Extracting energy from environment vibration by piezoelectric effect to power wireless sensor nodes has been an attractive field of research, and the key challenge is to design environmentally friendly piezoelectric materials with high power density. In order to alleviate this issue, lead‐free Mn‐modified Ba_0.9Ca_0.1Ti_0.93Zr_0.07O₃ (BCTZ) ceramics were prepared, and the energy harvesting characteristics were optimized by addition of Mn ions. The results showed that the construction of R‐O‐T phase boundary and uniform dense microstructure boost the high energy harvesting characteristics at x = 0.1 specimen. In the mode of the cantilever‐type energy harvester, a high power density of 1.2 μW/mm³ and efficiency of energy conversion of 7% were obtained at x = 0.1 specimen under an acceleration of 1.0 g. In addition, the BCTZ energy harvester possesses outstanding and stable performance after a 10⁶ cycles, as well as strong toughness against severe vibration environments.

中文翻译：

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Mn改性的Ba0.9Ca0.1Ti0.93Zr0.07O3无铅能量采集器具有很高的能量转换效率

通过压电效应从环境振动中提取能量以为无线传感器节点供电一直是一个有吸引力的研究领域，而关键的挑战是设计具有高功率密度的环保型压电材料。为了缓解这一问题，制备了无铅Mn改性Ba _0.9 Ca _0.1 Ti _0.93 Zr _0.07 O ₃（BCTZ）陶瓷，并通过添加Mn离子优化了能量收集特性。结果表明，R‐O‐T相界的构造和均匀致密的微观结构增强了x处的高能量收集特性= 0.1个样本。在悬臂式能量收集器的模式下，在x = 0.1的样品下，以1.0 g的加速度获得1.2μW/ mm ³的高功率密度和7％的能量转换效率。此外，BCTZ能量收集器经过10 ⁶次循环后仍具有出色且稳定的性能，并且在恶劣的振动环境下具有很强的韧性。