TiN Paper for Ultrafast-Charging Supercapacitors

• DOI: 10.1007/s40820-019-0340-7
• Publication Date: 2019-12-10T08:02:59Z
• Authors: Bin Yao; Mingyang Li; Jing Zhang; Lei Zhang; Yu Song; Wang Xiao; Andrea Cruz; Yexiang Tong; Yat Li
• Keywords: Paper-like electrode; Technology; Wide voltage window; TiN; T; Supercapacitors; Ultrafast charging; 01 natural sciences; 7. Clean energy; Article; 0104 chemical sciences

Abstract Ultrafast-charging energy storage devices are attractive for powering personal electronics and electric vehicles. Most ultrafast-charging made of carbonaceous materials such as chemically converted graphene carbon nanotubes. Yet, their relatively low electrical conductivity may restrict performance at ultrahigh charging rate. Here, we report the fabrication a porous titanium nitride (TiN) paper an alternative electrode material devices. The TiN shows excellent 3.67 × 10 4 S m −1 , which is considerably higher than most carbon-based electrodes. paper-like structure also contains combination large pores between interconnected nanobelts mesopores within nanobelts. This unique enables fast by simultaneously providing efficient ion diffusion electron transport. supercapacitors (SCs) enable charging/discharging scan rate 100 V s in wide voltage window 1.5 Na 2 SO neutral electrolyte. It has outstanding response time with characteristic constant ms. Significantly, paper-based SCs show zero capacitance loss after 200,000 cycles, much better stability reported other metal SCs. Furthermore, device great promise scalability. filtration method good control thickness mass loading electrodes