Abstract
Extra interface capacity derived from the surface pseudo-capacitive effect has been widely reported and considered an important role in enhancing excellent kinetics in the system of transition metal oxides. However, outstanding pseudo-capacitive effect is seldom found in other kind of oxides or systems. In this work, we strategically use cobalt phthalocyanine decorated tin oxide nanotubes to fabricate [email protected]2 amorphous/polycrystalline composite with enhanced extra lithium-ion storage capability. Amazing interface Li-ion storage in the configured [email protected]2 is successfully triggered, and outstanding pseudo-capacitive effect is demonstrated as an important factor to improve the overall capacity as well as kinetics of the composite electrode. The reversible capacity of [email protected]2 could be maintained to 950 mA h g−1 after 400 cycles, comparing with 500 mA h g−1of CoPPc and 250 mA h g−1 of SnO2 under the same conditions.
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