High Discharge Energy Density at Low Electric Field Using an Aligned Titanium Dioxide/Lead Zirconate Titanate Nanowire Array.
High Discharge Energy Density at Low Electric Field Using an Aligned Titanium Dioxide/Lead Zirconate Titanate Nanowire Array.
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使用对齐的二氧化钛/锆钛酸铅纳米线阵列在低电场下实现高放电能量密度
DOI：
10.1002/advs.201700512
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发表时间：
2018-03
期刊：
影响因子：
--
通讯作者：
Luo H
中科院分区：
文献类型：
--
作者：
Zhang D;Liu W;Guo R;Zhou K;Luo H
近年来，基于高能量密度的聚合物电容器由于其在电子设备中的广泛应用而引起了极大的关注，但是，获得的高能量密度主要取决于高施加的电场，例如400-600 kV mm -1，可能带来与故障概率有关的更多挑战，这是一种简单的两步方法，用于探索二氧化钛/铅锆钛酸钛纳米线阵列提供电压应用。在低电场，即143 kV mm -1的高排放能密度为6.9 j cm -3，这归因于1 kHz时218.9的高相对介电效率和23.35 µC的高极化CM -2在此工作中获得的排放能量密度是在如此低的电场上使用的陶瓷/聚合物纳米复合材料的最高的。例如能量收集，能量存储和光催化。
Polymer‐based capacitors with high energy density have attracted significant attention in recent years due to their wide range of potential applications in electronic devices. However, the obtained high energy density is predominantly dependent on high applied electric field, e.g., 400–600 kV mm−1, which may bring more challenges relating to the failure probability. Here, a simple two‐step method for synthesizing titanium dioxide/lead zirconate titanate nanowire arrays is exploited and a demonstration of their ability to achieve high discharge energy density capacitors for low operating voltage applications is provided. A high discharge energy density of 6.9 J cm−3 is achieved at low electric fields, i.e., 143 kV mm−1, which is attributed to the high relative permittivity of 218.9 at 1 kHz and high polarization of 23.35 µC cm−2 at this electric field. The discharge energy density obtained in this work is the highest known for a ceramic/polymer nanocomposite at such a low electric field. The novel nanowire arrays used in this work are applicable to a wide range of fields, such as energy harvesting, energy storage, and photocatalysis.
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影响因子：
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