Synthesis and Electrochemical Properties of Hierarchically Porous Zn(Co 1− x Mn x ) 2 O 4 Anodes for Li‐Ion Batteries

A hierarchically porous Zn(Co 1− x Mn x ) 2 O 4 anode is synthesized through a hydrothermal method. XRD measurements indicate that ZnCo 2 O 4 , ZnCo 1.5 Mn 0.5 O 4 , ZnCoMnO 4 , ZnCo 0.5 Mn 1.5 O 4 , and ZnMn 2 O 4 are isostructural in solid solution. Through analysis of X‐ray photoelectronic spectr...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Energy technology (Weinheim, Germany) Germany), 2017-09, Vol.5 (9), p.1526-1535
Hauptverfasser: Wong, Wei‐Ting, Chen, Bing‐Hong, Maggay, Irish Valerie B., Liu, Chang, Duh, Jenq‐Gong, Liu, Wei‐Ren
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A hierarchically porous Zn(Co 1− x Mn x ) 2 O 4 anode is synthesized through a hydrothermal method. XRD measurements indicate that ZnCo 2 O 4 , ZnCo 1.5 Mn 0.5 O 4 , ZnCoMnO 4 , ZnCo 0.5 Mn 1.5 O 4 , and ZnMn 2 O 4 are isostructural in solid solution. Through analysis of X‐ray photoelectronic spectra and EPMA and EDX mapping of Zn(Co 1− x Mn x ) 2 O 4 , it is confirmed that the valance of Mn is 3+ only, and that the Mn cation is distributed homogeneously in the ZnCo 2 O 4 ‐based structure. Interestingly, the pore‐size distributions of these spinel‐based anodes are tunable by changing the substituting content of Mn in the ZnCo 2 O 4 host. Compared with nanoporous ZnCo 2 O 4 and macroporous ZnMn 2 O 4 , the as‐synthesized ZnCoMnO 4 nanospheres exhibit a high capacity of 823 mAh g −1 with excellent cycling retention of more than 80 cycles without decay. The excellent cyclability might be attributed to the nanosized particles and the nature of the hierarchical pore‐size distribution. The results indicate that ZnCoMnO 4 is a good candidate as an anode for application in lithium‐ion batteries.
ISSN:2194-4288
2194-4296
DOI:10.1002/ente.201600634