A unique electrode architecture consisting of Ni₃Se₂ nanosheet-on-Ni₃Se₂-nanoforests grown on nickel foam was obtained by a simple one-step solvothermal method, which subsequently used as a free-standing electrode for supercapacitor. The Ni₃Se₂ exhibited a high capacity of up to 600 μAh cm⁻² at 3 mA cm⁻², excellent rate capability and cycling stability at high cycling rates. Impressively, the optimized hybrid supercapacitor containing Ni₃Se₂ cathode still released 94.4% of initial capacity for 505 μAh cm⁻² after 6000 cycles at 20 mA cm⁻². The results suggest that the Ni₃Se₂ nanoforests developed electrode has great potential for practical applications in hybrid supercapacitors.

通过简单的一步溶剂热法获得了一种独特的电极结构，该结构由在镍泡沫上生长的Ni ₃ Se ₂纳米片-Ni ₃ Se _2-纳米林组成，随后被用作超级电容器的独立式电极。在Ni ₃硒₂显示出高达600μAh厘米的高容量^-2以3mA厘米^-2，优异的倍率性能和循环稳定性在高循环速率。令人印象深刻的，含有Ni优化混合超级电容器₃硒₂阴极仍然释放的初始容量94.4％对505μAh厘米^-2 6000次循环后在20mA厘米^-2。结果表明，Ni ₃ Se ₂纳米林开发的电极在混合超级电容器中具有实际应用的巨大潜力。