From powering electric vehicles to storing renewable energy, devices like fuel cells, metal–air batteries, and electrolyzers are cornerstones of a decarbonized future. Yet, the reactions that power these systems often suffer from sluggish kinetics and energy loss, especially when multiple electron transfers are involved. One quantum property—electron spin—has remained largely overlooked in catalyst design despite its fundamental role in determining how atoms bond and react. As scientific understanding deepens, it's becoming clear that manipulating spin states on catalyst surfaces could unlock faster, more selective reactions. Due to these challenges, there is an urgent need to explore how spin-state control can be purposefully leveraged to enhance catalytic performance.
In a review (DOI: 10.1016/j.esci.2024.100264) published on January, 2025, in eScience, Liu Lin and an international team led by Beijing Normal University map out the emerging field of spin-regulated electrocatalysis. The article synthesizes recent breakthroughs on how spin states affect catalytic processes in key reactions—oxygen reduction (ORR), oxygen evolution (OER), carbon dioxide reduction (CO₂RR), and nitrogen reduction (NRR). By detailing six major spin regulation strategies—ranging from crystal structure tuning to applying magnetic fields—the review provides a comprehensive framework for designing catalysts that operate with greater precision and efficiency.
Long a textbook concept in quantum physics, electron spin is now stepping into the spotlight of catalyst science. The review explains how manipulating spin configurations—like toggling between high-spin and low-spin states—can alter how reaction intermediates bind, speed up electron transport, and reduce energy barriers. Key methods for achieving this include defect engineering, doping, magnetic tuning, and structural modulation, each enabling precise control over how catalysts behave at the atomic level. Advanced diagnostic tools such as Mössbauer spectroscopy and X-ray absorption techniques are allowing researchers to observe spin behaviors in action. More importantly, these theories translate into measurable impact: for example, introducing manganese into RuO₂ increases both magnetic properties and OER performance; external magnetic fields applied to cobalt-based catalysts boost oxygen molecule activation in ORR. These findings suggest that designing spin-active catalysts isn't just a theoretical exercise—it's a practical strategy already enhancing real-world energy technologies.
"Electron spin offers a fundamentally new lever for tuning catalytic behavior at the atomic scale," said Dr. Liu Lin, lead author of the review. "By harnessing this quantum property, we can design catalysts that are more efficient, selective, and robust. This approach doesn't just add to our toolbox—it reshapes how we think about catalysis." The research team emphasizes that integrating principles from spintronics into electrocatalysis could drive major breakthroughs in energy conversion—an essential step toward achieving global carbon neutrality.
The ability to control electron spin could reshape multiple sectors of clean energy. In hydrogen production, spin-regulated catalysts make oxygen evolution reactions more efficient and cost-effective. In carbon capture and utilization, spin-tuned catalysts offer enhanced selectivity for converting CO₂ into useful fuels or chemicals. They also hold promise for advancing durable, high-performance fuel cells. As materials science continues to evolve, real-time spin dynamics and scalable production of spin-active catalysts could soon become cornerstones in building the next generation of green energy systems.
###
References
DOI
10.1016/j.esci.2024.100264
Original Source URL
https://doi.org/10.1016/j.esci.2024.100264
Funding information
This project was supported by the National Natural Science Foundation of China (Nos: 22271018, 22309012, and 22302013), and the NSF of Guangdong Province (2023A1515010554).
About eScience
eScience – a Diamond Open Access journal cooperated with KeAi and published online at ScienceDirect. eScience is founded by Nankai University (China) in 2021 and aims to publish high quality academic papers on the latest and finest scientific and technological research in interdisciplinary fields related to energy, electrochemistry, electronics, and environment. eScience provides insights, innovation and imagination for these fields by built consecutive discovery and invention. Now eScience has been indexed by SCIE, CAS, Scopus and DOAJ. Its first impact factor is 42.9, which is ranked first in the field of electrochemistry.