Design on Polarization Distribution in All-Organic Polymer Hybrids for High Density Energy Storage
Design on Polarization Distribution in All-Organic Polymer Hybrids for High Density Energy Storage
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高密度储能用全有机聚合物杂化材料的极化分布设计
DOI：
10.1016/j.cej.2020.125052
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发表时间：
2020-08
影响因子：
15.1
通讯作者：
Yuan Deng
中科院分区：
文献类型：
--
作者：
Wentian Wei;Chen Huang;Lingyu Zhang;Yao Wang;Meiyu Xu;Yuan Deng
聚合物基介质电容器由于其高功率密度和超快的充放电速度而在先进电子学和脉冲功率系统中引起越来越多的关注。然而，最近的成果大多集中在聚合物基纳米复合材料采用高kinorganic纳米填料，产生不匹配的填料/基体界面，需要仔细修改。本文中，已经探索了全有机杂化聚合物以实现储能密度。将具有大极化的铁电性聚偏氟乙烯-三氟乙烯（P（VDF-TrFE））引入到具有小极化的聚偏氟乙烯（PVDF）中形成共混膜，并设计了PVDF和P（VDF-TrFE）/PVDF共混膜的三明治结构。在636 MV/m下，P（VDF-TrFE）/PVDF共混膜的放电能量密度（Ue）高达23.6 J/cm 3，比PVDF和P（VDF-TrFE）分别提高了55%和130%。此外，通过设计以50/50（体积比）P（VDF-TrFE）/PVDF共混膜作为中间层以提供高电位移和PVDF作为两个外层以承受高电场的三明治结构的全有机膜，已经实现了高Ue = 20-24 J/cm 3和充放电效率（>65%）。通过有限元分析深入理解了实现高介电常数的微观机制，表明铁电相在混合体系中的体积分数和介观层/层界面是至关重要的。因此，这项工作提供了一个有前途的替代策略，通过全有机薄膜设计的高密度能量存储。
Polymer-based dielectric capacitors have attracted increasing attention in advanced electronics and pulsed power systems due to their high power density and ultrafast charge–discharge speed. However, most of recent achievements focus on polymer-based nanocomposites employing high-kinorganic nanofillers, generating mismatched filler/matrix interfaces that need careful modification. Herein, all-organic hybrid polymers have been explored to achieve ultrahigh energy storage density. Ferroelectric poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) with large polarization was introduced into poly(vinylidene fluoride) (PVDF) with smaller polarization forming blend films, and next sandwich structures constructed by PVDF and P(VDF-TrFE)/PVDF blend films were elaborately designed. A high discharge energy density (Ue) of 23.6 J/cm3at 636 MV/m has been achieved in 30/70 (volume ratio) P(VDF-TrFE)/PVDF blend film, which is 55% and 130% higher than that of PVDF and P(VDF-TrFE), respectively. Further, by designing sandwich structured all-organic films with 50/50 (volume ratio) P(VDF-TrFE)/PVDF blend film as middle layer to provide high electric displacement and PVDF as two outer layers to withstand high electric field, highUe= 20–24 J/cm3and charge–discharge efficiency (>65%) have been achieved. In-depth understanding on the microscopic mechanism for achieving highUeis gained via finite element analysis showing that the volume fraction of ferroelectric phase in the hybrid system and the mesoscopic layer/layer interfaces are crucial. This work thus provides a promising alternative strategy for high-density energy storage via all-organic films design.
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影响因子：
4
作者：
L. Millière;K. Makasheva;C. Laurent;B. Despax;G. Teyssèdre
通讯作者：
L. Millière;K. Makasheva;C. Laurent;B. Despax;G. Teyssèdre
影响因子：
9.5
作者：
A. Sultana;Priyabrata Sadhukhan;Md. Mehebub Alam;Sachindranath Das;T. Middya;D. Mandal
通讯作者：
A. Sultana;Priyabrata Sadhukhan;Md. Mehebub Alam;Sachindranath Das;T. Middya;D. Mandal
影响因子：
2.1
作者：
Barshaw, E. J.;White, J.;Rabuffi, M.
通讯作者：
Rabuffi, M.
平行和正交配置双壳结构 BZCT 纳米纤维增强 P(VDF-TrFE-CFE) 基复合材料的储能
影响因子：
17.6
作者：
Zhang Yue;Zhang Changhai;Feng Yu;Zhang Ti;ong;Chen Qingguo;Chi Qingguo;Liu Lizhu;Wang Xuan;Lei Qingquan
通讯作者：
Lei Qingquan
影响因子：
11.9
作者：
Chen, Jie;Wang, Yifei;Wang, Hong
通讯作者：
Wang, Hong