| 空心海胆状二氧化锰的制备及其在超级电容器中的应用 |
| The synthesis of hollow urchin-like MnO2 via a facile hydrothermal method and its application in supercapacitors |
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| 摘要: 采用简单的一步水热法制备了空心海胆状二氧化锰，制备过程中无需任何模板剂和表面活性剂。空心海胆状二氧化锰具有3D的纳米结构，其结构稳定，由单个的二氧化锰空心管自组装而成。该纳米材料可应用于超级电容器，并且具有良好的电容性能和稳定性。在1 M 硫酸钠电解液中，扫速为1 mV s-1的条件下，该材料的比电容值为254.6 F g-1。在电流密度为1.0 A g-1的条件下，充放电循环1000次后比电容值仍保持为初始值的97.5 %。这表明其具备用作高性能超级电容器的电极材料的潜能。 |
| 关键词: 空心海胆结构、二氧化锰、超级电容器 |
| 基金项目: |
| Abstract: In this study, we described a simple hydrothermal method to synthesize hollow urchin-like manganese dioxide without any template and surfactant. 3D Hollow urchin-like manganese dioxide was consisted of single manganese dioxide tube with stable structure. This nanomaterial could be used to supercapacitor which exhibited excellent stability and capacitive properties. The specific capacity is 254.6 F g-1 in 1 M Na2SO4 electrolyte at a scan rate of 1 mV s-1. Over 97.5% of the first cycle capacitance was retained after repeating the galvanostatic charge-discharge for 1000 cycles, indicating its potential application to act as a promising electrode material for supercapacitors. |
| Keywords: hollow urchin structure MnO2 supercapacitors |
| 投稿时间：2014-02-28 修订日期：2014-09-02 |
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