StorageX is pleased to be kicking off its monthly StorageX group meetings.  The objective of these group meetings is to create an opportunity for sharing research updates, sharing of ideas, and for informal social exchange of the StorageX ecosystem, analogous to a research group meeting. 

We invite the students, researchers and faculty of the StorageX Seed fund awards to attend and give a semi-annual update on their research. The meetings are held hybrid. Lunch is provided.

Speaker

Zhelong Jiang, PhD, Associate Scientist
SLAC-Stanford Battery Center, Applied Energy Division,
SLAC National Accelerator Laboratory

"Harnessing Irreversible Anion Redox to Engineer Crystal Disorder and Improve Electrode Stability"

Abstract:

A new strategy of preparing electrode materials with unconventional crystal ordering will be shown where irreversible anion redox is harnessed to induce topotactic structural evolution. Using this strategy, partially disordered layered Ni-rich cathode is created and shown to be electrochemically stable with a high Li inventory. The notorious c-collapse behavior, which happens in virtually all layered lithium-ion battery cathodes at high states-of-charge that degrades battery performance, is absent in the disordered layered cathode. As a result, a combination of high specific capacity and long cycle life is achieved. Such approach of reaction pathway engineering can be used in both synthesis and electrochemical activation to prepare future generations of battery electrode materials.

Speaker's bio:

Dr. Zhelong Jiang is an Associate Scientist at the SLAC-Stanford Battery Center, working in the development of new materials chemistries for the next-generation of energy storage technologies. Prior to joining the Batter Center, he was postdoc at Stanford University working with Prof. William Chueh, where he worked on the lithium-ion battery cathodes research. He specializes in the development and advanced characterization tools, such as diffraction and spectroscopy techniques, to understand the redox mechanism and structural changes during the electrochemical de-/lithiation of electrodes. He obtained his Ph. D. in Materials Science and Engineering from the University of Illinois at Urbana-Champaign, supervised by Prof Daniel Shoemaker, where he works on deciphering synthesis kinetics and mechanisms during the materials formation. He received his bachelor’s degree in Materials Engineering at Nanyang Technological University, Singapore, where he worked with Prof. Zhong Chen in the fabrication of photocatalytic nanomaterials.