Kirkendall Growth of Hollow Mn3O4 Nanoparticles upon Galvanic Reaction of MnO with Cu2+ and Evaluation as Anode for Lithium-Ion Batteries

被引：33

作者：

Varapragasam, Shelton J. P. ^{[1
]}

Balasanthiran, Choumini ^{[2
]}

Gurung, Ashim ^{[4
]}

Qiao, Qiquan ^{[4
]}

Rioux, Robert M. ^{[2
,3
]}

Hoefelmeyer, James D. ^{[1
]}

机构：

[1] Univ South Dakota, Dept Chem, 414 E Clark St, Vermillion, SD 57069 USA

[2] Penn State Univ, Dept Chem Engn, 165 Fenske Lab, University Pk, PA 16802 USA

[3] Penn State Univ, Dept Chem, 165 Fenske Lab, University Pk, PA 16802 USA

[4] South Dakota State Univ, Dept Elect Engn, 020 EECS, Brookings, SD 57007 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2017年 / 121卷 / 21期

基金：

美国国家科学基金会;

关键词：

DEPENDENT MAGNETIC-PROPERTIES; NITROGEN-DOPED GRAPHENE; OXYGEN REDUCTION; LOW-TEMPERATURE; HYDROTHERMAL SYNTHESIS; OXIDE NANOPARTICLES; ASSISTED SYNTHESIS; FACILE SYNTHESIS; COLLOIDAL MN3O4; NANOCRYSTALS;

D O I：

10.1021/acs.jpcc.7b01540

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 degrees 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.

引用

页码：11089 / 11099

页数：11

共 72 条

[1] Synthesis of Uniform Hollow Oxide Nanoparticles through Nanoscale Acid Etching [J].