Could they be the paper batteries the future within the energy sector? This is the question we asked ourselves after learning about the latest patent filed by a Singapore startup, Flint Companywho has been working on the topic for some time. Now, taking advantage of the celebration of the recent CES 2025have announced their latest advances in the matter, opening the door to a much cleaner and more sustainable sector than we knew until now.
Paper batteries: A possible substitute for current batteries
As we have been able to learn thanks to the colleagues of the Italian media Insella, the paper battery technology that Flint uses has a differentiating element with what we knew until now: the cellulose separator. Thanks to this advance, the brand declares an energy density of 220 Wh/kg and 410 Wh/l.
After knowing these results, more than one is already questioning whether the paper batteries that the Flint Company team is working on could be a real substitute for the current ones made with polluting metals, such as cobalt or lithium. Regarding the technical aspects, we are talking about an aqueous gel electrolyte, combined with a zinc cathode and a manganese anode.
This structure eliminates a possible risk of fire or explosion, also converting paper batteries into much less polluting and generally more environmentally friendly elements. This is possible, especially, by using materials with a high degree of biodegradability.
Now, currently the maximum voltage that can be extracted from Flint Company’s paper batteries is only 1.5 volts, a really important handicap if we want to use them in key sectors such as the motor world. For its part, the company has confirmed that the development process is underway, but there is still a reasonable amount of time to be able to extract the maximum potential from this technology.
The current estimate is five to ten years, the time needed to develop cells with a higher voltage. Likewise, Flint is also looking for new alternatives with which to implement its production methods in existing industrial lines, trying to achieve a gradual technological transition.
For now, they have the support of different entities that have initially provided a total financing of about two million dollars. Although it is not a figure with which to go very far in this field, it will serve to begin testing different development models with the subsequent small-scale laboratory tests, taking another step towards the use of paper batteries within of the major global industries.
