| 长循环寿命结晶@非结晶金属硫化物复合电极材料的制备及其混合电容器性能 | |
| Crystalline and amorphous metal sulfide composite electrode materials with long cycle life: Preparation and performance of hybrid capacitors | |
| 摘要: 通过乙二醇诱导策略成功地设计和构建了结晶@非结晶NiCo2S4@MoS2(v-NCS@MS)纳米结构，利用非结晶MoS2壳层的柔性保护和带缺陷的内部核NiCo2S4的高比容量，使v-NCS@MS电极具有高比容量(1 A·g-1时1 034 mAh·g-1)和出色的倍率性能。此外，以v-NCS@MS为正极、活性炭(AC)为负极组装的混合超级电容器在219 W·kg-1的比功率下可获得111 Wh·kg-1的高比能量，在不同电流密度下循环15 000次后容量保持率高达80.5%。 | |
| 关键词: 结晶@非结晶异质结构 NiCo2S4@MoS2 混合型超级电容器 缺陷调控 长循环寿命 | |
| 基金项目: 吉林省教育厅科学技术研究项目(No.JJKH20230295KJ)资助。 | |
| Abstract: Crystalline@amorphous NiCo2S4@MoS2 (v-NCS@MS) nanostructures were designed and constructed via an ethylene glycol-induced strategy with hydrothermal synthesis and solvothermal method, which simultaneously realized the defect regulation of crystal NiCo2S4 in the core. Taking advantage of the flexible protection of an amor-phous shell and the high capacity of a conductive core with defects, the v-NCS@MS electrode exhibited high specific capacity (1 034 mAh·g-1 at 1 A·g-1) and outstanding rate capability. Moreover, a hybrid supercapacitor was assembled with v-NCS@MS as cathode and activated carbon (AC) as anode, which can achieve remarkably high specific energy of 111 Wh·kg-1 at a specific power of 219 W·kg-1 and outstanding capacity retention of 80.5% after 15 000 cycling at different current densities. | |
| Keywords: crystalline@amorphous heterostructure NiCo2S4@MoS2 hybrid supercapacitor defect design long cycle life | |
| 投稿时间：2024-04-26 修订日期：2024-06-13 | |
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| 丁宁,王思宇,于世华,徐鹏程,韩丹丹,石德鑫,张超.长循环寿命结晶@非结晶金属硫化物复合电极材料的制备及其混合电容器性能[J].无机化学学报,2024,40(9):1784-1794. | |
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| Support information: 相关附件： 20240146_20240146-SI.doc | |
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