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Low-cost H2/K+ hybrid batteries for large-scale energy storage
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DOI：10.1016/j.jpowsour.2024.234491.png)
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Abstract
En 中文
Rechargeable hydrogen gas batteries are gaining significant attention as a highly reliable electrochemical energy storage technology. However, the high costs of both cathode and anode limit their widespread applications. Here, we demonstrate a low-cost H-2/K+ hybrid battery using Fe-Mn-based Prussian white - K274Mn[Fe(CN)(6)](0.90)0.13H(2)O (KMF) as cathode and non-noble metal high entropy alloy (NNM-HEA) as anode. It demonstrates a high capacity of 146.1 mAh g(-1) at 1 A g(-1) with excellent rate performance and stability. Even with a similar to 7-fold increase in active loading of the KMF cathode, the capacity of the H-2/K+ battery remains as high as 100.5 mAh g(-1). Furthermore, a low-cost H-2/K+ hybrid battery using our newly developed NNM-HEA based hydrogen catalytic anode is successfully fabricated, which shows an extended capacity with a retention of 90% after 1200 cycles. This work will pave the way for designing low-cost electrode materials for high-performance, large-scale energy storage hydrogen gas batteries.
Keywords:
Aqueous hydrogen gas battery
H-2/ K(+)hybrid battery
Low-cost electrode
Ultrahigh rate capability
Large-scale energy storage
Journal
IF:
7.9
Papers:
3.7W
Citations:
15.0W