<i>In situ</i> tailoring bimetallic–organic framework-derived yolk–shell NiS<sub>2</sub>/CuS hollow microspheres: an extraordinary kinetically pseudocapacitive nanoreactor for an effective sodium-ion storage anode
Wenxi Zhao, Xiaodeng Wang, Xiaoqing Ma, Luchao Yue, Qian Liu, Yonglan Luo, Yang Liu, Abdullah M. Asiri, Xuping Sun
Abstract
Yolk–shell NiS<sub>2</sub>/CuS hollow microspheres as an extraordinary kinetically pseudocapacitive nanoreactor for sodium-ion batteries manifest superb Na<sup>+</sup>-storage capability, including an ultrahigh ICE of 94.0%, remarkable specific capacity of 410.9 mA h g<sup>−1</sup> after 750 cycles at 2.0 A g<sup>−1</sup>, excellent rate capability, and prolonged cyclability in terms of a remarkable retention of 283.4 mA h g<sup>−1</sup> even after 4200 cycles at 20.0 A g<sup>−1</sup>.
Topics & Concepts
NanoreactorBimetallic stripMaterials scienceMicrosphereIonAnodeChemical engineeringSodiumNanotechnologyNuclear chemistryChemistryNanoparticlePhysical chemistryOrganic chemistryMetalElectrodeMetallurgyEngineeringAdvancements in Battery MaterialsSupercapacitor Materials and FabricationAdvanced battery technologies research