当前位置：
X-MOL 学术
›
ACS Energy Lett.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
High-Mass-Loading Porous Ti3C2Tx Films for Ultrahigh-Rate Pseudocapacitors
ACS Energy Letters ( IF 19.3 ) Pub Date : 2020-06-15 , DOI: 10.1021/acsenergylett.0c00704 Jing Kong 1 , Huachao Yang 1, 2 , Xinzheng Guo 1 , Shiling Yang 1 , Zhesong Huang 1 , Xinchao Lu 1 , Zheng Bo 1, 2 , Jianhua Yan 1 , Kefa Cen 1 , Kostya Ken Ostrikov 1, 3, 4
ACS Energy Letters ( IF 19.3 ) Pub Date : 2020-06-15 , DOI: 10.1021/acsenergylett.0c00704 Jing Kong 1 , Huachao Yang 1, 2 , Xinzheng Guo 1 , Shiling Yang 1 , Zhesong Huang 1 , Xinchao Lu 1 , Zheng Bo 1, 2 , Jianhua Yan 1 , Kefa Cen 1 , Kostya Ken Ostrikov 1, 3, 4
Affiliation
|
Mass production of ordered and porous three-dimensional (3D) electrodes is a crucial prerequisite for practical energy storage devices. MXenes have drawn considerable attention as pseudocapacitive materials for outstanding electric conductivity and surface redox reactions; however, they face challenges for achieving 3D porous architectures especially at high mass loadings. Herein we propose a reduced-repulsion freeze-casting assembly concept via interlayer interaction engineering for constructing 3D porous Ti3C2Tx films, wherein interlayer repulsion is minimized via less electronegative functional groups and charge screening effect based on quantum calculations. 3D Ti3C2Tx films deliver a capacitance of 207.9 F g–1 at 10 V s–1, which demonstrates 58.6% capacitance retention with a 1000-fold scan rate increase. The capacitive performance is almost independent of electrode mass loading up to 16.18 mg cm–2, exhibiting ultrahigh areal capacitance of 3731 mF cm–2 and energy density of 336.7 μWh cm–2.
中文翻译：
用于超高速伪电容器的高载荷多孔Ti 3 C 2 T x薄膜
有序和多孔的三维（3D）电极的批量生产是实用储能设备的关键先决条件。MXene作为具有优异导电性和表面氧化还原反应的拟电容材料已引起了广泛的关注。但是，它们面临着实现3D多孔结构的挑战，尤其是在高负载下。在本文中，我们提出了一种通过层间相互作用工程减少排斥的冻结浇铸装配概念，以构造3D多孔Ti 3 C 2 T x膜，其中基于量子计算，通过较少的负电性官能团和电荷屏蔽效应，使层间排斥最小化。3D钛3 C 2 T x薄膜在10 V s -1时提供207.9 F g –1的电容，这表明电容保持率为58.6％，扫描速率提高了1000倍。电容性能几乎与最大负载为16.18 mg cm -2的电极质量无关，具有3731 mF cm -2的超高面积电容和336.7μWhcm -2的能量密度。
更新日期：2020-07-10
中文翻译：
用于超高速伪电容器的高载荷多孔Ti 3 C 2 T x薄膜
有序和多孔的三维（3D）电极的批量生产是实用储能设备的关键先决条件。MXene作为具有优异导电性和表面氧化还原反应的拟电容材料已引起了广泛的关注。但是，它们面临着实现3D多孔结构的挑战，尤其是在高负载下。在本文中，我们提出了一种通过层间相互作用工程减少排斥的冻结浇铸装配概念，以构造3D多孔Ti 3 C 2 T x膜，其中基于量子计算，通过较少的负电性官能团和电荷屏蔽效应，使层间排斥最小化。3D钛3 C 2 T x薄膜在10 V s -1时提供207.9 F g –1的电容，这表明电容保持率为58.6％，扫描速率提高了1000倍。电容性能几乎与最大负载为16.18 mg cm -2的电极质量无关，具有3731 mF cm -2的超高面积电容和336.7μWhcm -2的能量密度。
京公网安备 11010802027423号