In this work, alloy-based anodes on the basis of germanium and tin for lithium-ion-batteries are prepared and electrochemically tested. Starting from the Zintl phases K4Sn9, K4Ge9 und K4Ge5Sn4, inverse opal structured thin films were prepared by application of various wet-chemical synthetic strategies. Doping experiments were conducted in order to tune the properties of the resulting thin films. Germanium anodes showed high capacities and stability towards charge-discharge cycling, making them a promising candidate for long-lifetime applications. Transfer to phosphorus films based on K3P7 is discussed.
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In this work, alloy-based anodes on the basis of germanium and tin for lithium-ion-batteries are prepared and electrochemically tested. Starting from the Zintl phases K4Sn9, K4Ge9 und K4Ge5Sn4, inverse opal structured thin films were prepared by application of various wet-chemical synthetic strategies. Doping experiments were conducted in order to tune the properties of the resulting thin films. Germanium anodes showed high capacities and stability towards charge-discharge cycling, making them a...
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