Sodium-Rich Anti-Perovskite Solid Electrolytes

In this work published in the Journal of the Electrochemical Society, we studied the effect of cold-pressing and spark-plasma sintering (SPS) processing on the Na3OBr sodium-rich anti-perovskite solid electrolytes was studied. SPS was found to reduce the interfacial impedance by 3 orders of magnitude. The much lower conductivity of Na3OBr compared to the lithium analogue…

Uniform second Li ion intercalation in solid state ε-LiVOPO4

In this follow-on work as part of the NECCESS EFRC, a combination of hard and soft x–ray photoelectron and absorption spectroscopy techniques to depth profile solid state synthesized LiVOPO4, a promising multi-electron electrode for rechargeable lithium-ion batteries. This work confirms that limited kinetics in the high voltage regime are responsible for the inability to fully…

Upcoming talks at XXV International Materials Research Congress

Prof Ong and Zhenbin Wang will be giving the following talks at the upcoming XXV International Materials Research Congress held in Cancun, Mexico. Shyue Ping Ong, “Multi-Electron Polyanion Cathodes For High Energy Density Alkali-Ion Batteries”, Symposium B4. Materials and technologies for stationary electrochemical energy storage, Wed Aug 17 2016, 8:30am. Zhenbin Wang, “Discovery of Novel Narrow-Band Red Phosphors…

Dopant segregation and embrittlement at Mo grain boundaries

Richard Tran and Zihan Xu published their paper on “Computational study of metallic dopant segregation and embrittlement at Molybdenum grain boundaries” in Acta Materialia. Mo and its alloys are important refractory materials for high temperature applications, but suffer from low ductility. In this work, we investigated the segregation and strengthening effects of 29 metallic dopants using DFT and…

pymatgen 4.0.0 has been released

Version 4.0.0 of pymatgen has just been released. This new version cleans up a lot of the old deprecated code, and includes a lot of new functionality such as ABINIT8 support, improved lammps analysis, and many bug fixes. Check it out at http://www.pymatgen.org.

Pymatgen is one of the top cited papers in Computational Materials Science

Prof Ong’s paper “Python Materials Genomics (pymatgen): A robust, open-source python library for materials analysis” are among the top 3 most cited papers in the journal Computational Materials Science since 2011. Check out the paper and find out how the open-source pymatgen library can help accelerate your research today!

Talks at 229th ECS Meeting

Zhuoying and Iek-Heng are giving talks on their work on Na3PS4 and Li7P3S11 solid electrolytes at the 229th ECS Meeting in San Diego. Both talks are in the morning (9am and 11:30am) Wed Jun 1 in the Symposium A04 – Battery Modeling and Computation at the Hilton San Diego Bayfront – Indigo 202A. Also, Prof…

Electronic structure descriptor for narrow-band red phosphors

Congratulations to Zhenbin on his first paper “Electronic Structure Descriptor for Discovery of Narrow-Band Red-Emitting Phosphors” in Chemistry of Materials! Narrow-band red-emitting phosphors are a critical component in phosphor-converted light-emitting diodes for highly efficient illumination-grade lighting. In this work, we report the discovery of a quantitative descriptor for narrow-band Eu2+-activated emission identified through a comparison…