High-Voltage Phosphate Cathodes for Rechargeable Ca-Ion Batteries
Journal Article
·
· ACS Energy Letters
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Seoul National Univ. (Korea, Republic of)
- Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Illinois, Chicago, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Waterloo, ON (Canada)
Calcium-ion batteries (CIBs) are under investigation as next-generation energy storage devices due to their theoretically high operating potentials and lower costs tied to the high natural abundance of calcium. However, the development of CIBs has been limited by the lack of available positive electrode materials. In this study, for the first time, we report two functional polyanionic phosphate materials as high-voltage cathodes for CIBs at room temperature. NaV2(PO4)3 electrodes were found to reversibly intercalate 0.6 mol of Ca2+ (81 mA h g–1) near 3.2 V (vs Ca2+/Ca) with stable cycling performance at a current density of 3.5 mA g–1. The olivine framework material FePO4 reversibly intercalates 0.2 mol of Ca2+ (72 mA h g–1) near 2.9 V (vs Ca2+/Ca) at a current density of 7.5 mA g–1 in the first cycle. Structural, electronic, and compositional changes are consistent with reversible Ca2+ intercalation into these two materials.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1774597
- Journal Information:
- ACS Energy Letters, Journal Name: ACS Energy Letters Journal Issue: 10 Vol. 5; ISSN 2380-8195
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Investigation of Rechargeable Calcium Metal-Selenium Batteries Enabled by Borate-Based Electrolytes
Investigation of Ca Insertion into α-MoO3 Nanoparticles for High Capacity Ca-Ion Cathodes
Journal Article
·
Tue Mar 07 19:00:00 EST 2023
· Chemistry of Materials
·
OSTI ID:1989122
Investigation of Ca Insertion into α-MoO3 Nanoparticles for High Capacity Ca-Ion Cathodes
Journal Article
·
Tue Mar 01 19:00:00 EST 2022
· Nano Letters
·
OSTI ID:1880827