Sodium ion batteries (SIBs) have drawn interest as a lithium ion battery (LIB) alternative owing to their low price and low deposits. To commercialize SIBs similar to how LIBs already have been, it is necessary to develop improved anode materials that have high stability and capacity to operate over many and long cycles. This paper reports the development of homogeneous Sb₂S₃ nanorods (Sb₂S₃ NRs) on reduced graphene oxide (Sb₂S₃ NRs @rGO) as anode materials for SIBs. Based on this work, Sb₂S₃ NRs show a discharge capacity of 564.42 mAh/g at 100 mA/g current density after 100 cycles. In developing a composite with reduced graphene oxide, Sb₂S₃ NRs@rGO present better cycling performance with a discharge capacity of 769.05 mAh/g at the same condition. This achievement justifies the importance of developing Sb₂S₃ NRs and Sb₂S₃ NRs@rGO for SIBs.

Hard carbon has recently attracted significant attention as a promising anode material for sodium‐ion batteries (SIBs) due to its high structural stability and appreciable discharge capacity arising from pore filling of Na ⁺ . In this work, we synthesized hard carbon by carbonizing waste polymers from waste carbon fiber reinforced plastic. During the carbonization process, the heating rate was carefully controlled to exploit the gas bubbles released from the water retained in the polymers, thereby generating a porous hard carbon. The resulting porous hard carbon was subsequently employed as the anode material for SIBs. Taking advantage of the porous architecture, high‐rate electrochemical testing was performed. Notably, the sample heat‐treated at 1600°C exhibited a reversible capacity of 112.4 mAh g ⁻¹ after 700 cycles at 1 A g ⁻¹ and maintained as high as 59.1 mAh g ⁻¹ even after 7000 cycles at 2 A g ⁻¹ , underscoring its remarkable long‐term cycling stability.