Improved Electrode Performance of Porous LiFePO4 Using RuO2 as an Oxidic Nanoscale Interconnect


  • The authors thank G. Götz, P. Kopold, Dr. W. Sigle (from the Max Planck Institute for Metal Research) and Dr. S. Hore for their technical support and helpful discussions. The authors are indebted to the MPG-ENERCHEM project. Supporting Information is available online from Wiley InterScience or from the authors.


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By using nanometer-sized RuO2 to “metalize” tiny pores and even “repair” incomplete electronically conducting (carbon) networks in porous carbon-containing LiFePO4 (see figure), the kinetics and rate capability of the composite are significantly improved. The key lies in the bonding properties of RuO2, which enables good contact to both the oxidic storage material as well as the carbon structures used as current collector.