Journal
CHEMISTRY OF MATERIALS
Volume 32, Issue 11, Pages 4553-4563Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.0c00560
Keywords
-
Funding
- Center for Synthetic Control Across Length-scales for Advancing Rechargeables (SCALAR), an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0019381]
- UC Santa Barbara Materials Research Science and Engineering Center (MRSEC) [NSF DMR 1720256]
- DOE Office of Science [DE-AC02-06CH11357]
Ask authors/readers for more resources
PNb9O25, a Wadsley-Roth compound whose structure is obtained by appropriate crystallographic shear of the ReO3 structure, is a high-power electrode material that can reach 85% of the equilibrium capacity in 30 min and 67% in 6 min. Here we show that multielectron redox, as observed through X-ray absorption spectroscopy and X-ray photoelectron spectroscopy, and an insulator-to-metal transition upon lithium insertion, as suggested by a number of complementary techniques, contribute to the impressive performance. Chemically tuning the tetrahedral site between phosphorus and vanadium leads to significant changes in the electrochemistry and kinetics of lithium insertion in the structure, pointing to larger implications for the use of crystallographic shear phases as fast-charging electrode materials.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available