Univ. of Houston, Houston, TX (United States). Dept. of Electrical and Computer Engineering & Materials Science and Engineering Program
Vanderbilt Univ., Nashville, TN (United States). Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
Texas A&M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Argonne National Lab. (ANL), Argonne, IL (United States). X-Ray Science Division
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
Univ. of Houston, Houston, TX (United States). Dept. of Electrical and Computer Engineering & Materials Science and Engineering Program; Univ. of Houston, Houston, TX (United States). Texas Center for
Superconductivity
Magnesium rechargeable batteries potentially offer high-energy density, safety, and low cost due to the ability to employ divalent, dendrite-free, and earth-abundant magnesium metal anode. Despite recent progress, further development remains stagnated mainly due to the sluggish scission of magnesium-chloride bond and slow diffusion of divalent magnesium cations in cathodes. Here in this paper we report a battery chemistry that utilizes magnesium monochloride cations in expanded titanium disulfide. Combined theoretical modeling, spectroscopic analysis, and electrochemical study reveal fast diffusion kinetics of magnesium monochloride cations without scission of magnesium-chloride bond. The battery demonstrates the reversible intercalation of 1 and 1.7 magnesium monochloride cations per titanium at 25 and 60 °C, respectively, corresponding to up to 400 mAh g-1 capacity based on the mass of titanium disulfide. The large capacity accompanies with excellent rate and cycling performances even at room temperature, opening up possibilities for a variety of effective intercalation hosts for multivalent-ion batteries.
@article{osti_1398523,
author = {Yoo, Hyun Deog and Liang, Yanliang and Dong, Hui and Lin, Junhao and Wang, Hua and Liu, Yisheng and Ma, Lu and Wu, Tianpin and Li, Yifei and Ru, Qiang and others},
title = {Fast kinetics of magnesium monochloride cations in interlayer-expanded titanium disulfide for magnesium rechargeable batteries},
annote = {Magnesium rechargeable batteries potentially offer high-energy density, safety, and low cost due to the ability to employ divalent, dendrite-free, and earth-abundant magnesium metal anode. Despite recent progress, further development remains stagnated mainly due to the sluggish scission of magnesium-chloride bond and slow diffusion of divalent magnesium cations in cathodes. Here in this paper we report a battery chemistry that utilizes magnesium monochloride cations in expanded titanium disulfide. Combined theoretical modeling, spectroscopic analysis, and electrochemical study reveal fast diffusion kinetics of magnesium monochloride cations without scission of magnesium-chloride bond. The battery demonstrates the reversible intercalation of 1 and 1.7 magnesium monochloride cations per titanium at 25 and 60 °C, respectively, corresponding to up to 400 mAh g-1 capacity based on the mass of titanium disulfide. The large capacity accompanies with excellent rate and cycling performances even at room temperature, opening up possibilities for a variety of effective intercalation hosts for multivalent-ion batteries.},
doi = {10.1038/s41467-017-00431-9},
url = {https://www.osti.gov/biblio/1398523},
journal = {Nature Communications},
issn = {ISSN 2041-1723},
number = {1},
volume = {8},
place = {United States},
publisher = {Nature Publishing Group},
year = {2017},
month = {08}}