Wide Temperature All-Solid-State Ti3C2Tx Quantum Dots/L-Ti3C2Tx Fiber Supercapacitor with High Capacitance and Excellent Flexibility,Advanced Science

当前位置： X-MOL 学术 › Adv. Sci. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Wide Temperature All-Solid-State Ti3C2Tx Quantum Dots/L-Ti3C2Tx Fiber Supercapacitor with High Capacitance and Excellent Flexibility
Advanced Science ( IF 14.3 ) Pub Date : 2023-12-13 , DOI: 10.1002/advs.202305991
Juan He _{1,

2,

3} , Fuquan Ma _{1,

2,

3} , Wenpu Xu _{1,

2,

3} , Xuexia He _{2,

3} , Qi Li _{2,

3} , Jie Sun _{2,

3} , Ruibin Jiang _{2,

3} , Zhibin Lei _{1,

2,

3} , Zong-Huai Liu _{1,

2,

3}

Affiliation

Ti₃C₂T_x Quantum dots (QDs)/L-Ti₃C₂T_x fiber electrode (Q₃M₇) with high capacitance and excellent flexibility is prepared by a wet spinning method. The assembled units Ti₃C₂T_x nanosheets (NSs) with large size (denoted as L-Ti₃C₂T_x) is obtained by natural sedimentation screen raw Ti₃AlC₂, etching, and mechanical delamination. The pillar agent Ti₃C₂T_x QDs is fabricated by an ultrasound method. Q₃M₇ fiber electrode gave a specific capacitance of 1560 F cm⁻³, with a capacity retention rate of 79% at 20 A cm⁻³, and excellent mechanical strength of 130 Mpa. A wide temperature all-solid-state the delaminated montmorillonite (F-MMT)/Polyvinyl alcohol (PVA) dimethyl sulfoxide (DMSO) flexible hydrogel (DHGE) (F-MMT/PVA DHGE) Q₃M₇ fiber supercapacitor is assembled by using Q₃M₇ fiber as electrodes and F-MMT/PVA DHGE as electrolyte and separator. It showed a volume specific capacitance of 413 F cm⁻³ at 0.5 A cm⁻³, a capacity retention of 97% after 10 000 cycles, an energy density of 36.7 mWh cm⁻³ at a power density of 311 mW cm⁻³, and impressive capacitance and flexibility over a wide temperature range of −40 to 60 °C. This work provides an effective strategy for designing and assembling wide temperature all-solid-state fiber supercapacitors with optimal balance of capacitive performance and flexibility.

中文翻译：

高电容、优异柔性的宽温全固态Ti3C2TX量子点/L-Ti3C2TX光纤超级电容器

采用湿纺法制备了具有高电容和优异柔韧性的Ti ₃ C ₂ T _x量子点（QDs）/L-Ti ₃ C ₂ T _x纤维电极（Q ₃ M ₇ ）。通过自然沉降筛原料Ti ₃ AlC ₂ 、刻蚀和机械分层得到大尺寸组装单元Ti ₃ C ₂ T _x纳米片(NSs)(记为L-Ti ₃ C ₂ T _x )。柱剂Ti ₃ C ₂ T _x QDs是通过超声方法制备的。 Q ₃ M ₇纤维电极的比电容为1560 F cm ^-3 ，20 A cm ^-3下的容量保持率为79%，机械强度优异，为130 Mpa。采用分层蒙脱土（F-MMT）/聚乙烯醇（PVA）二甲亚砜（DMSO）柔性水凝胶（DHGE）（F-MMT/PVA DHGE）Q ₃ M ₇纤维超级电容器组装而成的宽温全固态Q 3 M 7 纤维超级电容器Q ₃ M ₇纤维作为电极，F-MMT/PVA DHGE 作为电解质和隔膜。其在0.5 A cm ^-3下的体积比电容为413 F cm ^-3 ，10000次循环后的容量保持率为97%，在功率密度为311 mW cm ^-3时的能量密度为36.7 mWh cm ^-3 ，在−40 至 60 °C 的宽温度范围内具有令人印象深刻的电容和灵活性。这项工作为设计和组装宽温全固态纤维超级电容器提供了一种有效的策略，具有电容性能和灵活性的最佳平衡。

更新日期：2023-12-13

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南