• 文献标题:   Architectured Leaf-Inspired Ni0.33Co0.66S2/Graphene Aerogels via 3D Printing for High-Performance Energy Storage
  • 文献类型:   Article
  • 作  者:   TANG XW, ZHU CL, CHENG DD, ZHOU H, LIU XH, XIE PW, ZHAO QB, ZHANG D, FAN TX
  • 作者关键词:   3d printing, electrochemical energy storage, high mass loading, leafinspired material, nickel cobalt sulfide/graphene aerogel
  • 出版物名称:   ADVANCED FUNCTIONAL MATERIALS
  • ISSN:   1616-301X EI 1616-3028
  • 通讯作者地址:   Shanghai Jiao Tong Univ
  • 被引频次:   6
  • DOI:   10.1002/adfm.201805057
  • 出版年:   2018

▎ 摘  要

The construction of high-performance electrodes with sufficient active sites and interconnected networks for rapid electron/ions transport is challengeable for energy storage devices. Inspired by natural leaves, a facile 3D-printing strategy for constructing architected Ni0.33Co0.66S2/graphene (3DP-NCS/G) aerogels to mimic the analogous mass transfer process toward superior electrochemical performances is demonstrated. The key step is to develop hybrid inks with printability and homogeneity by introducing sodium alginate into graphene oxide solutions to boost viscoelastic responses and adopting a new developed precursor Ni0.33Co0.66(OH)(2)center dot xH(2)O with ultrafine and high stable features. Benefiting from high-speed channels for electron/ion transport provided by the interconnected graphene frameworks and massive exposed edge sites provided by the uniformly dispersed Ni0.33Co0.66S2 nanoparticles, the 3DP-NCS/G electrode exhibits capacities of 217.6 mAh g(-1) at 1 A g(-1) and 164.6 mAh g(-1) at 10 A g(-1). Furthermore, a hybrid device is demonstrated for the first time with both electrodes manufactured by 3D-printing technique, which delivers excellent areal energy/power densities with values comparable to those of commercial devices, even at a practical level of electrode mass loading (17.86 mg cm(-2)). This work offers a versatile strategy for integrating various functional nanomaterials with programmable architectures toward myriad applications.