Flexible high-temperature dielectric materials from polymer nanocomposites

材料科学 氮化硼 纳米复合材料 电介质 数码产品 复合材料 储能 聚合物纳米复合材料 电容感应 陶瓷 光电子学 电气工程 功率(物理) 工程类 量子力学 物理
作者
Qi Li,Lei Chen,Matthew R. Gadinski,Shihai Zhang,Guangzu Zhang,Haoyu U. Li,Elissei Iagodkine,Aman Haque,Long‐Qing Chen,Thomas N. Jackson,Qing Wang
出处
期刊:Nature [Springer Nature]
卷期号:523 (7562): 576-579 被引量:1684
标识
DOI:10.1038/nature14647
摘要

Dielectric materials, which store energy electrostatically, are ubiquitous in advanced electronics and electric power systems. Compared to their ceramic counterparts, polymer dielectrics have higher breakdown strengths and greater reliability, are scalable, lightweight and can be shaped into intricate configurations, and are therefore an ideal choice for many power electronics, power conditioning, and pulsed power applications. However, polymer dielectrics are limited to relatively low working temperatures, and thus fail to meet the rising demand for electricity under the extreme conditions present in applications such as hybrid and electric vehicles, aerospace power electronics, and underground oil and gas exploration. Here we describe crosslinked polymer nanocomposites that contain boron nitride nanosheets, the dielectric properties of which are stable over a broad temperature and frequency range. The nanocomposites have outstanding high-voltage capacitive energy storage capabilities at record temperatures (a Weibull breakdown strength of 403 megavolts per metre and a discharged energy density of 1.8 joules per cubic centimetre at 250 degrees Celsius). Their electrical conduction is several orders of magnitude lower than that of existing polymers and their high operating temperatures are attributed to greatly improved thermal conductivity, owing to the presence of the boron nitride nanosheets, which improve heat dissipation compared to pristine polymers (which are inherently susceptible to thermal runaway). Moreover, the polymer nanocomposites are lightweight, photopatternable and mechanically flexible, and have been demonstrated to preserve excellent dielectric and capacitive performance after intensive bending cycles. These findings enable broader applications of organic materials in high-temperature electronics and energy storage devices.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
罗_应助科研通管家采纳,获得10
刚刚
领导范儿应助科研通管家采纳,获得10
刚刚
斯文败类应助科研通管家采纳,获得10
刚刚
罗_应助科研通管家采纳,获得10
刚刚
JamesPei应助科研通管家采纳,获得10
1秒前
1秒前
1秒前
Raylihuang应助闵问柳采纳,获得20
4秒前
张三发布了新的文献求助10
5秒前
冯小逢完成签到,获得积分10
7秒前
闵问柳完成签到,获得积分10
9秒前
10秒前
冯小逢发布了新的文献求助20
12秒前
YELLOW完成签到,获得积分10
13秒前
14秒前
林夕完成签到,获得积分10
14秒前
雷锋完成签到,获得积分10
15秒前
afterly发布了新的文献求助10
15秒前
sdh完成签到,获得积分10
17秒前
星辰大海应助布丁采纳,获得10
17秒前
18秒前
18秒前
陈圈圈发布了新的文献求助10
19秒前
蹦跶蹦跶呆完成签到,获得积分10
22秒前
Linyi发布了新的文献求助10
22秒前
邱曾烨发布了新的文献求助10
23秒前
王灰灰1完成签到 ,获得积分10
24秒前
25秒前
坐等时光看轻自己完成签到,获得积分10
25秒前
25秒前
28秒前
布丁发布了新的文献求助10
29秒前
小可几何发布了新的文献求助10
29秒前
31秒前
Noob_saibot发布了新的文献求助10
32秒前
lfl发布了新的文献求助10
34秒前
淇Q发布了新的文献求助10
34秒前
陈龙艳发布了新的文献求助10
36秒前
FashionBoy应助冯小逢采纳,获得10
37秒前
凶狠的盛男完成签到 ,获得积分10
38秒前
高分求助中
Sustainability in Tides Chemistry 2800
Kinetics of the Esterification Between 2-[(4-hydroxybutoxy)carbonyl] Benzoic Acid with 1,4-Butanediol: Tetrabutyl Orthotitanate as Catalyst 1000
The Young builders of New china : the visit of the delegation of the WFDY to the Chinese People's Republic 1000
Rechtsphilosophie 1000
Bayesian Models of Cognition:Reverse Engineering the Mind 888
Handbook of Qualitative Cross-Cultural Research Methods 600
Very-high-order BVD Schemes Using β-variable THINC Method 568
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3137511
求助须知:如何正确求助?哪些是违规求助? 2788516
关于积分的说明 7786944
捐赠科研通 2444783
什么是DOI,文献DOI怎么找? 1300018
科研通“疑难数据库(出版商)”最低求助积分说明 625770
版权声明 601023