New paper published in Desalination on the influence of activated carbon particle size on CDI

New paper published in Desalination with the title “Particle size distribution influence on capacitive deionization: Insights for electrode preparation”. Our work explores the particle size dispersity of commercially available activated carbon. No activated carbon powder is “perfect”, that is, every powder contains (a bit) larger and smaller particles. Size separation allows to capitalize on “one powder – several sizes” aspect. Comparing mixed-sized, small-size, and large-size activated carbon classes (of the same activated carbon powder), our work shows that large particles suffer from ion transport limitation, but so do electrodes composed of (well-packed) small particles. The best performance was found to be in the middle: a hierarchic mixture of larger and smaller activated carbon particles.

New paper published in ACS Applied Materials & Interfaces on porous mixed-metal oxides for lithium-ion batteries

New paper published in ACS Applied Materials & Interfaces. This work in collaboration with the teams of Markus Gallei and Guido Kickelbick (both at Saarland University) explores shear-induced co-assembly as a step towards creating unique (ordered) materials. The latter can be conveniently converted to metal oxide / carbon hybrids via thermal annealing. For example, titanium niobium oxide / carbon obtained this way profided 335 mAh/g at 10 mA/g and a capacity retention of 84% after 1000 cycles at 250 mA/g.

New paper published in Research on cobalt hydroxide nanostructures for high performance desalination batteries

New paper published in the AAAS journal Research on the use of hollow / nanosheet / needle-like cobalt hydroxide for the use for high performance electrochemical desalination. This material architecture allows for rapid ion removal and high stability in absence of strain-build-up. This work was done in collaboration with the team of Jie Ma at Tongji University.

New paper published on dilatometry of pillared MXene in Journal of Physical Chemistry C

New paper published in Journal of Physical Chemistry C on the origin of better long-term electrochemical performance of silica-pillared MXene. This unique material provides enhanced performance as an lithium-ion battery electrode (ca. 300 mAh/g at 20 mA/g rate). Although larger volume changes are seen for the pillared MXene, this is not a detriment to the cycling stability. This work was done in collaboration with the teams of Nuria Tapia-Ruiz (Lancaster University) and Nuno Bimbo (now: University of Southampton).

New paper published on redox-responsive 2-aminoanthraquinone core-shell particles in ACS Applied Polymer Materials

New paper published in ACS Applied Polymer Materials on the use of redox-responsive 2-aminoanthraquinone core-shell particles for structural colors and carbon capture. This work was done in collaboration with the group of Markus Gallei (Saarland University), Karin Jacobs (Saarland University), and T. Alan Hatton (MIT).

New mini review published on three generations of electrochemical desalination in Current Opinion in Electrochemistry

New paper published in Current Opinion in Electrochemistry on three generations of electrochemical desalination. Starting with capacitive deionization with carbon in the 1960s to desalination batteries in the 2010 to now including electrocatalytical processes, the field of electrochemical desalination has become truly diverse.

New paper published in Sustainable Energy & Fuels on lithium recovery with carbon coated LFP

New paper published in Sustainable Energy & Fuels on the degradation processes of lithium iron phosphate during electrochemical lithium recovery. Removal of dissolved oxygen suppresses the degradation but also coating of LFP with a thin layer of carbon. This work was done in collaboration with the group of Guido Kickelbick at Saarland University.

New paper published on MXene dry wear application in ACS Nano

New paper published in ACS Nano on the significantly reduced wear on a metal surface after electro-spray coating with MXene. The work was spearheaded by colleages from Austria (TU Vienna) and Saarland University (MECS), and capitalized on the synergy of collaboration between Austria, Chile, China, Germany, and the United States of America. Our work also was featured in the news, for example:

https://www.tuwien.at/tu-wien/aktuelles/news/2d-nanomaterial-mxene-der-perfekte-schmierstoff

https://cen.acs.org/materials/2-d-materials/MXenes-make-durable-solid-lubricants/99/web/2021/04

https://www.derstandard.at/consent/tcf/story/2000125999939/neues-2d-wundermaterial-ist-der-perfekte-schmierstoff