Helmholtz-Zentrum Geesthacht, 2017-10-19
http://www.hzg.de/049702/index_0049702.html.en

Albemarle (Rockwood Lithium GmbH)

Profile

Rockwood Lithium is the world’s leading supplier of lithium compounds like butyllithium, lithium-hydrides, -alkoxides, and -amides. Furthermore Rockwood Lithium supplies other organometallics, cesium compounds as well as special metals. Headquartered in Germany, Rockwood Lithium serves its customers with a worldwide network of sales offices as well as with production sites in Germany, both South and North America, India and Taiwan. Since 2004, the company has been part of Rockwood Holdings, Inc. In 2012 the company changed its brand from Chemetall Lithium to Rockwood Lithium.

Rockwood Lithium is a global company committed to specialty chemistry and a manufacturer of fine chemicals, e.g. lithium-, cesium- and other metal compounds. The company is a leading producer of lithium metal in many different forms of delivery (e.g. powder, granulate, foils, and anodes), of organolithium compounds (e.g. butyllithium), hydrides (e.g. lithium aluminium hydride, titanium hydride) and nitrogen containing compounds (e.g. lithium amide, lithium nitride). Handling of these reactive, partly pyrophoric materials in lab and production belongs to its core competencies. Rockwood Lithium has a long experience with the production of pure lithium salts, which find a. o. application in battery electrolytes. Especially a group of non-fluorinated materials (e.g. lithium bis(oxalato)borate) which can be applied as conductive salts and as film-forming additives has been developed.

 

Key personnel

Dr. Ulrich Wietelmann

PhD chemist, since 1986 with Chemetall/Rockwood Lithium.

Experimental Facilities

The Rockwood Lithium department in Frankfurt comprises
• lab bench working places for the synthesis and manipulation of air sensitive materials
• in-line reaction analyses (e.g. IR, particle size distribution, refraction index)
• thermochemical measurements
• a Kilo Lab facility
• an electrochemical performance lab
• state of the art analytical tools (inorganic and organic analyses), surface investigation etc.

Selected publications and patents

  • Corina Täubert http://jes.ecsdl.org/content/157/6/A721.abstract - aff-1, Meike Fleischhammer http://jes.ecsdl.org/content/157/6/A721.abstract - aff-1, Margret Wohlfahrt-Mehrens, Ulrich Wietelmann and  Thorsten Buhrmesterb,* J. Electrochem. Soc. 2010 volume 157, issue 6, A721-A728  " LiBOB as Electrolyte Salt or Additive for Lithium-Ion Batteries Based on LiNi0.8Co0.15Al0.05O2 / Graphite".
  • M.Wachtler, M.Wohlfahrt-Mehrens, S.Ströbele, J.-C. Panitz, U. Wietelmann, J.Appl. Electrochem. 36,  2006, 1199-2006 „The Behaviour of Graphite, Carbon Black and Li4Ti5O12 in LiBOB-based electrolytes“. 
  • J.C. Panitz, U. Wietelmann, M.Wachtler, M. Wohlfahrt-Mehrens, J. Power Sources 153(2006)396 “Film Formation in LiBOB-based Electrolytes”.
  • U. Wietelmann et al., Chem.Eur.J., 10, (2004), 2451-8 „Tris(oxalato)phosphorous Acid and its Lithium Salt“.
  • WO002011121084A1, "Metallimidverbindungen als Anodenmaterialien für Lithiumbatterien und galvanische Elemente mit hoher Speicherkapazität".
  • US6506516B1, "Lithium bisoxalatoborate, the production thereof and its use as a conducting salt".
 

 

Contact

Dr. Ulrich Wietelmann
Albemarle (Rockwood Lithium GmbH)
Industrial Park Hoechst
Building G879
D-65926 Frankfurt am Main
Phone: +49-69-40126-3076

ulrich DOT wietelmann AT rockwoodlithium DOT com

http://rockwoodlithium.com/