Humboldt Fellow joins HZB for battery research
Dr. Wenxi Wang specialises in the design of organic electrodes for lithium-sulfur and zinc-ion batteries and investigates interactions between ions and active materials. © arö/HZB
Dr. Wenxi Wang is working in the team of Prof. Yan Lu as Humboldt Foundation postdoctoral fellow. He studied at the Southern University of Science and Technology in Shenzhen, China, and completed his doctorate at the King Abdullah University of Science and Technology in Saudi Arabia. He specialises in the precise design of organic electrodes for lithium-sulfur and zinc-ion batteries and the investigation of the interactions between ions and active materials.
"At Helmholtz-Zentrum Berlin I find excellent conditions to deepen my research," says Wenxi Wang. Prof. Yan Lu's group has extensive experience in the synthesis and characterisation of novel electrode materials and state-of-the-art infrastructures for battery research. In addition, the X-ray source BESSY II at HZB offers a variety of spectroscopic methods to analyse electrochemical reactions in real time.
Lithium-sulfur (Li-S) batteries are considered one of the most interesting technologies to replace lithium-ion batteries due to their extremely high energy density and cheap starting materials. However, their performance still falls far short of expectations due, in part due to polysulfide intermediates that form during charging cycles. Porous host materials can trap such polysulfides, improving the energy density and lifetime of Li-S batteries. "My research project focuses on the precise design of organic-based host materials with suitable pore sizes and functional groups (Covalent Organic Frameworks, COF) to enable high-performance Li-S batteries and deepen our understanding of their mechanisms," says Wang.
“Jugend-forscht” winners at HZB (Update)
Charlotte Klar and Katharina Austermann (both 18) have already come a long way: With their experiments on pyrolytic graphite, they are trying to solve a puzzle they found in the technical literature on diamagnetism. With their work, they convinced both the Jugend-forscht-Jury at the Berlin South Regional Competition and the Berlin Competition. Now, they will join the national competition which will take place from 18 to 21 May in Bremen.
Alexander von Humboldt Foundation Grant for Dr. Jie Wei
In April, Dr. Jie Wei started his research work in the Helmholtz Young Investigator Group Nanoscale Operando CO2 Photo-Electrocatalysis at Helmholtz-Zentrum Berlin (HZB) and Fritz Haber Institute (FHI) of the Max Planck Society. Wei received one of the highly competitive Humboldt postdoctoral research fellowships and will pursue his two-year project under the guidance of the academic hosts Dr. Christopher Kley and Prof. Dr. Beatriz Roldan Cuenya.
Calculating the carbon footprint of publications
Prof. Dr. Jens Eisert heads the Quantum Computation and Simulation research group, which is jointly funded by Freie Universität Berlin and HZB. The theoretical physicist recently received an Advanced Grant from the European Research Council ERC for his research project "DebuQC". But Eisert is not only an award-winning scientist, he is also concerned about global warming. Last year, on the initiative of Ryan Sweke, he and his team published a proposal that deserves attention: scientific publications on theoretical physics or chemistry could include a simple table listing the greenhouse gases emitted during the research. This would raise awareness of the fact that research is not climate neutral.