Disassembly and recycling concepts for PEM fuel cell stacks

Project

An orange KUKA industrial robot can be seen in a production hall performing work steps. The scene shows a large room with a row of machines and equipment. In the foreground is an orange robot arm lifting a part. The robot arm is part of a larger production facility, and it appears to be an automated production line. The different areas of the room are separated by partitions or barriers, indicating that different processes are taking place. The environment is bright and well lit, with no direct sunlight. It is a typical production area in a factory. The robot arm is the main focus of the scene and is positioned in the center of the image. It is orange and consists of several segments that are connected to each other and has various connections and components. The positioning of the robot indicates its function and that it is performing a specific task. The robot arm is made of orange metal and has various elements such as joints, sensors, and cables. The position of the robot, the arm, the mechanisms, and the workflows are clearly visible. The style of the image is neutral, documentary, and focused on the technical function of the industrial robot. It is more of a photographic image than an artistic representation. The colors are mainly neutral and focus on the technical components. The production area is bright and well lit. The wall colors are mainly light gray and light blue. The environment is clean and organized. The light probably comes from skylights or artificial light sources, creating a neutral atmosphere. There are no specific features that influence the mood or time of day.
© Fraunhofer IST
Stacking system for automated assembly and disassembly of fuel cell stacks.
Icons der Sustainable Development Goals 7, 8, 9, 12, 13

Valuable resources and ecological challenges

PEM fuel cells contain precious metals such as platinum as well as fluorine-containing-polymers, which are both ecologically and economically critical. In view of rising production figures, the need for sustainable end-of-life solutions is becoming increasingly urgent in order to recover valuable materials and keep environmentally harmful materials in the cycle.

Automated disassembly and resource-efficient recycling

The project focuses on the development of automated and scalable disassembly that enables component-specific further processing. The aim is to identify reusable components. With the help of a flexibly configurable recycling line, suitable process chains and component-specific processes will be developed and evaluated with the aid of life cycle assessments. The findings from dismantling and recycling investigations will be incorporated into concrete recommendations for a recycling-oriented design of future fuel cell generations.

From pilot scale to industrial application

The process chains developed are intended to identify economically viable ways to keep more materials in the cycle and avoid the currently common – and, due to their fluorine content, particularly problematic – incineration of end-of-life fuel cells. The investigation of the processes on a pilot scale is intended to facilitate transfer to possible industrial applications and thus contribute to the establishment of sustainable solutions in practice.

Insights into the project

A small, transparent glass container filled with a yellow liquid stands on a white laboratory table. Other glassware, such as Erlenmeyer flasks and test tubes, can be seen in the background.
© Fraunhofer IST
Recycling of CCMs from PEM fuel cells. Here: platinum solution
Two transparent glass containers filled with dark, crushed material stand next to each other. The containers are sealed with blue-rimmed lids. Notes and markings can be seen on the containers. The material in the jars looks different, with one jar containing darker material and the other containing slightly lighter material. The jars are arranged on a white background and fill most of the image.  The image shows a photograph of two glass containers, each filled with a dark, crushed material. The containers are standing next to each other and are sealed with blue-rimmed lids. Notes and markings can be seen on the containers.  The material in the jars looks different.  The artistic style is documentary and focuses on depicting the materials and the corresponding labels.  The surroundings are bright and unremarkable, with a background showing vague industrial elements. The light falls evenly on the containers without strong shadows or special lighting effects. The mood of the image is factual and neutral. In the background is a sorting plant (in the background) and its product fractions (in the foreground).
© Fraunhofer IST
Mechanical PEM fuel cell recycling. Here: separation plant (in the background) and its product fractions (in the foreground).

The project H2GO – ST2P (03B11027D) is funded by the Federal Ministry for Digital and Transport (BMDV) within the framework of BMDV´s electromobility funding guidelines. The funding guidelines are coordinated by NOW GmbH and implemented by Projektträger Jülich (PtJ).

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