Converting Plant Biomass to Carbon Electrodes

  • Author: Georg R. Meseck
  • Published: 14 December 2016
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Advanced Functional Materials/Wiley-VCH
thumbnail image: Converting Plant Biomass to Carbon Electrodes

Activated carbon is an attractive electrode material due to its large surface area and good conductivity. The production of activated carbon often involves several steps, including the use of harmful activating agents during carbonization.

Jiayan Luo, Tianjin University, China, and colleagues have taken advantage of the fact that many plants naturally contain alkali ions that can replace other activating agents. Starting from lotus plants, the researchers obtained highly porous carbons in a one-step pyrolysis under nitrogen. The porosity of these carbons is significantly different when either stems (1610 m2 g–1) or leaves (1039 m2 g–1) of the plant are used. This effect is correlated with the different amount of alkali ions present in the different plant organs and is also demonstrated in other plants with an inhomogeneous distribution of alkali ions (e.g., asparagus lettuce and celery).

The team used cyclovoltammetry to show the applicability of their materials as supercapacitor electrodes. They found high specific capacities of up to 39.4 µF cm–2 in carbons derived from celery leaves.


Article Views: 2863

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from, please contact us first for permission. more

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH