Ultrathin Manganese Dioxide Nanosheets Grown on Mesoporous Carbon Hollow Spheres for High Performance Asymmetrical Supercapacitors

Author(s):  
Leicong Zhang ◽  
Xuecheng Yu ◽  
Lulu Lv ◽  
Pengli Zhu ◽  
Fengrui Zhou ◽  
...  
2019 ◽  
Vol 295 ◽  
pp. 246-252 ◽  
Author(s):  
Jianbiao Wang ◽  
Chengyu Yang ◽  
Jingjing Wang ◽  
Lijing Han ◽  
Mingdeng Wei

Nano Research ◽  
2017 ◽  
Vol 11 (1) ◽  
pp. 370-382 ◽  
Author(s):  
Manasi Jambhrunkar ◽  
Meihua Yu ◽  
Hongwei Zhang ◽  
Prasanna Abbaraju ◽  
Anand Kumar Meka ◽  
...  

2019 ◽  
Vol 48 (27) ◽  
pp. 10145-10150 ◽  
Author(s):  
Jiabin Chen ◽  
Xiaohui Liang ◽  
Wei Liu ◽  
Weihua Gu ◽  
Baoshan Zhang ◽  
...  

Mesoporous carbon hollow spheres (MCHS) were fabricated by a simple one-pot process. Their great microwave absorption properties are attributed to the outstanding impedance matching and strong dielectric loss.


ACS Nano ◽  
2016 ◽  
Vol 10 (4) ◽  
pp. 4579-4586 ◽  
Author(s):  
Hongwei Zhang ◽  
Owen Noonan ◽  
Xiaodan Huang ◽  
Yannan Yang ◽  
Chun Xu ◽  
...  

2015 ◽  
Vol 8 (1) ◽  
pp. 188-194 ◽  
Author(s):  
Se Yun Kim ◽  
Hyung Mo Jeong ◽  
Jun Ho Kwon ◽  
Il Woo Ock ◽  
Won Hyuk Suh ◽  
...  

Nickel oxide-encapsulated hollow carbon nitride spheres with multiporosity show an ∼250% enhancement in capacitance, in addition to their robust cycle life.


Small ◽  
2016 ◽  
Vol 13 (3) ◽  
pp. 1602507 ◽  
Author(s):  
Feng Hu ◽  
Hongchao Yang ◽  
Changhong Wang ◽  
Yejun Zhang ◽  
Huan Lu ◽  
...  

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1247 ◽  
Author(s):  
Yunyan Zhao ◽  
Qianyu Zhuang ◽  
Wenda Li ◽  
Hongrui Peng ◽  
Guicun Li ◽  
...  

Integrating a highly conductive carbon host and polar inorganic compounds has been widely reported to improve the electrochemical performances for promising low-cost lithium sulfur batteries. Herein, a MoS2/mesoporous carbon hollow sphere (MoS2/MCHS) structure has been proposed as an efficient sulfur cathode via a simple wet impregnation method and gas phase vulcanization method. Multi-fold structural merits have been demonstrated for the MoS2/MCHS structures. On one hand, the mesoporous carbon hollow sphere (MCHS) matrix, with abundant pore structures and high specific surface areas, could load a large amount of sulfur, improve the electronical conductivity of sulfur electrodes, and suppress the volume changes during the repeated sulfur conversion processes. On the other hand, ultrathin multi-layer MoS2 nanosheets are revealed to be uniformly distributed in the mesoporous carbon hollow spheres, enhancing the physical adsorption and chemical entrapment functionalities towards the soluble polysulfide species. Having benefited from these structural advantages, the sulfur-impregnated MoS2/MCHS cathode presents remarkably improved electrochemical performances in terms of lower voltage polarization, higher reversible capacity (1094.3 mAh g−1), higher rate capability (590.2 mAh g−1 at 2 C), and better cycling stability (556 mAh g−1 after 400 cycles at 2 C) compared to the sulfur-impregnated MCHS cathode. This work offers a novel delicate design strategy for functional materials to achieve high performance lithium sulfur batteries.


2019 ◽  
Vol 254 ◽  
pp. 312-315 ◽  
Author(s):  
Xinyu Wang ◽  
Liwen Ma ◽  
Jiachao Yang ◽  
Juncai Sun

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