3D printing of carbon tile-modulated well-interconnected hierarchically porous pseudocapacitive electrode

被引:35
作者
Yang, Zhengpeng [1 ]
Yang, Xinyin [1 ,2 ]
Yang, Tingting [1 ,2 ]
Cao, Yufang [2 ,3 ,4 ,5 ]
Zhang, Chunjing [1 ]
Zhang, Yongyi [2 ,3 ,4 ,5 ]
Li, Ping [1 ]
Yang, Junfei [1 ,2 ]
Ma, Yuyan [1 ,2 ]
Li, Qingwen [2 ,3 ]
机构
[1] Henan Polytech Univ, Henan Key Lab Mat Deep Earth Engn, Sch Mat Sci & Engn, Jiaozuo 454003, Peoples R China
[2] Suzhou Inst Nanotech & Nanob, Chinese Acad Sci, Adv Mat Div, Key Lab Multifunct Nanomat & Smart Syst, Suzhou 215123, Peoples R China
[3] Univ Sci & Technol China, Sch Nanotech & Nanobion, Hefei 230026, Peoples R China
[4] Jiangxi Inst Nanotechnol, Div Nanomat, Nanchang 330200, Peoples R China
[5] Jiangxi Inst Nanotechnol, Jiangxi Key Lab Carbonene Mat, Nanchang 330200, Peoples R China
基金
中国国家自然科学基金;
关键词
Carbon tile; 3D printing; Well-interconnected hierarchical pores; Ultrahigh mass loading; Asymmetric supercapacitor; MICRO-SUPERCAPACITORS; ENERGY-DENSITY; MICROSUPERCAPACITORS; PERFORMANCE; FILMS;
D O I
10.1016/j.ensm.2022.10.025
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Pseudocapacitive electrode architecture with well-interconnected open pores is essential and critical to the high -performance energy storage. However, challenges remain pertaining to consistent and scalable manufacturing, as well as fast ion/electron transport, especially at a high mass loading of active materials. Herein, with kapok-derived proper-curved quasi-2D carbon tile (CT) featuring thin wall and high microporosity as unique skel-eton support, a novel pseudocapacitive CT-single-wall carbon nanotube (SWNT)-NiCo2O4 electrode was con-structed via a scalable and controllable extrusion-based 3D printing strategy. The resulting 3D-printed electrode demonstrated abundant well-interconnected hierarchical pores and continuous conductive network built by coupling CTs and SWNTs, thereby enabling uniform and high mass loading of active NiCo2O4 (31 mg cm-2), and meanwhile guaranteeing unimpeded channels and adequate pathways acting as "superhighways" for ultrafast ion diffusion and electron transport throughout the entire device. Benefiting from these prominent features, an asymmetric supercapacitor assembled with 3D-printed CT-modulated electrode delivered high specific capaci-tance (588 mF cm-2) and energy density (138 mu Wh cm-2), exceptional long-term cycling stability (82% after 50000 cycles), and superior capacity even at large electrode thickness. This work has shed light on new strategies for fabricating rational pseudocapacitive electrode architectures toward high-capacity, rapidly cycling devices.
引用
收藏
页码:51 / 59
页数:9
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