1-D NiO nanorods pillared 2-D MnO2 nanosheets as lithium-free cathode materials for charged-state lithium batteries
Journal Article
·
· Chemical Engineering Science
- Wayne State Univ., Detroit, MI (United States); Uva Wellassa Univ., Badulla (Sri Lanka); Wayne State University
- US Army CCDC-GVSC, Warren, MI (United States)
- Wayne State Univ., Detroit, MI (United States)
Theoretically monolayer MnO2 sheets have an impressive high capacity of 616 mAh/g, but practically monolayer MnO2 sheets have poor performances due partially to monolayer restacking. In this paper, we report the preparation of three-dimensional porous NiO nanorod pillared δ-MnO2 nanosheets as integrated nanoarchitectures as lithium-free cathode materials. The as-synthesized NiO pillared δ-MnO2 nanosheets have resulted in a moderately high specific capacity of 185 mA h g–1, with more than 63% capacity retention after 200 cycles. In comparison, 2D MnO2 nanosheets without NiO pillared structures only achieved a low initial capacity of 137 mA h g–1, with just 17% capacity retention after 200 cycles. The dramatically improved electrochemical performances could be attributed to high surface areas with excellent porosity which provides more electrochemically active sites and thermodynamically favorable insertion pathways for the lithium ions. Furthermore, our results reveal that insertion of pillars is a promising strategy to explore in order to mitigate the restacking issues and achieve electrochemical performances close to theoretical values for monolayer MnO2.
- Research Organization:
- Wayne State Univ., Detroit, MI (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Grant/Contract Number:
- EE0008236
- OSTI ID:
- 1844949
- Alternate ID(s):
- OSTI ID: 1775621
- Journal Information:
- Chemical Engineering Science, Journal Name: Chemical Engineering Science Vol. 236; ISSN 0009-2509
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Binary Fe/Mn-Based Nanocomposites as Li-Free Cathode Materials for Li Batteries Assembled in Charged State
N-doped CMK-3 anchored with SnS{sub 2} nanosheets as anode of lithium ion batteries with superior cyclic performance and enhanced reversible capacity
Hybrid CuO/SnO{sub 2} nanocomposites: Towards cost-effective and high performance binder free lithium ion batteries anode materials
Journal Article
·
Wed Jan 19 19:00:00 EST 2022
· Industrial and Engineering Chemistry Research
·
OSTI ID:1844948
N-doped CMK-3 anchored with SnS{sub 2} nanosheets as anode of lithium ion batteries with superior cyclic performance and enhanced reversible capacity
Journal Article
·
Sat Sep 15 00:00:00 EDT 2018
· Journal of Solid State Chemistry (Print)
·
OSTI ID:22890211
Hybrid CuO/SnO{sub 2} nanocomposites: Towards cost-effective and high performance binder free lithium ion batteries anode materials
Journal Article
·
Mon Oct 06 00:00:00 EDT 2014
· Applied Physics Letters
·
OSTI ID:22350871