Insights into the Performance Degradation of Oxygen-Type Manganese-Rich Layered Oxide Cathodes for High-Voltage Sodium-Ion Batteries

Journal Article · Fri Sep 14 00:00:00 UTC 2018 · ACS Applied Energy Materials

DOI:https://doi.org/10.1021/acsaem.8b01325· OSTI ID:1493916

Ma, Tianyuan ^[1]; Xu, Gui-Liang ^[2]; Li, Yan ^[2]; Song, Boao ^[3]; Zeng, Xiaoqiao ^[2]; Su, Chi-Cheung ^[2]; Mattis, Wenjuan Liu ^[4]; Guo, Fangmin ^[5]; Ren, Yang ^[5]; Kou, Ronghui ^[5]; Sun, Chengjun ^[5]; Heald, Steve M. ^[5]; Wang, Hsien-Hau ^[6]; Shahbazian-Yassar, Reza ^[3]; Jorne, Jacob ^[7]; Chen, Zonghai ^[2]; Amine, Khalil ^[8]

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1. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division; Univ. of Rochester, NY (United States). Materials Science Program
2. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
3. Univ. of Illinois, Chicago, IL (United States). Dept. of Mechanical and Industrial Engineering
4. Microvast Inc., Stafford, TX (United States)
5. Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division. Advanced Photon Source
6. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
7. Univ. of Rochester, NY (United States). Materials Science Program. Dept. of Chemical Engineering
8. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division; Stanford Univ., CA (United States). Materials Science and Engineering

The cost of batteries is becoming as important as the energy density for large-scale electrochemical energy storage application. Sodium manganese-rich layered oxides (P-type and O-type) are thus one of the promising cathode materials for rechargeable batteries because of the relatively low cost of manganese and sodium. The O-type cathodes are more promising for practical application owing to their high sodium-ion stoichiometry. However, most of these materials suffer from rapid capacity decay during high-voltage cycling. We used synchrotron X-ray probes coupled with electrochemical techniques to disclose the structural evolution of α-NaMnO₂ during solid-state synthesis and electrochemical cycling. During high-voltage cycling, a substantial increase of interfacial microstrain from both stacking faults and Mn cation migration was found to pin down this material’s layered structures and simultaneously block the diffusion pathways of Na⁺, thus leading to the performance degradation. The findings presented in this work can guide future development of high-performance sodium-ion cathode materials.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Illinois, Chicago, IL (United States)
• Sponsoring Organization: National Science Foundation (NSF) (United States); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Grant/Contract Number: AC02-06CH11357
• OSTI ID: 1493916
• Journal Information: ACS Applied Energy Materials, Journal Name: ACS Applied Energy Materials Journal Issue: 10 Vol. 1; ISSN 2574-0962
• Publisher: American Chemical Society (ACS)
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
cathode material
cation migration
degradation
microstrain
sodium-ion batteries
stacking faults
α-NaMnO2