Advances in flexible energy harvesters, via converting the ambient energy into electricity, have highly motivated to realize self-powered flexible electronics. However, the requirements for higher current output have been still an urgent challenge for soft energy harvesters. Herein, we present a new type of magnetoelectric soft sphere (MSS) with a portable pluggable interface, which is capable of mechano-electrical conversion via external forces in arbitrary directions, such as hand pressing or gripping. The MSS is composed of liquid metals, magnetic Nd₂Fe₁₄B particles and Ecoflex elastomer. Notably, the MSS can break the limitation of saturated surface charge density, resulting in a current density as high as ~10 A/m². As an anti-stress ball generator, the handheld MSS when repeated compression not only successfully triggers the luminescence of a commercial red LED and the display of an LCD, but also enables the normal working of a calculator. Our study provided here will open new avenues for the design of fully-flexible energy harvesters to convert surrounding mechanical energy to electricity.

柔性能量收集器的进步，通过将环境能量转化为电能，极大地推动了实现自供电的柔性电子产品。然而，对更高电流输出的要求仍然是软能量采集器面临的紧迫挑战。在此，我们提出了一种具有便携式可插拔接口的新型磁电软球（MSS），它能够通过任意方向的外力（例如手压或抓握）进行机电转换。MSS 由液态金属、磁性 Nd ₂ Fe ₁₄ B 颗粒和 Ecoflex 弹性体组成。值得注意的是，MSS 可以打破饱和表面电荷密度的限制，导致电流密度高达 ~10 A/m ². 作为抗压球发生器，手持MSS在反复压缩时，不仅成功触发了商用红色LED的发光和LCD的显示，还能使计算器正常工作。我们在此提供的研究将为设计完全灵活的能量收集器以将周围机械能转化为电能开辟新途径。