zkusit tanin, nebo teda inkoust z zaludu/dubenek proti formovani dendritu.. (https://www.youtube.com/watch?v=BhzInIneUzg) pouziva se to v zinkovych bateriich.

https://www.youtube.com/watch?v=WZkqgj1J_WE

https://hackaday.com/2019/08/03/an-all-iron-battery-isnt-light-but-its-cheap/