Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/100639
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Hierarchical mesoporous/macroporous perovskite La₀.₅Sr₀.₅CoO₃-ₓ nanotubes: a bifunctional catalyst with enhanced activity and cycle stability for rechargeable lithium oxygen batteries |
Other Titles: | Hierarchical mesoporous/macroporous perovskite La(0).(5)Sr(0).(5)CoO(3)-(x) nanotubes: a bifunctional catalyst with enhanced activity and cycle stability for rechargeable lithium oxygen batteries |
Author: | Liu, G. Chen, H. Xia, L. Wang, S. Ding, L. Li, D. Xiao, K. Dai, S. Wang, H. |
Citation: | ACS Applied Materials and Interfaces, 2015; 7(40):22478-22486 |
Publisher: | American Chemical Society |
Issue Date: | 2015 |
ISSN: | 1944-8244 1944-8252 |
Statement of Responsibility: | Guoxue Liu, Hongbin Chen, Lu Xia, Suqing Wang, Liang-Xin Ding, Dongdong Li, Kang Xiao, Sheng Dai and Haihui Wang |
Abstract: | Perovskites show excellent specific catalytic activity toward both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in alkaline solutions; however, small surface areas of the perovskites synthesized by traditional sol−gel methods lead to low utilization of catalytic sites, which gives rise to poor Li−O2 batteries performance and restricts their application. Herein, a hierarchical mesporous/macroporous perovskite La0.5Sr0.5CoO3‑x (HPN-LSC) nanotube is developed to promote its application in Li−O2 batteries. The HPNLSC nanotubes were synthesized via electrospinning technique followed by postannealing. The as-prepared HPN-LSC catalyst exhibits outstanding intrinsic ORR and OER catalytic activity. The HPN-LSC/KB electrode displays excellent performance toward both discharge and charge processes for Li−O2 batteries, which enhances the reversibility, the round-trip efficiency, and the capacity of resultant batteries. The synergy of high catalytic activity and hierarchical mesoporous/macroporous nanotubular structure results in the Li−O2 batteries with good rate capability and excellent cycle stability of sustaining 50 cycles at a current density of 0.1 mA cm−2 with an upperlimit capacity of 500 mAh g−1. The results will benefit for the future development of high-performance Li−O2 batteries using hierarchical mesoporous/macroporous nanostructured perovskite-type catalysts. |
Keywords: | Bifunctional catalysts electrospinning hierarchical mesoporous/macroporous nanotubes lithium−oxygen batteries perovskites |
Rights: | Copyright © 2015 American Chemical Society |
DOI: | 10.1021/acsami.5b06587 |
Grant ID: | http://purl.org/au-research/grants/arc/FT140100757 |
Published version: | http://dx.doi.org/10.1021/acsami.5b06587 |
Appears in Collections: | Aurora harvest 3 Chemical Engineering publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.