclimate to the new environment, as she navigated language barriers, cultural differences, and lifestyle adjustments. The pressure to maintain high data quality and meet research deadlines added to her stress, leading to sleepless nights when only one of twenty tested samples met the required standards. "The relentless deadlines and the need for accuracy often left me with little time to eat or sleep," she recalls.
To manage the pressures of her demanding schedule, Linh learned the importance of taking breaks and discussing obstacles with her colleagues, fostering collaboration to uncover new solutions. She credits her determination to succeed in the U.S. and the unwavering support from her family, friends, and peers as her driving forces.
Having become a key contributor to several high-security projects at her lab, Linh frequently juggles multiple assignments that require strict adherence to protocols, including detailed personal background checks from the age of 18 and regulations around communication and equipment usage.
Last year, she successfully defended her PhD dissertation, focusing on electrolytes and protective layers for fast-charging, high-capacity lithium-metal batteries designed to minimize energy loss and degradation. Throughout this period, she also collaborated with Stanley Whittingham, a Nobel Prize winner in Chemistry from 2019, an experience she considers incredibly fortuitous.
Her award-winning research on Li-S batteries highlights their potential to surpass traditional lithium-ion batteries in energy density, cost-effectiveness, and the availability of materials. As these conventional batteries become harder to source, Li-S technology could lead to the creation of lighter, longer-lasting devices, including smartphones and compact electronics.
However, significant technical challenges remain in developing Li-S batteries, such as improving anode durability and addressing the "polysulfide shuttle" effect that can lead to capacity losses over repeated charging cycles. After wrapping up her Li-S project, Linh has shifted her focus to sodium-ion batteries, which offer a more affordable option and are seen as a viable solution for large-scale energy storage. This field is still emerging, with limited standardization in electrolytes and electrode systems, requiring her to construct much of the research framework independently.
Looking ahead, Linh believes that battery technology will play a critical role in the coming decades as nations ramp up efforts to transition to electric vehicles, creating a growing demand for both research advancements and skilled professionals in the sector. Reflecting on her journey, she emphasizes the importance of having a solid foundational knowledge base and cultivating logical thinking skills.
She encourages students to seek out support in international settings and to build professional networks to adapt more effectively. "Always keep learning, be open to feedback, and be willing to change. In science, it’s vital not to rely solely on your own abilities." How do you view the future of battery technology? What innovations do you think will emerge next? Share your thoughts in the comments!
