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RWTH Aachen - Lehrstuhl für Technische Thermodynamik

The Chair of Tech­ni­cal Ther­mo­dy­na­mics at RWTH Aachen Uni­ver­sity covers all rele­vant sca­les for the descrip­tion of a pro­cess star­ting from the mole­cu­les up to the full pro­cess scale. The chair pre­sently hosts 4 pro­fes­sors and more than 40 PhD stu­dents. It is tightly enga­ged in coope­ra­tion pro­jects on bio­fuel pro­duc­tion and uti­li­sa­tion as well as on CO2 uti­li­sa­tion with indus­trial and aca­de­mic part­ners. The PhD posi­tion is open in the Mole­cu­lar Sys­tems Engi­nee­ring group led by Prof. Leon­hard.

Research Assistant (w/m/d)

Work­ing field:

Often, the sta­bi­lity of ionic liquid (ILs) is men­tio­ned as one of their major advan­ta­ges. Nevertheless, in many poten­tial app­li­ca­ti­ons issues with their sta­bi­lity show up which have been stu­died very little up to now. The pre­sent pro­ject aims at fil­ling this gap by theo­re­ti­cal (RWTH) and expe­ri­men­tal (Uni­ver­sity of Ros­tock) stu­dies. You will rese­arch the reac­tion net­works that describe the decom­po­si­tion of ILs. You will per­form ab ini­tio simu­la­ti­ons, simu­la­ti­ons with reac­tive force fields, and quan­tum che­mi­cal cal­cu­la­ti­ons. You will vali­date your results with expe­ri­men­tal results obtai­ned by the part­ners in Ros­tock. Based on these results, we will jointly deve­lop sim­pli­fied rules for the sta­bi­lity of ILs based on their struc­ture. The ulti­mate goal is the decision whe­ther a given IL has a suf­fi­ci­ent long-term sta­bi­lity for a pro­cess of inte­rest. The methods will be tested for prac­ti­cal app­li­ca­ti­ons like IL and elec­tro­lyte solu­ti­ons in bat­te­ries and fuel cells.


  • MSc Degree (or com­pa­ra­ble) in Che­mi­stry, Phy­sics, (Che­mi­cal) Engi­nee­ring or Engi­nee­ring Phy­sics.
  • Good writ­ten and ver­bal com­mu­ni­ca­tion skills in Ger­man and Eng­lish.
  • Acquain­tance with com­pu­ta­tio­nal che­mi­stry, ide­ally with reac­tive force field methods and quan­tum mecha­ni­cal methods and soft­ware.

Desi­ra­ble addi­tio­nal know­ledge and expe­ri­ence:
  • Gene­ral pro­gramming skills (UNIX, scrip­ting lan­guages, python, debug­ging, etc.).
  • Team player, with good two-way com­mu­ni­ca­tion skills, highly self-moti­va­ted and able to work inde­pendently with excel­lent time manage­ment skills.

What we of­fer:

The posi­tion is initi­ally for 15 mon­ths and is to be fil­led at the ear­liest pos­si­ble date. An exten­sion to a total of at least 4 years is plan­ned. This is a full-time posi­tion with the pos­si­bi­lity of a part-time con­tract upon request.

The suc­cess­ful can­di­date has the oppor­tu­nity to pur­sue a doc­to­ral degree.

The salary cor­re­sponds to pay grade EG EG 13 TV-L of the Ger­man public ser­vice salary scale (TV-L).

RWTH is a cer­ti­fied family-fri­endly Uni­ver­sity. We sup­port our employees in main­tai­ning a good work-life balance with a wide range of health, advi­sing, and pre­ven­tion ser­vices, for example uni­ver­sity sports. We also offer a com­pre­hen­sive con­ti­nuing edu­ca­tion scheme and a public trans­por­ta­tion ticket avail­able at a signi­fi­cantly redu­ced price. RWTH is an equal oppor­tu­nities employer. We the­re­fore wel­come and encou­rage app­li­ca­ti­ons from all sui­ta­bly qua­li­fied can­di­da­tes, par­ti­cu­larly from groups that are under­re­p­re­sen­ted at the Uni­ver­sity. All qua­li­fied app­li­cants will receive con­si­de­ra­tion for employ­ment and will not be discri­mi­na­ted against on the basis of natio­nal or eth­nic ori­gin, sex, sexual ori­en­ta­tion, gen­der iden­tity, reli­gion, disa­bi­lity or age. RWTH is stron­gly com­mit­ted to encou­ra­ging women in their care­ers. Female app­li­cants are given pre­fe­rence if they are equally sui­ta­ble, com­pe­tent, and pro­fes­sio­nally qua­li­fied, unless a fel­low can­di­date is favo­red for a spe­ci­fic rea­son. As RWTH is com­mit­ted to equa­lity of oppor­tu­nity, we ask you not to include a photo in your app­li­ca­tion. You can find infor­ma­tion on the per­so­nal data we collect from app­li­cants in accordance with Arti­cles 13 and 14 of the European Union's Gene­ral Data Pro­tec­tion Regu­la­tion (GDPR) at

How to ap­ply:

If you have any ques­ti­ons, please con­tact
Leif Krö­ger
Tel.: +49 (0) 241 80 95356

For fur­ther infor­ma­tion, please visit our web­site at:

Please send your app­li­ca­tion by July 26, 2020 to
Lehr­stuhl für Tech­ni­sche Ther­mo­dy­na­mik
z.H. Leif Krö­ger
RWTH Aachen Uni­ver­sity
Schin­kel­straße 8
52062 Aachen

App­li­cants are invi­ted to sub­mit their app­li­ca­ti­ons via email to For data pro­tec­tion rea­sons, howe­ver, we recom­mend sen­ding app­li­ca­ti­ons via mail.