Lithium‐Niobium Triselenide Coin Cells

This is the authors' abstract. We don't add key points for this paper.

The construction and performance of rechargeable coin cells are reported. Up to 30 cycles at currents of 1 mA were obtained to a capacity cutoff of 100 mAh in hermetically sealed cells with 140 mAh theoretical capacities. A sandwich design allowed currents of as high as 10 mA at a reduced cycle life. High‐energy density cells with 300–450 mAh capacity, comparable in energy density (0.25–0.3 Wh/cm 3 ) to commercial primary cells, were constructed but cycle life was greatly reduced. The effects of elevated temperature cycling and varied electrolyte systems are discussed.