| 查看: 1018 | 回复: 0 | |||
yexuqing木虫之王 (文学泰斗)
太阳系系主任
|
[交流]
通过弛豫时间调制实现人工异质结构的高能量密度
|
|
通过弛豫时间调制实现人工异质结构的高能量密度 ▲ 作者：SANGMOON HAN, JUSTIN S. KIM, EUGENE PARK, YUAN MENG, ZHIHAO XU, ALEXANDRE C. FOUCHER, ET AL. ▲ 链接： https://www.science.org/doi/10.1126/science.adl2835 ▲ 摘要： 静电电容器因其超快的充放电能力成为先进电子器件和大功率电气系统的基础元件。铁电材料具有较高的最大极化，但高残余极化阻碍了其在储能应用中的有效部署。先前方法由于铁电材料结晶度退化而遭遇瓶颈。 研究组介绍了一种利用二维（2D）材料控制弛豫时间的方法，同时通过使用2D/3D/2D异质结构来最小化能量损失，并保持铁电3D材料的结晶度。使用该方法可实现191.7 J/cm3的能量密度，效率超过90%。 这种对弛豫时间的精确控制有望促进广泛应用，并有潜力加速高效储能系统的发展。 ▲ Abstract： Electrostatic capacitors are foundational components of advanced electronics and high-power electrical systems owing to their ultrafast charging-discharging capability. Ferroelectric materials offer high maximum polarization, but high remnant polarization has hindered their effective deployment in energy storage applications. Previous methodologies have encountered problems because of the deteriorated crystallinity of the ferroelectric materials. We introduce an approach to control the relaxation time using two-dimensional (2D) materials while minimizing energy loss by using 2D/3D/2D heterostructures and preserving the crystallinity of ferroelectric 3D materials. Using this approach, we were able to achieve an energy density of 191.7 joules per cubic centimeter with an efficiency greater than 90%. This precise control over relaxation time holds promise for a wide array of applications and has the potential to accelerate the development of highly efficient energy storage systems. |
回复此楼» 猜你喜欢
有谁可曾问过你过的还好吗？
已经有21人回复
-
E0414, 我的本子有没有希望？
已经有7人回复
-
一篇论文同时出现在两个期刊，一模一样，这算不算学术不端，请各位老师斧正。
已经有12人回复
-
希望面上有个好结果
已经有7人回复
-
三区计算机方向期刊推荐
已经有5人回复
-
sci论文二审求助
已经有5人回复
-
函评
已经有7人回复
» 本主题相关商家推荐: (我也要在这里推广)
