TY - JOUR
T1 - Kirkendall Growth of Hollow Mn3O4 Nanoparticles upon Galvanic Reaction of MnO with Cu2+ and Evaluation as Anode for Lithium-Ion Batteries
AU - Varapragasam, Shelton J.P.
AU - Balasanthiran, Choumini
AU - Gurung, Ashim
AU - Qiao, Qiquan
AU - Rioux, Robert M.
AU - Hoefelmeyer, James D.
N1 - Funding Information:
This work was supported by the National Science Foundation (CHE-0840507, CHE-0722632, DGE-0903685) and NASA EPSCoR (NNX14AN22A and NNX16AQ98A). C.B. and R.M.R. are supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences Catalysis Science program, under Award DE-SC0016192.
Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/6/1
Y1 - 2017/6/1
N2 - We report the formation of high surface area hollow Mn3O4 nanoparticles that form as a result of the galvanic reaction of Cu2+ with MnO nanocrystals concomitant with a nanoscale Kirkendall effect. The MnO nanocrystals were prepared according to the ultralarge scale synthesis reported by Hyeon, which allowed the preparation of hollow Mn3O4 in multigram quantities. Ex-situ analyses with transmission electron microscopy and powder X-ray diffraction show the morphology and phase stability of the hollow particles correlate with DSC-TGA data and show collapse of the hollow particles at temperatures greater than 200 °C. Electrodes fabricated from hollow Mn3O4 exhibited excellent initial Li ion storage capability (initial discharge capacity = 1324 mAh/g) but poor cycling performance (97% loss of discharge capacity after 10th cycle), whereas Mn3O4-MWCNT electrodes exhibited good reversibility and discharge capacity of 760 mAh/g after 100 cycles.
AB - We report the formation of high surface area hollow Mn3O4 nanoparticles that form as a result of the galvanic reaction of Cu2+ with MnO nanocrystals concomitant with a nanoscale Kirkendall effect. The MnO nanocrystals were prepared according to the ultralarge scale synthesis reported by Hyeon, which allowed the preparation of hollow Mn3O4 in multigram quantities. Ex-situ analyses with transmission electron microscopy and powder X-ray diffraction show the morphology and phase stability of the hollow particles correlate with DSC-TGA data and show collapse of the hollow particles at temperatures greater than 200 °C. Electrodes fabricated from hollow Mn3O4 exhibited excellent initial Li ion storage capability (initial discharge capacity = 1324 mAh/g) but poor cycling performance (97% loss of discharge capacity after 10th cycle), whereas Mn3O4-MWCNT electrodes exhibited good reversibility and discharge capacity of 760 mAh/g after 100 cycles.
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U2 - 10.1021/acs.jpcc.7b01540
DO - 10.1021/acs.jpcc.7b01540
M3 - Article
AN - SCOPUS:85020886603
SN - 1932-7447
VL - 121
SP - 11089
EP - 11099
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 21
ER -