Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8014200 | Materials Letters | 2018 | 10 Pages |
Abstract
Ruddlesden-Popper type La2NiO4+δ (LNO) oxide was investigated as a novel pseudocapacitive electrode and performed high performance with the capacitance of 657.4â¯Fâ¯gâ1 under the scan rate of 2â¯mVâ¯sâ1 in 3â¯M KOH electrolyte. Two cathodic peaks and one anodic peak in CV curves of LNO in KOH electrolyte indicate the special oxygen insertion/extrusion processes because its structure alternates with perovskite LaNiO3 layers and LaO rock-salt layers in succession. Cycle performance of LNO at a relatively high current density of 10â¯Aâ¯gâ1 is approximately 96.2% after 500 cycles in 3â¯M KOH electrolyte, showing good cycling stability. This confirms LNO as a potential candidate for high performance pseudocapacitor electrodes.
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Authors
Zhongsheng Sang, Wei Che, Shengbing Yang, Yihui Liu,