TY - JOUR
T1 - MnO/Metal/Carbon Nanohybrid Lithium-Ion Battery Anode With Enhanced Electrochemical Performance
T2 - Universal Facile Scalable Synthesis and Fundamental Understanding
AU - Wang, Xiaoyan
AU - Ma, Liujia
AU - Ji, Qing
AU - Meng, Jian Qiang
AU - Liang, Suzhe
AU - Xu, Zhuijun
AU - Wang, Meimei
AU - Zuo, Xiuxia
AU - Xiao, Ying
AU - Zhu, Jin
AU - Xia, Yonggao
AU - Müller-Buschbaum, Peter
AU - Cheng, Ya Jun
N1 - Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/6/21
Y1 - 2019/6/21
N2 - MnO holds a great promise as an alternative lithium-ion battery anode. It is crucial to improve the cyclic stability and rate capability of MnO-based anodes. A facile scalable strategy to incorporate metal nanoparticles into the MnO/carbon anodes is developed as demonstrated by the MnO/Ag/C and MnO/Ni/C nanohybrids. Difunctional methacrylate monomers are used as solvent and carbon source, where the precursors of MnO and metal are homogeneously mixed at the molecular level and converted into a thermosetting polymer. MnO and metal nanoparticles are in situ formed and homogeneously embedded in the in situ formed carbon matrix after the carbonization process. The influence of the metal nanoparticles on the structure and properties of the MnO-based anodes is systematically investigated. The mass composition of the MnO phase within the nanohybrid is controlled to be at a relatively low level, which is helpful for maintaining a good cyclic stability at the expense of the reversible capacities. However, the reversible capacities are increased by the incorporation of the metal nanoparticles due to enhanced electrochemical kinetics, where both excellent cyclic stability and rate performance are exhibited simultaneously. The mechanism responsible for the performance improvement is explored by electrochemical impedance spectroscopy, cyclic voltammetry, and temperature-dependent resistivity measurements.
AB - MnO holds a great promise as an alternative lithium-ion battery anode. It is crucial to improve the cyclic stability and rate capability of MnO-based anodes. A facile scalable strategy to incorporate metal nanoparticles into the MnO/carbon anodes is developed as demonstrated by the MnO/Ag/C and MnO/Ni/C nanohybrids. Difunctional methacrylate monomers are used as solvent and carbon source, where the precursors of MnO and metal are homogeneously mixed at the molecular level and converted into a thermosetting polymer. MnO and metal nanoparticles are in situ formed and homogeneously embedded in the in situ formed carbon matrix after the carbonization process. The influence of the metal nanoparticles on the structure and properties of the MnO-based anodes is systematically investigated. The mass composition of the MnO phase within the nanohybrid is controlled to be at a relatively low level, which is helpful for maintaining a good cyclic stability at the expense of the reversible capacities. However, the reversible capacities are increased by the incorporation of the metal nanoparticles due to enhanced electrochemical kinetics, where both excellent cyclic stability and rate performance are exhibited simultaneously. The mechanism responsible for the performance improvement is explored by electrochemical impedance spectroscopy, cyclic voltammetry, and temperature-dependent resistivity measurements.
KW - dental methacrylate monomer
KW - lithium-ion battery anode
KW - manganese oxide
KW - metal
KW - nanoparticles
KW - thermal polymerization
UR - http://www.scopus.com/inward/record.url?scp=85065487495&partnerID=8YFLogxK
U2 - 10.1002/admi.201900335
DO - 10.1002/admi.201900335
M3 - Article
AN - SCOPUS:85065487495
SN - 2196-7350
VL - 6
JO - Advanced Materials Interfaces
JF - Advanced Materials Interfaces
IS - 12
M1 - 1900335
ER -