All-cellulose composites based on paper fines for energy storage devices

Hobisch, M. (Speaker), Eleonore Siham Mourad (Contributor), Wolfgang Johann Fischer (Contributor), Zankel, A. (Contributor), Mautner Andreas (Contributor), Eckhart, R. (Contributor), Bauer, W. (Contributor), Freunberger, S. (Contributor), Spirk, S. (Contributor)

Activity: Talk or presentationTalk at conference or symposiumScience to science

Description

In this contribution, we explore applications of paper fines for advanced energy applications. Fines are a major side stream in fiber manufacturing industries. Here, we developed a strategy how to make use of fines as electrode materials with implementing in supercapacitors. Different activation procedures for fines to obtain highly porous activated carbons are tested with KOH being the most effective one, allowing for manufacturing materials with SSA as high as 1570 m2ˑg-1. A further increase of the SSA (up to 2200 m2ˑg-1) is realized by incorporation of cellulose nanocrystals into the fines, thereby creating a hierarchical order. The electrode materials are implemented in symmetric supercapacitors using organic electrolytes (TEABF4 in acetonitrile). The capacitance of the materials is up to 164 Fˑg-1, but easily modified by the amount of CNCs in the composite. The Ragone plot demonstrates that the performance of the fines based carbonaceous materials is significantly better than those reported in literature.
Period14 May 2018
Held at3rd EPNOE Junior Scientist Meeting
Event typeConference
LocationMaribor, Slovenia
Degree of RecognitionInternational