Inspired by nature, both high-performance Si/C and activated carbon (AC) energy storage materials with a hierarchically biomimetic structure can be prepared from rice husks (RHs), and further serve as promising anode and cathode materials for hybrid lithium-ion capacitors (LICs), respectively. Benefitting from the high capacity and good rate and cycling performances of the Si/C anode material and RH-derived AC (RAC) cathode material, the designed Si/C||RAC LICs give a high energy density of 227 W h kg⁻¹ at a power density of 1146 W kg⁻¹, and ∼181 W h kg⁻¹ can still be retained even at an ultra-high power density of ∼32 595 W kg⁻¹. Furthermore, the RH-derived LICs also show a long-term cycling stability (16 000 cycles at ∼16 800 W kg⁻¹).

中文翻译：

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稻壳衍生的具有超高能量的混合锂离子电容器

受自然界启发，具有分层仿生结构的高性能Si / C和活性炭（AC）储能材料都可以从稻壳（RH）制备，并且还可以用作混合锂离子电容器的有希望的阳极和阴极材料（LICs）。得益于Si / C阳极材料和RH衍生的AC（RAC）阴极材料的高容量，良好的速率和循环性能，设计的Si / C || RAC LICs具有227 W h kg ^-1的高能量密度在1146的功率密度钨千克^-1，和~181 W时千克^-1仍可甚至为W公斤~32 595的超高功率密度被保留^-1。此外，源自RH的LIC还显示出长期的循环稳定性（在〜16 800 W kg时为1.6万次循环）^-1）。