This is a content farm/copy of a copy (rule c)1), but I won’t remove this due to the immense momentum this post has. Additionally, the linked ScienceDirect paper appears unrelated.

Instead, I’d recommend one of the following high-quality sources:

https://www.scmp.com/news/china/science/article/3351111/china-unveils-ultra-cheap-all-iron-battery-renewable-energy-storage (paywalled!)

https://advanced.onlinelibrary.wiley.com/doi/10.1002/aenm.202506734 (paywalled but has abstract, and your local library may have access) —thanks SaveTheTuaHawk@lemmy.ca!