TY - JOUR
T1 - Noncrystalline Nanocomposites as a Remedy for the Low Diffusivity of Multivalent Ions in Battery Cathodes
AU - Orikasa, Yuki
AU - Kisu, Kazuaki
AU - Iwama, Etsuro
AU - Naoi, Wako
AU - Yamaguchi, Yusuke
AU - Yamaguchi, Yoshitomo
AU - Okita, Naohisa
AU - Ohara, Koji
AU - Munesada, Toshiyuki
AU - Hattori, Masashi
AU - Yamamoto, Kentaro
AU - Rozier, Patrick
AU - Simon, Patrice
AU - Naoi, Katsuhiko
N1 - Funding Information:
This work was financially supported by the Japan Society for the Promotion of Science for Grant-in-Aid for Young Scientists (A) Grant Number 15H05500, Grant-in-Aid for Scientific Research(B) Grant Number 19H02694, and JGC-S Scholarship Foundation. The synchrotron radiation experiments were performed at SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal nos. 2015B1809, 2016A1769, 2016B1515, 2016B1522, 2017B1493, 2018A1355 2018B1429, 2019A1264, and 2019A1274, 2019B1401). The authors are grateful to Dr. McMahon Thomas Homer Reid for helpful discussion and proofreading.
Funding Information:
This work was financially supported by the Japan Society for the Promotion of Science for Grant-in-Aid for Young Scientists (A) Grant Number 15H05500, Grant-in-Aid for Scientific Research(B) Grant Number 19H02694, and JGC-S Scholarship Foundation. The synchrotron radiation experiments were performed at SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal nos. 2015B1809, 2016A1769, 2016B1515, 2016B1522, 2017B1493, 2018A1355, 2018B1429, 2019A1264, and 2019A1274, 2019B1401). The authors are grateful to Dr. McMahon Thomas Homer Reid for helpful discussion and proofreading.
Publisher Copyright:
Copyright © 2020 American Chemical Society.
PY - 2020/2/11
Y1 - 2020/2/11
N2 - Rechargeable batteries using multivalent metals are among the most promising next-generation battery systems due to their high capacity, high safety, and low cost compared with lithium-ion batteries. However, strong cation-anion interaction degrades diffusion in solid cathodes, an effect that must be mitigated to yield practical multivalent metal batteries. We show that a highly defective iron phosphate-carbon composite prepared by ultracentrifugation serves as a reversible insertion/deinsertion for magnesium ions with, and operates beyond, a 2-V cell voltage at room temperature. A composite of noncrystalline particles that embeds the surrounding carbon structure enhances the magnesium-ion diffusion in the solid phase with stability for cycle life. X-ray absorption spectroscopy, transmission electron microscopy with energy-dispersive X-ray spectroscopy, and high-energy X-ray scattering measurements demonstrate magnesium-ion insertion and extraction in the defective iron phosphate without conversion reactions. This work suggests promising applications for highly defective structures as intercalation hosts for multivalent ions.
AB - Rechargeable batteries using multivalent metals are among the most promising next-generation battery systems due to their high capacity, high safety, and low cost compared with lithium-ion batteries. However, strong cation-anion interaction degrades diffusion in solid cathodes, an effect that must be mitigated to yield practical multivalent metal batteries. We show that a highly defective iron phosphate-carbon composite prepared by ultracentrifugation serves as a reversible insertion/deinsertion for magnesium ions with, and operates beyond, a 2-V cell voltage at room temperature. A composite of noncrystalline particles that embeds the surrounding carbon structure enhances the magnesium-ion diffusion in the solid phase with stability for cycle life. X-ray absorption spectroscopy, transmission electron microscopy with energy-dispersive X-ray spectroscopy, and high-energy X-ray scattering measurements demonstrate magnesium-ion insertion and extraction in the defective iron phosphate without conversion reactions. This work suggests promising applications for highly defective structures as intercalation hosts for multivalent ions.
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U2 - 10.1021/acs.chemmater.9b03665
DO - 10.1021/acs.chemmater.9b03665
M3 - Article
AN - SCOPUS:85080052348
SN - 0897-4756
VL - 32
SP - 1011
EP - 1021
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 3
ER -
