High rate and long cycle life in Li-O2 batteries with highly efficient catalytic cathode configured with Co3O4 nanoflower
Abstract
The reaction mechanism of non-aqueous Li-O2 batteries is based on the deposition and decomposition of Li2O2. The polarization of Li-O2 batteries can be rapidly increased by operation under a high rate condition, resulting in the early capacity fade of the cells. Therefore, a well-designed catalyst with a unique structure and excellent catalytic ability is an important way to boost the round-trip performance of Li-O2 batteries, especially under high current density. In this work, a unique nanoflower structure assembled with Co3O4 nanosheets is synthesized by using 2-methylimidazole (2-MIM) as a structural directing agent. X-ray photoelectron spectroscopy (XPS) and Raman spectra reveal abundant oxygen vacancies on the surface of the Co3O4 nanoflower, which are beneficial for oxygen reduction and evolution reactions and long round-trip lifetime. Density functional theory results demonstrate that Co3O4 catalyst with oxygen vacancies could promote the wetting of Li2O2 on substrate and formation of a Li2O2 nanofilm, thereby boosting the discharge capacity of Li-O2 batteries. On account of the synergistic effect of abundant oxygen vacancies, the unique structure, and excellent oxygen evolution reaction, Co3O4 nanoflower-based cells could deliver ultralong lifetime of 276 and 248 cycles with a discharge capacity of 1000 mAh g(-1) under charge/discharge current densities of 0.5more »
- Authors:
-
- China Univ. of Petroleum, Beijing (China). College of New Energy and Materials, Beijing Key Lab. of Biogas Upgrading Utilization, and State Key Lab. of Heavy Oil Processing
- Argonne National Lab. (ANL), Lemont, IL (United States). Chemical Science and Engineering Division
- Argonne National Lab. (ANL), Lemont, IL (United States). Materials Sciences Division
- Tehcnische Univ., Darmstadt (Germany). Eduard-Zintl-Institut für Anorganische und Physikalische Chemie
- Xiamen Univ., Fujian (China). State Key Lab. of PCOSS
- Argonne National Lab. (ANL), Lemont, IL (United States). Chemical Science and Engineering Division; Stanford Univ., CA (United States). Materials Science and Engineering
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- National Key Research and Development Program (China); USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Vehicle Technologies (VTO); USDOE
- OSTI Identifier:
- 1574815
- Alternate Identifier(s):
- OSTI ID: 1703058
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Nano Energy
- Additional Journal Information:
- Journal Volume: 64; Journal Issue: C; Journal ID: ISSN 2211-2855
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; Co3O4 nanoflower; Li-O-2 batteries; long cycle life; oxygen vacancies
Citation Formats
Jiang, Zhuo-Liang, Xu, Gui-Liang, Yu, Zhou, Zhou, Tian-Hang, Shi, Wen-Ke, Luo, Cong-Shan, Zhou, Hong-Jun, Chen, Li-Bin, Sheng, Wen-Jia, Zhou, Mingxia, Cheng, Lei, Assary, Rajeev S., Sun, Shi-Gang, Amine, Khalil, and Sun, Hui. High rate and long cycle life in Li-O2 batteries with highly efficient catalytic cathode configured with Co3O4 nanoflower. United States: N. p., 2019.
Web. doi:10.1016/j.nanoen.2019.103896.
Jiang, Zhuo-Liang, Xu, Gui-Liang, Yu, Zhou, Zhou, Tian-Hang, Shi, Wen-Ke, Luo, Cong-Shan, Zhou, Hong-Jun, Chen, Li-Bin, Sheng, Wen-Jia, Zhou, Mingxia, Cheng, Lei, Assary, Rajeev S., Sun, Shi-Gang, Amine, Khalil, & Sun, Hui. High rate and long cycle life in Li-O2 batteries with highly efficient catalytic cathode configured with Co3O4 nanoflower. United States. https://doi.org/10.1016/j.nanoen.2019.103896
Jiang, Zhuo-Liang, Xu, Gui-Liang, Yu, Zhou, Zhou, Tian-Hang, Shi, Wen-Ke, Luo, Cong-Shan, Zhou, Hong-Jun, Chen, Li-Bin, Sheng, Wen-Jia, Zhou, Mingxia, Cheng, Lei, Assary, Rajeev S., Sun, Shi-Gang, Amine, Khalil, and Sun, Hui. 2019.
"High rate and long cycle life in Li-O2 batteries with highly efficient catalytic cathode configured with Co3O4 nanoflower". United States. https://doi.org/10.1016/j.nanoen.2019.103896. https://www.osti.gov/servlets/purl/1574815.
@article{osti_1574815,
title = {High rate and long cycle life in Li-O2 batteries with highly efficient catalytic cathode configured with Co3O4 nanoflower},
author = {Jiang, Zhuo-Liang and Xu, Gui-Liang and Yu, Zhou and Zhou, Tian-Hang and Shi, Wen-Ke and Luo, Cong-Shan and Zhou, Hong-Jun and Chen, Li-Bin and Sheng, Wen-Jia and Zhou, Mingxia and Cheng, Lei and Assary, Rajeev S. and Sun, Shi-Gang and Amine, Khalil and Sun, Hui},
abstractNote = {The reaction mechanism of non-aqueous Li-O2 batteries is based on the deposition and decomposition of Li2O2. The polarization of Li-O2 batteries can be rapidly increased by operation under a high rate condition, resulting in the early capacity fade of the cells. Therefore, a well-designed catalyst with a unique structure and excellent catalytic ability is an important way to boost the round-trip performance of Li-O2 batteries, especially under high current density. In this work, a unique nanoflower structure assembled with Co3O4 nanosheets is synthesized by using 2-methylimidazole (2-MIM) as a structural directing agent. X-ray photoelectron spectroscopy (XPS) and Raman spectra reveal abundant oxygen vacancies on the surface of the Co3O4 nanoflower, which are beneficial for oxygen reduction and evolution reactions and long round-trip lifetime. Density functional theory results demonstrate that Co3O4 catalyst with oxygen vacancies could promote the wetting of Li2O2 on substrate and formation of a Li2O2 nanofilm, thereby boosting the discharge capacity of Li-O2 batteries. On account of the synergistic effect of abundant oxygen vacancies, the unique structure, and excellent oxygen evolution reaction, Co3O4 nanoflower-based cells could deliver ultralong lifetime of 276 and 248 cycles with a discharge capacity of 1000 mAh g(-1) under charge/discharge current densities of 0.5 A g-1 and 1 A g-1, respectively. Finally, this study has shed light on a new strategy for catalyst preparation for long lifetime Li-O2 batteries.},
doi = {10.1016/j.nanoen.2019.103896},
url = {https://www.osti.gov/biblio/1574815},
journal = {Nano Energy},
issn = {2211-2855},
number = C,
volume = 64,
place = {United States},
year = {Tue Oct 01 00:00:00 EDT 2019},
month = {Tue Oct 01 00:00:00 EDT 2019}
}
Web of Science