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Title: Combined Theoretical and Experimental Approach to the Discovery of Electrochemically Active Mixed Polyanionic Phosphatonitrates, AFePO4NO3 (A = NH4/Li, K)

Journal Article · · Chemistry of Materials
 [1];  [1]
  1. Missouri Univ. of Science and Technology, Rolla, MO (United States)

A new class of mixed polyanionic transition metal phosphatonitrate with the general formula AFePO4NO3 (A = NH4/Li, K) has been synthesized following a computational predictive study based on DFT calculations. Structures of the crystalline products have been solved through synchrotron powder XRD and single-crystal XRD techniques. This class of materials exhibits the rare coordination of PO43– and NO3 to a single transition metal center and is structurally related to the rare mineral bonshtedtite (Na3FePO4CO3), which has been used as the initial model for predicting phosphatonitrates. (NH4)1–xLixFePO4NO3 has been found to be capable of reversible electrochemical Li- and Na-ion intercalation in the potential range 2.0–4.2 V at a theoretical capacity of ca. 116 mAh·g–1. In conclusion, various aspects of structural, chemical/electrochemical, and spectroscopic features of AFePO4NO3 have been discussed in this article.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1324793
Journal Information:
Chemistry of Materials, Vol. 28, Issue 14; ISSN 0897-4756
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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