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Investigation of Ca Insertion into α-MoO3 Nanoparticles for High Capacity Ca-Ion Cathodes

Journal Article · · Nano Letters
 [1];  [1];  [2];  [1];  [3];  [4];  [1];  [1];  [4];  [1];  [2];  [1];  [1]
  1. Argonne National Lab. (ANL), Lemont, IL (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States); Chung-Ang Univ., Seoul (Korea, Republic of)
  4. 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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