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Article

Structural Effects of Anomalous Current Densities on Manganese Hexacyanoferrate for Li-Ion Batteries

1
Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
2
Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
3
Synchrotron SOLEIL, L’orme des Merisiers, BP 48 Saint Aubin, 91192 Gif-sur-Yvette, France
4
Institute Charles Gerhardt Montpellier (ICGM), University of Montpellier, ENSCM, CNRS, 34095 Montpellier, France
5
Réseau sur le Stockage Electrochimique de l’Energie (RS2E), National Centre for Scientific Research (CNRS), 80039 Amiens, France
6
Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2020, 10(21), 7573; https://doi.org/10.3390/app10217573
Received: 4 October 2020 / Revised: 21 October 2020 / Accepted: 26 October 2020 / Published: 27 October 2020
(This article belongs to the Special Issue Synchrotron- and FEL-Based X-ray Methods for Battery Studies)
A battery management system (BMS) plays a pivotal role in providing optimal performance of lithium-ion batteries (LIBs). However, the eventual malfunction of the BMS may lead to safety hazards or reduce the remaining useful life of LIBs. Manganese hexacyanoferrate (MnHCF) was employed as the positive electrode material in a Li-ion half-cell and subjected to five cycles at high current densities (10 A gMnHCF−1) and to discharge at 0.1 A gMnHCF−1, instead of classical charge/discharge cycling with initial positive polarization at 0.01 A gMnHCF−1, to simulate a current sensor malfunctioning and to evaluate the electrochemical and structural effects on MnHCF. The operando set of spectra at the Mn and Fe K-edges was further analyzed through multivariate curve resolution analysis with an alternating least squares algorithm (MCR–ALS) and extended X-ray absorption fine structure (EXAFS) spectroscopy to investigate the structural modifications arising during cycling after the applied electrochemical protocol. The coulombic efficiency in the first cycle was dramatically affected; however, the local structural environment around each photo absorber recovered during charging. The identification of an additional spectral contribution in the electrochemical process was achieved through MCR-ALS analysis, and the Mn-local asymmetry was thoroughly explored via EXAFS analysis. View Full-Text
Keywords: Prussian blue analog; manganese hexacyanoferrate; MCR-ALS; XAFS; EXAFS; li-ion batteries; battery management system Prussian blue analog; manganese hexacyanoferrate; MCR-ALS; XAFS; EXAFS; li-ion batteries; battery management system
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MDPI and ACS Style

Mullaliu, A.; Belin, S.; Stievano, L.; Giorgetti, M.; Passerini, S. Structural Effects of Anomalous Current Densities on Manganese Hexacyanoferrate for Li-Ion Batteries. Appl. Sci. 2020, 10, 7573. https://doi.org/10.3390/app10217573

AMA Style

Mullaliu A, Belin S, Stievano L, Giorgetti M, Passerini S. Structural Effects of Anomalous Current Densities on Manganese Hexacyanoferrate for Li-Ion Batteries. Applied Sciences. 2020; 10(21):7573. https://doi.org/10.3390/app10217573

Chicago/Turabian Style

Mullaliu, Angelo, Stéphanie Belin, Lorenzo Stievano, Marco Giorgetti, and Stefano Passerini. 2020. "Structural Effects of Anomalous Current Densities on Manganese Hexacyanoferrate for Li-Ion Batteries" Applied Sciences 10, no. 21: 7573. https://doi.org/10.3390/app10217573

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