There is abundance of low-frequency biomechanical and blue energy that can be harvested from our ambient environment. Utilization of these energy plays a significant role for the sustainability of the wearable devices and environmental monitoring devices. Here, we presented a rotational pendulum triboelectric-electromagnetic hybrid generator (RPHG) which is able to scavenge low-frequency (<5 Hz) vibration energy from both arbitrary human motion and ocean waves. Four stacked disk-shaped rotor magnets are introduced into the generator for the rotational motion. The pendulum rotor can easily rotate around the bearing by gravity or inertia force with a broadband frequency excitation, and coupled with surrounding coils to operate electromagnetic generator (EMG). In the meantime, triboelectric nanogenerator (TENG) is realized by utilizing the rotor to trigger the contact-separation mode of the copper ring and surrounding fluorinated ethylene propylene (FEP) film. The hybridized generator is very sensitive to irregular human motion and ultra-low-frequency ocean waves. After the optimization of the configuration of the hybrid generator, the maximum power density of 3.25 W/m² and 79.9 W/m² are obtained at a driving frequency of 2 Hz and amplitude of 14 cm by the TENG and EMG, respectively, which can charge a capacitor of 22 μF to 7 V rapidly in 30 s. The RPHG can light up about more than hundreds of commercial lights emitting diodes (LEDs). Then, the RPHG was placed on human body and tested by running on treadmill and rope skipping. The open-circuit voltage of the EMG can be about 9 V and that of TENG can reach 150 V. Finally, the RPHG was tested on a homemade buoy in Tai Lake. When the wave frequency is about 1 Hz and the wave height is 20 cm, the open-circuit voltage of EMG can reach over 3 V and that of TENG can reach 80 V regardless of whether the RPHG is placed vertically or horizontally. Generally, the proposed device demonstrates the effectiveness towards energy harvesting from ambient environment of multidirectional and wide frequency range, i.e., human motion and blue energy, showing the great potential of being a sustainable power source for those wearable devices and monitoring devices in blue ocean.

可以从我们周围的环境中获取大量的低频生物力学和蓝色能量。这些能量的利用对于可穿戴设备和环境监测设备的可持续性起着重要作用。在这里，我们介绍了一种旋转摆式摩擦电磁混合发电机（RPHG），它能够从任意人类运动和海浪中清除低频（<5 Hz）的振动能量。将四个堆叠的盘形转子磁体引入发电机中以进行旋转运动。摆锤可以通过重力或惯性力在宽带频率激励下轻松地围绕轴承旋转，并与周围的线圈耦合以操作电磁发电机（EMG）。同时，利用转子触发铜环与周围的氟化乙烯丙烯（FEP）膜的接触分离模式，实现了摩擦生电纳米发电机（TENG）。混合发电机对人类不规则运动和超低频海浪非常敏感。优化混合动力发电机的配置后，最大功率密度为3.25 W / m²和79.9 W / m ²TENG和EMG分别在2 Hz的驱动频率和14 cm的振幅下获得了它们，它们可以在30 s内迅速将22μF的电容器充电至7V。RPHG可以点亮大约数百种商用发光二极管（LED）。然后，将RPHG放在人体上并通过在跑步机上运行和跳绳进行测试。EMG的开路电压可以达到9 V，TENG的开路电压可以达到150V。最后，RPHG在太湖的一个自制浮标上进行了测试。当波频率为1 Hz且波高为20 cm时，无论RPHG是垂直放置还是水平放置，EMG的开路电压都可以超过3 V，TENG的开路电压可以达到80V。一般来说，