16 0

Quaternary Transition Metal Oxide Layered Framework: O3-Type Na[Ni(0.32)Fec(0.13)Co(0.15)Mn(0.40)]O-2 Cathode Material for High-Performance Sodium-Ion Batteries

Title
Quaternary Transition Metal Oxide Layered Framework: O3-Type Na[Ni(0.32)Fec(0.13)Co(0.15)Mn(0.40)]O-2 Cathode Material for High-Performance Sodium-Ion Batteries
Author
황장연
Keywords
NA-ION; ELECTRODE PERFORMANCE; HIGH-CAPACITY; HIGH-ENERGY; LITHIUM; P2-TYPE
Issue Date
2018-06
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY C, v. 122, no. 25, page. 13500-13507
Abstract
Analogous compounds in lithium-ion batteries (LIBs), various ternary chemical compositions in O3-type layered oxides, have been introduced in sodium-ion batteries (SIBs). However, O3-type ternary transition metal oxide cathodes, including the NaNixCoyMnzO2 and NaNixFeyMnzO2 (x + y + z = 1) compounds, continue to face several challenges with respect to their low reversible capacity and poor cycle retention owing to their structural instability. Herein, we propose the well-balanced quaternary transition metal oxide structure of O3-type Na[Ni0.32Fe0.13Co0.15Mn0.40]O-2 as cathode materials that have an average composition of both Na[Ni0.25Fe0.25Mn0.5]O-2 and Na[Ni0.4Co0.3Mn0.3]O-2 compounds. Compared to its respective ternary members, the Na[Ni0.32Fe0.13Co0.15Mn0.40]O-2 cathode exhibits a higher specific capacity as well as improved cycling stability and rate capability. The post-mortem ex-situ X-ray diffraction (XRD) studies of a cycled electrode clearly show that coexistence of quaternary transition metals in a Na[Ni0.32Fe0.13Co0.15Mn0.40]O-2 cathode could improve the structural stability. Moreover, quaternary transition metal oxide frameworks effectively prevent the dissolution of transition metals during cycling, thus improving the battery performances. The appealing physical properties and electrochemical performance of this material demonstrate its great promise for a high-performance O3-type cathode in sodium-ion batteries.
URI
https://pubs.acs.org/doi/10.1021/acs.jpcc.7b12140http://repository.hanyang.ac.kr/handle/20.500.11754/118973
ISSN
1932-7447
DOI
10.1021/acs.jpcc.7b12140
Appears in Collections:
CENTER FOR CREATIVE CONVERGENCE EDUCATION[S](창의융합교육원) > ETC
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE