Synthesis of Two-Dimensional Sr-Doped LaNiO3 Nanosheets with Improved Electrochemical Performance for EnergyStorage

Nanomaterials

卷:11

Xiaohui Song¹  Ping Liu²  Zijiong Li³  Bin Zhang⁴ 

[1] Institute of Applied Physics, Henan Academy of Sciences, Zhengzhou 450058, China;

[2] School of Electric and Information Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China;

[3] School of Physics & Electronic Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;

[4] School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China;

关键词: bimetal oxide;    nanocomposites;    supercapacitor;    energy storage;   

DOI  :  10.3390/nano11010155

来源: DOAJ

【 摘 要 】

Designing a novel, efficient, and cost-effective nanostructure with the advantage of robust morphology and outstanding conductivity is highly promising for the electrode materials of high-performance electrochemical storage device. In this paper, a series of honeycombed perovskite-type Sr-doped LaNiO₃ nanosheets with abundant porous structure were successfully synthesized by accurately controlling the Sr-doped content. The study showed that the optimal LSNO-0.4 (La_0.6Sr_0.4NiO_3-δ) electrode exhibited excellent electrochemical performance, which showed a high capacity of 115.88 mAh g⁻¹ at 0.6 A g⁻¹. Furthermore, a hybrid supercapacitor device (LSNO//AC) based on LSNO-0.4 composites and activated carbon (AC) showed a high energy density of 17.94 W h kg⁻¹, a high power density of 1600 W kg⁻¹, and an outstanding long-term stability with 104.4% capacity retention after 16,000 cycles, showing an excellent electrochemical performance and a promising application as an electrode for energy storage.

【 授权许可】

Unknown