Binder-Free Charantia-Like Metal-Oxide Core/Shell Nanotube Arrays for High-Performance Lithium-Ion Anodes.

摘要: The high performance of lithium-ion anodes relies largely on a scrupulous construction nano-architectures and smart hybridization the bespoke active materials. We present powerful two-step seed-free solution-based method for fabrication binder-free hierarchical charantia-like TiO2/Fe2O3 hollow core/shell nano-arrays, which were directly grown carbon cloth substrates with ultrahigh mass-loading. three-dimensional porous architecture direct contact to CC current collector ensure an efficient electronic pathway. carambola-like TiO2 framework effectively protects arrays from collapse its negligible volume change upon cycling, while self-assembled α-Fe2O3 nano-spheres guarantee large capacity area electrolyte. electrochemical measurements demonstrate that this flexible exhibits remarkably good cycle performance, reversible capacity, excellent rate capability. CC/TiO2/Fe2O3 nano-arrays still maintain 875 mAh g-1 after 200 cycles at mAg-1. facile, cost-effective, scalable strategy has broad prospects in implementation wearable high-performance energy storage devices.