我组汪慧在Nano Research上发表论文

题目：

Carbon dots modified Ti₃C₂Tx-based fibrous supercapacitor with photo-enhanced capacitance

作者：

Hui Wang^1,§, Jingjing Cao^1,§, Yunjie Zhou¹, Xiao Wang¹, Hui Huang¹, Yang Liu¹, Mingwang Shao¹, and Zhenhui Kang^1,2

单位：

¹ Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren’ai Road, Suzhou 215123, China

² Macau Institute of Materials Science and Engineering, Macau University of Science and Technology, Taipa 999078, Macau SAR, China

摘要：

The energy crisis has always been a widely concerned problem. It is an urgent need for green and renewable energy technologies to achieve sustainable development, and the photo-assisted charging energy storage devices provide a new way to realize the sustainable utilization of solar energy. Here, we fabricated a photo-assisted charging fibrous supercapacitor (NM₂P₁) with Ti₃C₂Tx-based hybrid fibre modified by nitrogen-doped carbon dots (NCDs). The NM2P1 fibre provides a volumetric capacitance of 1,445 F.cm^-3 (630 F.g^-1) at 10 A.cm^-3 under photo-assisted charging, which increases by 35.9% than that of dark condition (1,063 F.cm^-3/464 F.g^-1). Furthermore, the NM₂P₁ fibrous supercapacitor device shows that the maximum volumetric energy density and volumetric power density are 18.75 mWh.cm^-3 and 8,382 mW.cm^-3. Notably, the transient photovoltage (TPV) test was used to further confirm that NCDs as a photosensitizer enhance the light absorption capacity and faster charge transfer kinetics of NM₂P₁ fibre. This work directly exploits solar energy to improve the overall performance of supercapacitor, which opens up opportunities for the utilization of renewable energy and the development of photosensitive energy equipment.

影响因子：

8.183

分区情况：

1区

链接：  

https://link.springer.com/article/10.1007/s12274-021-3309-z