Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 27, Pages 7881-7885Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201702711
Keywords
binder-free electrodes; graphene oxide; potassium-ion batteries; rusty stainless steel meshes
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Funding
- National Natural Science Foundation of China [51522101, 51471075, 51631004, 51401084]
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To recycle rusty stainless-steel meshes (RSSM) and meet the urgent requirement of developing high-performance cathodes for potassium-ion batteries (KIB), we demonstrate a new strategy to fabricate flexible binder-free KIB electrodes via transformation of the corrosion layer of RSSM into compact stack-layers of Prussian blue (PB) nanocubes (PB@SSM). When further coated with reduced graphite oxide (RGO) to enhance electric conductivity and structural stability, the low-cost, stable, and binder-free RGO@PB@SSM cathode exhibits excellent electrochemical performances for KIB, including high capacity (96.8 mAh g(-1)), high discharge voltage (3.3 V), high rate capability (1000 mA g(-1); 42% capacity retention), and outstanding cycle stability (305 cycles; 75.1% capacity retention).
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