Max Planck Institute for Solid State Research

Phase evolution in single-crystalline LiFePO₄ followed by in-situ scanning X-ray microscopy of a micrometer-sized battery

Authors

N. Ohmer, B. Fenk, D. Samuelis, C.-C. Chen, M. Weigand¹, E. Goering¹, G. Schütz¹, and J. Maier

¹Max Planck Institute for Intelligent Systems

Departments

Physical Chemistry of Solids (Joachim Maier)

We built a micrometer-sized all-solid-state thin film battery to follow in-situ the (de)lithiation mechanism of single crystalline LiFePO₄ along the fast (010) orientation using scanning transmission X-ray microscopy. The starting point of phase transformation is dictated by the respective conductivities reflecting the defect chemical situation, while the growth pattern of both LFP and FP was clearly found to be dominated by elastic effects rather than being transport controlled.

For the full text, see the German version.

Corresponding author

Niels Ohmer

N.Ohmer@... Max Planck Institute for Solid State Research

References

Ohmer, N.; Fenk, B.; Samuelis, D.; Chen, C.-C.; Maier, J.; Weigand, M.; Goering, E.; Schütz, G.

Phase evolution in single-crystalline LiFePO₄ followed by in-situ scanning X-ray microscopy of a micrometre-sized battery

Nature Communications 6, 6045 (2015)

Source

Zhu, C.; Weichert, K.; Maier, J.

Electronic Conductivity and Defect Chemistry of Heterosite FePO₄

Advanced Functional Materials 21, 1917-1921 (2011)

Weichert, K.; Sigle, W.; van Aken, P.A.; Jamnik, J.; Zhu, C.; Amin, R.; Acartürk, T.; Starke, U.; Maier, J.

Phase Boundary Propagation in Large LiFePO₄ Single Crystals on Delithiation

Journal of the American Chemical Society 134, 2988-2992 (2012)

Phase evolution in single-crystalline LiFePO4 followed by in-situ scanning X-ray microscopy of a micrometer-sized battery

Phase evolution in single-crystalline LiFePO₄ followed by in-situ scanning X-ray microscopy of a micrometer-sized battery