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The hybridisation of Co 3 O 4 and Fe 2 O 3 nanoparticles dispersed in a super P carbon matrix is proposed as a favourable approach to improve the electrochemical performance (reversible capacity, cycling stability and rate capability) of the metal oxide electrodes in metal-ion batteries. Hybrid Co 3 O 4 -Fe 2 O 3 /C is prepared by a simple, cheap and easily scalable molten salt method combined with ball-milling and used in sodium-ion and potassium-ion batteries for the first time. The electrode exhibits excellent cycling stability and superior rate capability in sodium-ion cells with a capacity recovery of 440 mA h g -1 (93% retention) after 180 long-term cycles at 50-1000 mA g -1 and back to 50 mA g -1 . In contrast, Co 3 O 4 -Fe 2 O 3 , Co 3 O 4 and Fe 2 O 3 electrodes display unsatisfactory electrochemical performance. The hybrid Co 3 O 4 -Fe 2 O 3 /C is also reactive with potassium and capable of delivering a reversible capacity of 220 mA h g -1 at 50 mA g -1 which is comparable with the most reported anode materials for potassium-ion batteries. The obtained results broaden the range of transition metal oxide-based hybrids as potential anodes for K-ion and Na-ion batteries, and suggest that further studies of these materials with potassium and sodium are worthwhile.