ZrO2鈥揝iO2 Nanosheets with Ultrasmall WO3 Nanoparticles and Their Enhanced Pseudocapacitance and Stability
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- 作者：Gyoung Hwa Jeong ; Hae-Min Lee ; Ji-goo Kang ; Heewoong Lee ; Chang-Koo Kim ; Jae-Hyeok Lee ; Jae-Ho Kim ; Sang-Wook Kim
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2014
- 出版时间：November 26, 2014
- 年：2014
- 卷：6
- 期：22
- 页码：20171-20178
- 全文大小：516K
- ISSN：1944-8252
文摘
We report on the first synthesis of porous ZrO2鈥揝iO2 sheets with well-defined ultrasmall WO3 nanoparticles for energy storage performance. In our system, for improving the surface deterioration of electrode, we use the ZrO2鈥揝iO2 sheets using graphene oxide as a template to access electrode substrate. The synthesized electrode with about 20 nm thickness and about 10 nm pores, has a maximum value of 313 F/g at current density of 1 A/g and a minimum value of 160 F/g at current density of 30 A/g in the specific capacitance. In addition, over 90% of its initial specific capacitance is retained when they are cycled up to 2500 cycles.