• 文献标题:   Sulfur and nitrogen co-doped holey graphene aerogel for structurally resilient solid-state supercapacitors under high compressions
  • 文献类型:   Article
  • 作  者:   KOTAL M, KIM H, ROY S, OH IK
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS CHEMISTRY A
  • ISSN:   2050-7488 EI 2050-7496
  • 通讯作者地址:   Korea Adv Inst Sci Technol
  • 被引频次:   18
  • DOI:   10.1039/c7ta05237e
  • 出版年:   2017

▎ 摘  要

Structural energy storage devices having load-bearing or stress-tolerant functionalities are crucial for designing wearable and soft electronics. In order to supply power to next-generation electronic systems, structurally resilient solid-state supercapacitors (SRSSs) with sustainable conductivities and electrochemical performances under large compressions are a promising candidate. Here, we report a synthetic porous framework of a nitrogen and sulfur co-doped holey graphene aerogel (NS-HGA) for SRSSs under high compression loadings. Such a covalently interconnected holey graphene nanoarchitecture co-doped with nitrogen (3.11%) and sulfur (1.87%) has a greatly improved resilient structural integrity, with repeatable elasticity along with high compressive strength. Therefore, the NS-HGA featuring high electrolyte ion storage, unhindered ion channels, excellent conductivity (21.66 S m(-1)), and promising electrochemical performances exhibits significantly high volumetric capacitance (203 mF cm(-3)) in a SRSS with good rate capability and almost unaltered capacitance even at 50% compression, with good durability for 200 cycles. Interestingly, when four NS-HGA: SRSSs were integrated into series, a bright green LED was illuminated even after charging for very few seconds. The proposed dual heteroatom-doped holey graphene aerogel, devoid of any pseudocapacitive materials, can be successfully used for high compression-permissive SRSSs in the modern era of wearable and soft elastic electronics.