---
title: "Weier, T.; Nash, W. Na-ZnCl2-based high-temperature batteries for stationary storage, Dresden, Deutschland; 600 °C design more scalable at cell level"
sdDatePublished: "2026-09-12T04:20:00Z"
source: "https://www.hzdr.de/publications/Publ-43253"
topics:
  - name: "energy industry"
    identifier: "medtop:20000261"
  - name: "scientific research"
    identifier: "medtop:20000735"
  - name: "scientific innovation"
    identifier: "medtop:20000736"
locations:
  - "Dresden"
  - "Germany"
---


Weier, T.; Nash, W. Na-ZnCl2-based high-temperature batteries for stationary storage, Dresden, Deutschland; 600 °C design more scalable at cell level

Na-ZnCl2-based high-temperature batteries for stationary storage - Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf, HZDR

Na-ZnCl2-based high-temperature batteries for stationary storage

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Weier, T. ; Nash, W. ; Sarma, M. ; Weber, N.

Large-scale energy storage is becoming increasingly important when it comes to maintaining traditional consumption patterns despite the growing volatility of supply. Given the central role that energy plays for the competitiveness of an economy, storage costs and resource demands should be minimized. We present two closely related approaches to address this challenge. Both of which use Na anodes and Zn cathodes, but differ in design and in the choice of electrolyte and operating temperature. The storage concept, which operates at 300 °C with a solid electrolyte, is based on the proven Na-NiCl2 (ZEBRA) cells, but replaces Ni and NiCl2 with Zn and ZnCl2. This results in a reduction of both energy-related costs and negative environmental impacts. The second concept has a lower level of technological maturity, but promises greater cost-reduction potential in the long term. The cells, which operate at 600 °C, do not use a solid electrolyte and are therefore more scalable at the cell level. However, the temperature-induced high solubility of sodium in the molten salt serving as the electrolyte currently still reduces efficiency. The poster will present a comparison of both approaches and discuss their specific characteristics. This also includes the expected economic parameters of the two concepts.

Keywords: liquid metal batteries; molten salt batteries; stationary storage

Poster Building Bridges 2026 - Shaping the Future of Energy, 09.-10.09.2026, Dresden, Deutschland

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