Hierarchical Ni(OH)₂ nanotubes with ultrathin nanoflakes were successfully synthesized by a self-sacrificial template via a facile solvothermal method. The as-prepared Ni(OH)₂ nanotubes exhibit a high specific capacitance of 1319 F g⁻¹ at 3 A g⁻¹, and retain 700 F g⁻¹ (79.3% of the initial capacitance) at 5 A g⁻¹ after 7000 cycles.

中文翻译：

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高性能超级电容器的分层氢氧化镍纳米管的可控合成

通过自溶模板通过溶剂热法成功合成了具有超薄纳米薄片的Ni（OH）₂纳米管。所制备的Ni（OH）₂纳米管在3 A g ^-1下显示出1319 F g ^-1的高比电容，并且在5 A g ^-1后保留700 F g ^-1（初始电容的79.3％）。7000个周期。