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Volume 10
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10.3390/en10122135
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Article

Ageing and Water-Based Processing of LiFeMnPO4 Secondary Agglomerates and Its Effects on Electrochemical Characteristics

by
Benjamin Starke
1,*,
Stefan Seidlmayer
2,
Oleksandr Dolotko
2,
Ralph Gilles
2 and
Karl-Heinz Pettinger
1
1
Technology Center for Energy, University of Applied Sciences Landshut, Am Lurzenhof 1, 84036 Landshut, Germany
2
Heinz Maier-Leibnitz Zentrum (MLZ), Technical University of Munich (TUM), 85748 Garching, Germany
*
Author to whom correspondence should be addressed.
Energies 2017, 10(12), 2135; https://doi.org/10.3390/en10122135
Submission received: 24 November 2017 / Revised: 8 December 2017 / Accepted: 11 December 2017 / Published: 15 December 2017
(This article belongs to the Section D: Energy Storage and Application)
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Abstract

LiFeMnPO4 secondary agglomerates have been aged under different temperature and moisture conditions. The aged and pristine powder samples were then processed to water- and solvent-based cathodes. Structural studies by means of neutron and X-ray diffraction revealed that neither ageing nor water-based processing significantly modified the crystal structure of LiFeMnPO4 secondary agglomerates. Electrochemical characterization was carried out with full-cells. It was found that long-term cycling is similar independent of the solvent used for slurry preparation. Full-cells assembled with water-based cathodes show a better C-rate capability due to a more homogeneous distribution of cathode constituents compared to solvent-based ones. In no case was any negative effect of initial active material ageing on the electrochemical performance found. During ageing and processing, LiFeMnPO4 is effectively protected by carbon coating and water can be completely removed by drying since it is only reversibly bound. This contribution shows that LiFeMnPO4 secondary agglomerates allow simplified active material handling and have a high potential for sustainable water-based electrode manufacturing.
Keywords: lithium ion battery; LiFeMnPO4; ageing; water-based processing; sustainable battery production lithium ion battery; LiFeMnPO4; ageing; water-based processing; sustainable battery production

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MDPI and ACS Style

Starke, B.; Seidlmayer, S.; Dolotko, O.; Gilles, R.; Pettinger, K.-H. Ageing and Water-Based Processing of LiFeMnPO4 Secondary Agglomerates and Its Effects on Electrochemical Characteristics. Energies 2017, 10, 2135. https://doi.org/10.3390/en10122135

AMA Style

Starke B, Seidlmayer S, Dolotko O, Gilles R, Pettinger K-H. Ageing and Water-Based Processing of LiFeMnPO4 Secondary Agglomerates and Its Effects on Electrochemical Characteristics. Energies. 2017; 10(12):2135. https://doi.org/10.3390/en10122135

Chicago/Turabian Style

Starke, Benjamin, Stefan Seidlmayer, Oleksandr Dolotko, Ralph Gilles, and Karl-Heinz Pettinger. 2017. "Ageing and Water-Based Processing of LiFeMnPO4 Secondary Agglomerates and Its Effects on Electrochemical Characteristics" Energies 10, no. 12: 2135. https://doi.org/10.3390/en10122135

APA Style

Starke, B., Seidlmayer, S., Dolotko, O., Gilles, R., & Pettinger, K.-H. (2017). Ageing and Water-Based Processing of LiFeMnPO4 Secondary Agglomerates and Its Effects on Electrochemical Characteristics. Energies, 10(12), 2135. https://doi.org/10.3390/en10122135

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