Investigation of Ca Insertion into α-MoO3 Nanoparticles for High Capacity Ca-Ion Cathodes
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States); Chung-Ang Univ., Seoul (Korea, Republic of)
- Argonne National Lab. (ANL), Lemont, IL (United States); Univ. of Illinois at Chicago, IL (United States)
Calcium-ion batteries (CIBs) are a promising alternative to lithium-ion batteries (LIBs) due to the low redox potential of calcium metal and high abundance of calcium compounds. Due to its layered structure, α-MoO3 is regarded as a promising cathode host lattice. While studies have reported that α-MoO3 can reversibly intercalate Ca ions, limited electrochemical activity has been noted, and its reaction mechanism remains unclear. Here, we re-examine Ca insertion into α-MoO3 nanoparticles with a goal to improve reaction kinetics and clarify the storage mechanism. The α-MoO3 electrodes demonstrated a specific capacity of 165 mA h g–1 centered near 2.7 V vs Ca2+/Ca, stable long-term cycling, and good rate performance at room temperature. Furthermore, this work demonstrates that, under the correct conditions, layered oxides can be a promising host material for CIBs and renews prospects for CIBs.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Argonne National Laboratory (ANL), Lemont, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357; SC0012704
- OSTI ID:
- 1880827
- Alternate ID(s):
- OSTI ID: 1886232
- Report Number(s):
- BNL-223265-2022-JAAM; 173352
- Journal Information:
- Nano Letters, Journal Name: Nano Letters Journal Issue: 6 Vol. 22; ISSN 1530-6984
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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