Microporous and Mesoporous Materials
Microporous and Mesoporous Materials
5 years ago

Trace phosphorus−doping significantly improving S-content of binary−doped mesoporous carbon network with enhancing electrochemical performance

Trace phosphorus−doping significantly improving S-content of binary−doped mesoporous carbon network with enhancing electrochemical performance
S, N-co-doped porous carbon (SNPC) exhibit potential application in fuel cell, supercapacitors and lithium-ion batteries (LIBs) because of synergistic effect of S and N atom. However, SNPC prepared by one-pot method usually features the drawback of low S-content and thereby weakens the synergistic effect both geometrically and electronically. Herein, we reported one facile synthetic approach to prepare high S-content SNPC. In this regard, the introduction of NaH2PO4 into the pyrolysis of S, N-containing precursor is beneficial to confine S atoms in carbon framework. It is found that S-content is 25.05% for SNPPC-700, 12.58% for SNPPC-800, higher than previously reported results. Structural characterizations indicate that NaH2PO4 salt plays an important role. Furthermore, LIBs test shows high S-content SNPPC-800 features the higher capacities of 977.68 mAh g−1 after 50 cycles than those of low S-content SNPC-800 at 100 mA g−1. Moreover, ORR activity measurements show a slight better performance and cycling durability than low S-content SNPC. In addition, the SNPPC-800 also reveals excellent supercapacitor performance with an specific capacitance of 227.5 F g−1 at 0.5 A g−1, and kept 160.29 F g−1 via the measurement of 6000 cycles at 10 A g−1.

Publisher URL: www.sciencedirect.com/science

DOI: S1387181117305267

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.