Effect of hydrogen atoms on potassium-ion electrets used in vibration-powered generators
Effect of hydrogen atoms on potassium-ion electrets used in vibration-powered generators
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氢原子对振动发电机中使用的钾离子驻极体的影响
DOI：
10.1016/j.mssp.2022.107306
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发表时间：
2023
影响因子：
4.1
通讯作者：
Shiraishi Kenji
中科院分区：
文献类型：
--
作者：
Ohata Yoshiki;Araidai Masaaki;Ishiguro Takuma;Mitsuya Hiroyuki;Toshiyoshi Hiroshi;Shibata Yasushi;Hashiguchi Gen;Shiraishi Kenji
钾离子驻极体主要由无定形二氧化硅和钾原子组成，可以积累负电荷，有望用于未来的振动发电机。根据先前的研究，负电荷的积累的起源被揭示为与SiO 5结构在无定形二氧化硅中的存在有关。一般来说，Si-O键是如此稳定，钾离子驻极体预计将保持高电位比以前研究的材料，因此正在深入研究的实际应用。然而，在以前的实验中观察到电荷衰减现象，这带来了严重的问题。在这项研究中，我们专注于氢的作用，这被认为是电荷衰减的来源之一，并研究了钾离子驻极体中的氢的行为和电荷衰减的机制，使用第一性原理计算。结果表明，氢原子的存在会使钾离子驻极体产生带正电荷的特征局域结构或破坏SiO 5结构，从而降低驻极体的负电荷存储能力。
Potassium-ion electrets, which are mainly composed of amorphous silica and potassium atoms, can accumulate negative charges and are expected to be useful for future vibration powered generators. According to previous research, the origin of the accumulation of negative charges was revealed to be related to the presence of SiO5structures in amorphous silica. In general, Si–O bonds are so stable that potassium-ion electrets are expected to retain a high electric potential longer than previously studied materials and are therefore being studied intensively for practical use. However, charge decay phenomena were observed in previous experiments, and this presents serious problems. In this study, we focus on the role of hydrogen which is considered to be one of the origins of charge decay and have investigated the behavior of hydrogen in potassium-ion electrets and the mechanism of the charge decay using first-principles calculations. As a result, we found that hydrogen atoms can create a positively charged characteristic local structure or break SiO5structures and therefore cause degradation of the negative charge storing ability of potassium-ion electrets.
碳原子对振动发电机用钾离子驻极体可靠性的影响
影响因子：
1.5
作者：
Yoshiki Ohata;M. Araidai;Y. Shibata;G. Hashiguchi;K. Shiraishi
通讯作者：
K. Shiraishi
具有薄膜驻极体的静电振动 MEMS 能量收集器
DOI：
10.1380/vss.63.223
发表时间：
2020
期刊：
--
影响因子：
--
作者：
H. Toshiyoshi;H. Honma;H. Mitsuya;G. Hashiguchi
通讯作者：
G. Hashiguchi