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Designing ultrathick and hierarchical electrodes is effective to deal with the challenge of high areal capacity and high power density for lithium-ion batteries (LIBs) manufacturing. Here, a thick electrode with hierarchical porous and multidimensional conductive network is fabricated by 3D printing technology, in which both the conducting polymer of poly(3,4-ethylene dioxythiophene):polystyrene sulfonate (PEDOT:PSS) and graphene oxide (GO) play the dual roles as binders and conductive agents. As a consequence, the 3D-printed thick electrode (∼900 μm) with a mass loading of ∼47 mg/cm2 exh...

TiO2-based materials are considered to be the promising anodes of sodium-ion batteries (NIBs) because of their high safety and good stability. However, their low specific capacity and high safety operating voltage plateau impose a severe challenge for high energy density batteries. Herein, interconnected micro-sheets consisting of carbon nanotubes and sulfur doped TiO2 (CNT/S-TiO2) are synthesized via an ultrasonic process and subsequent calcination, enabling the fabrication of high-performance material. The utilization of SWCNT overcomes the structure instabilities during electrode preparatio...