Developing a stable and high-performance W-CoMnP electrocatalyst by mitigating the Jahn-Teller effect through W doping strategy
2025-09-05
(Press-News.org)
Recently, a research team led by Professor Ge Lei from China University of Petroleum (Beijing) developed a simple template-free method to prepare cobalt-based and manganese-based precursors, and then doped W during the synthesis of transition bimetallic phosphides to obtain the W-doped bimetallic phosphides. The resulting catalyst exhibits excellent bifunctionality and can can be utilized as an electrode in anion exchange membrane (AEM) water electrolyzers. The research results have been published in the Chinese Journal of Catalysis.
W-CoMnP exhibits excellent oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performance, with relatively low overpotentials of 225 mV at 50 mA cm-2 (OER) and 95 mV at 10 mA cm-2 (HER). In addition, when the catalyst was evaluated as a bifunctional electrode, its cell voltage was as low as 1.52 V and lasted for more than 24 hours. In order to realize its commercial application, W-CoMnP was assembled into an anion exchange membrane (AEM) water electrolysis device, which can achieve continuous and stable hydrogen production under room temperature conditions.
Both electrostatic field theory and DFT theoretical calculations show that the electron density generated by the MOF method is more concentrated, thereby adjusting the electronic structure of W-CoMnP and generating unsaturated Co atoms and Mn atoms, thereby creating oxygen atom capture sites for the adsorption of W-CoMnP. Through the exploration of the Jahn Teller effect mechanism, controlling the spin state (S) of the Mn3+ cation provides a basic strategy to alleviate the Jahn-Teller distortion and enhance the stability of Mn-based materials. For Mn3+, two spin configurations can be assumed in W-CoMnP, including a high spin state (t2g3eg1, S=2) and a low spin state (t2g4eg0, S=1). W doping changes the electronic spin state of Mn to a low spin state, and the electrons of Mn3+ occupy all t2g energy levels and carry spin decay electrons, resulting in the failure of the Jahn Teller effect of Mn3+ in CoMnP, thereby allowing the material to exert its performance.
The study used a tungsten doping strategy to stabilize manganese-based bimetallic phosphide (W-CoMnP), effectively inhibiting the Mn³⁺ disproportionation and Mn²⁺ dissolution caused by the Jahn-Teller effect, and significantly improving the electrocatalytic activity and stability. The material exhibited excellent HER (η₁₀ = 95 mV) and OER (η₅₀ = 225 mV) performance, and achieved efficient and stable hydrogen evolution at 1.52 V in the AEM water electrolyzer, demonstrating its broad prospects in practical applications.
The results were published in Chinese Journal of Catalysis (DOI: 10.1016/S1872-2067(25)64669-9)
About the journal
Chinese Journal of Catalysis is co-sponsored by Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Chinese Chemical Society, and it is currently published by Elsevier group. This monthly journal publishes in English timely contributions of original and rigorously reviewed manuscripts covering all areas of catalysis. The journal publishes Reviews, Accounts, Communications, Articles, Highlights, Perspectives, and Viewpoints of highly scientific values that help understanding and defining of new concepts in both fundamental issues and practical applications of catalysis. Chinese Journal of Catalysis ranks among the top six journals in Applied Chemistry with a current SCI impact factor of 17.7. The Editors-in-Chief are Profs. Can Li and Tao Zhang.
At Elsevier http://www.journals.elsevier.com/chinese-journal-of-catalysis
Manuscript submission https://mc03.manuscriptcentral.com/cjcatal
END
ELSE PRESS RELEASES FROM THIS DATE:
2025-09-05
In the present era of modern nano-technologies, controlling light at the smallest scales is the key to faster communications, ultra-sensitive sensors, and revolutionary imaging systems. This is where Dirac plasmon polaritons (DPPs) come into play—exotic waves that blend light and electron motion in ultra-thin, two-dimensional materials.
Unlike ordinary light waves, which are limited by the speed of light in free space, DPPs can squeeze light into spaces a hundred times smaller than its natural wavelength. This makes them incredibly ...
2025-09-05
Soft magnetic materials can be easily magnetized and demagnetized, which makes them a key component in electrical power devices, such as generators, transformers, and amplifiers. As power electronics advance toward high-frequency operation, demand is growing for low-loss soft magnetic materials. The efficiency of these materials is fundamentally limited by iron loss, where energy is lost as heat when a varying magnetic field passes through them, as is typical in transformers and generators. Iron loss mainly consists of hysteresis loss, classical eddy current loss, and excess eddy current loss. Among these, excess eddy current loss becomes increasingly dominant ...
2025-09-05
Over five percent of children and adolescents are diagnosed with attention deficit/hyperactivity disorder (ADHD) globally. This condition is characterized by a short attention span, hyperactivity or impulsive behavior that is age-inappropriate, making it difficult for patients to navigate interpersonal relationships, the formal education system, and social life. Researchers have used brain imaging analyses such as magnetic resonance imaging (MRI) to understand the neurological basis of ADHD. Understanding brain structure abnormalities that lead to ADHD-related pathologies is crucial for designing early assessment and intervention systems, especially for children.
Although ...
2025-09-05
CLEVELAND—Technology developed at Case Western Reserve University can restore a sense of touch that makes a prosthetic hand feel like a part of one’s own body instead of feeling artificial and disconnected.
Now this technology will take a major step toward commercialization: in a new clinical trial, 12 people with upper limb amputation will be recruited to compare standard prosthetic arms and hands to the sensory-enabled neural-controlled prostheses developed at the university since 2015.
Researchers at Case Western Reserve ...
2025-09-05
Truckee, CA (5 September 2025) -- New research finds that treated forests are 88% less susceptible to high severity wildfire than their unmanaged counterparts, and can recover carbon stocks in only 7 years. The findings, carried out by researchers at Vibrant Planet, Northern Arizona University, American Forest Foundation, and Blue Forest, make the case for more proactive forest management across the US, and specifically, the increasingly wildfire-prone West. Read the publication in Frontiers in Forests and Global ...
2025-09-05
A study has found that adolescents become highly motivated to seek rewards after just a few hours of social isolation. This may be beneficial in driving them towards social interaction, but when opportunities for connection are limited could lead them to pursue less healthy rewards like alcohol or drugs.
When we feel socially isolated, our brain motivates us to seek rewards. Current theory holds that this is a beneficial evolutionary adaptation to help us reconnect with others.
The University of Cambridge-led study found that people in their late teens are very sensitive ...
2025-09-05
A pizza shop with 30 delivery people ought to be able to deliver a lot of pizzas — if their cars don’t break down on the way. Likewise, genes that produce a lot of messenger RNA (mRNA) molecules can build a lot of proteins — if these molecules don’t fall apart before the job gets done.
Inside almost every human cell is DNA, a comprehensive instruction manual for building and maintaining the body. Genes in that manual contain the instructions for making proteins. But those instructions must travel from the cell’s nucleus, where the DNA lives, to the outer region of the cell ...
2025-09-05
Fibrosis of the lungs is often a silent disease until it's too late. By the time patients are diagnosed, the scarring of their lung tissue is already advanced, and current treatments offer little more than a slowing of the inevitable. But what if we could understand the very first steps of this disease before irreversible damage sets in?
That’s the question Claudia Loebel, Reliance Industries Term Assistant Professor in Bioengineering, and Donia Ahmed, a doctoral student in Loebel’s lab, set out to answer. Their Nature Materials paper, a collaborative study spanning the University of Pennsylvania, the University of Michigan and Drexel University, explores how subtle changes ...
2025-09-05
East Hanover, NJ – Sept 5, 2025 –Trevor Dyson-Hudson, MD, FASIA, of Kessler Foundation was awarded the prestigious James J. Peters Distinguished Service Award at the 2025 Annual Meeting and Expo of the Academy of Spinal Cord Injury Professionals (ASCIP) in Philadelphia today. He has been recognized for his outstanding contributions and accomplishments in spinal cord injury healthcare and his dedication to excellence in treating SCI patients.
Dr. Dyson-Hudson is co-director of the Center for Spinal Cord Injury Research and the Derfner-Lieberman Laboratory for Regenerative ...
2025-09-05
Niigata, Japan - Researchers from Brain Research Institute, Niigata University, Japan have revealed that environment influences social behaviours in autism. By using zebrafish that have a mutation in ube3a, a gene linked to Angelman Syndrome (AS) and autism spectrum disorders (ASD), they demonstrated that sensory processing of environmental information is determinant in the outcome of socializing or not. The findings suggest that environmental adjustment could hold therapeutic potential in ASD.
ASD is characterized by difficulties in social interaction and repetitive behaviours. While genetics are known to play an important role, environmental ...
LAST 30 PRESS RELEASES:
[Press-News.org] Developing a stable and high-performance W-CoMnP electrocatalyst by mitigating the Jahn-Teller effect through W doping strategy
