Journal
CHEMISTRY OF MATERIALS
Volume 32, Issue 14, Pages 6014-6025Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.0c01305
Keywords
-
Funding
- Joint Center for Energy Storage Research (JCESR) of the U.S. Department of Energy (DOE)
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
- DOE Office of Science User Facility [DE-AC02-05CH11231]
- National Research Foundation of the Korean Ministry of Science and ICT [NRF2018R1C1B6004808, NRF-2018R1A5A1025594]
Ask authors/readers for more resources
The use of oxide cathodes in Mg batteries would unlock a potential energy storage system that delivers high-energy density. However, poor kinetics of Mg diffusion in known solid oxide lattices strongly limits reversible intercalation, which motivates the sustained exploration of new candidates. Herein, nanocrystals of a few-layer phyllomanganate, reminiscent of the mineral vernadite, were shown to have considerable electrochemical activity toward Mg intercalation at room temperature, where it delivered similar to 190 mAh g(-1) at similar to 1.9 V (vs Mg/Mg2+) in batteries paired with a Mg metal anode. Multimodal characterization confirmed the notable degree of reversible intercalation by probing the structural, compositional, and redox changes undertaken by the oxide. Distinct levels of Mg activity were also observed while varying the content of small amounts of lattice water and the temperature of the reaction. The results reaffirm the prospects for operational Mg batteries using oxide cathode in moderate conditions, overcoming current limits of performance of this prospective technology.
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