Amorphous Ni-Mn-O microspheres with high energy density and ultralong-term stability up to 100, 000 cycles for aqueous pseudo-capacitors

被引：0

作者：

Gao, Yingxv ^{[1
]}

Ma, Qian ^{[1
]}

Xia, Xiaohong ^{[1
]}

Liu, Hongbo ^{[1
]}

机构：

[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China

来源：

JOURNAL OF POROUS MATERIALS | 2024年 / 31卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Symmetric pseudo-capacitor; Redox couples; Ultralong-term stability; High energy density; NANOSHEET ARRAYS; SUPERCAPACITOR; NANOPARTICLES; ELECTRODES;

D O I：

10.1007/s10934-023-01505-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A novel freestanding electrode of porous and amorphous NiMn1.57O4.13 microspheres is prepared for aqueous pseudo-capacitor. The NiMn1.57O4.13 microsphere has both cathodic site and anodic site so that it can be easily assembled as symmetric pseudo-capacitor, showing a great outlook for application. The SPC presents a superior stability and ability to withstand current fluctuations, which exhibits a high energy density of 122.8 Wh kg(-1) with a retention of 106.1% at 5 A g(-1) after 100,000 cycles. Moreover, the energy density is as high as 44.3 Wh kg(-1) even at the ultra-high power density of 18,750.0 W kg(-1), presenting an excellent charge/discharge rate.

引用

页码：203 / 212

页数：10