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Helmholtz Joint Lab for Polymers in Energy Applications

HIPOLE Jena

Polymer materials offer a vast, largely unexplored parameter space for tunable properties. They can play a central role in the mitigation of climate change by enabling energy technologies with high efficiency, scalability, low-cost, sustainable production as well as unique features such as mechanical flexibility and self-healing.


HIPOLE Jena - Helmholtz Institute for Polymers in Energy Applications Jena started in 2020, as a collaboration between Helmholtz Zentrum Berlin (HZB) and Friedrich Schiller University Jena (FSU Jena). The inter-faculty Center for Energy and Environmental Chemistry Jena (CEEC Jena) at the FSU Jena is internationally renowned in the field of polymer chemistry for energy storage and conversion. This makes FSU Jena and HZB perfectly complementary partners, as illustrated in the figure here. 
HIPOLE Jena specifically focuses on the design and fabrication of polymer-based batteries at CEEC Jena[1] and their advanced characterization at HZB. 

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Complementary elements of the scientific concept of HIPOLE Jena.

First results

Recently, scientists of the HIPOLE Jena studied polymer-based electrodes and were the first to quantitatively characterize their 3D microstructure, which is a key factor for the electrical performance of battery cells. Synchrotron X-ray tomography was combined with statistical image analysis.[2]

In another collaborative work, factors limiting the energy density of sodium-ion batteries was investigated.[3] The storage of sodium in the anode was explored with complementary expertise such as:

  1. The successful fabrication of polymeric carbon nitride (p-C3N4) of varying microporosity
  2. small-angle X-ray scattering (SAXS) measurements. High storage capacity at a low potential

is only possible, when suitable, sealed pores are present.

Funding

The scientists of the HIPOLE Jena at the CEEC Jena are fun­ded by the Thuringian Ministry of Economics, Science and Digital Society (TMWWDG) for three years.

Since 2020, HZB and the FSU Jena are also cooperating within the framework of the priority program titled ‘Polymer-based Batteries’ (SPP 2248) of the Deutsche Forschungsgemeinschaft (German Research Foundation, DFG) in a total of seven sub-projects.[3] 

Outlook

Building on the developments from HIPOLE Jena, FSU Jena and HZB continue to collaborate to pursue a novel, targeted approach on polymer materials for energy applications. The figure here summarizes the envisioned ecosystem for the mitigation of climate change. The central goal is creation of innovative polymer materials for novel, scalable, and sustainable energy technologies.

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Future ecosystem of polymers to be developed at HIPOLE Jena contributing to a sustainable carbon-neutral society. All focus areas are aligned with those of the Helmholtz program, 'Materials and Technologies for the Energy Transition'.

The scope of the collaboration includes the following research areas:

  1. Polymer redox-flow batteries
  2. Polymer-based thin-film batteries
  3. Photovoltaics
  4. Functional self-healing materials
  5. Sustainable chemistry
 

[1] Muench, S., Burges, R., Lex-Balducci, A., Brendel, J. C., Jäger, M., Friebe, C., ... & Schubert, U. S. (2020). Printable ionic liquid-based gel polymer electrolytes for solid state all-organic batteries. Energy Storage Materials, 25, 750-755. DOI: 10.1016/j.ensm.2019.09.011

[2] Neumann, M., Ademmer, M., Osenberg, M., Hilger, A., Wilde, F., Muench, S., ... & Schmidt, V. (2022). 3D microstructure characterization of polymer battery electrodes by statistical image analysis based on synchrotron X-ray tomography. Journal of Power Sources, 542, 231783. DOI: 10.1016/j.jpowsour.2022.231783.

[3] Schutjajew, K., Giusto, P., Härk, E., & Oschatz, M. (2021). Preparation of hard carbon/carbon nitride nanocomposites by chemical vapor
deposition to reveal the impact of open and closed porosity on sodium storage. Carbon, 185, 697-708. DOI: 10.1016/j.carbon.2021.09.051

[4] Deutsche Forschungsgemeinschaft. Priority Programme „Polymer-based Batteries“ (SPP 2248).