Template Synthesis of Shape-Tailorable NiS₂ Hollow Prisms as High-Performance Supercapacitor Materials

Abstract

Uniform NiS2 hollow nanoprisms have been controllably synthesized by a facial sacrificial template method including two-step refluxed reactions. The morphology of the hollow NiS2 prisms can be easily tailored by the low cost nickel complex template. With unique hollow structure, efficient electron, and ion transport pathway as well as single crystal structure, the NiS2 hollow prisms electrode exhibits excellent pseudocapacitive performance in LiOH electrolyte. It can deliver a specific capacitance of 1725 F g(-1) at a current density of 5 A g(-1) and 1193 F g(-1) even at a current density of 40 A g(-1). Furthermore, the materials also present an amazing cycling stability, that is, the specific capacitance can increase from 1367 F g(-1) to 1680 F g(-1) after 10,000 cycles of charge-discharge at the current density of 20 A g(-1).

Triazine‐based organic polymers@SiO2 nanospheres for sensitive solid‐phase microextraction of polycyclic aromatic hydrocarbons

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Mesoporous Ce2Zr2O7/PbS Nanocomposite with an Excellent Supercapacitor Electrode Performance and Cyclic Stability

“…Two types of materials are used for fabrication of SCs electrodes, for instance, carbon based material, transition metal oxide/sulfide and conducting polymers. EDLC mainly uses carbon based materials, while pseudocapacitors utilizes transition metal oxides/sulfides and conducting polymers for electrodes ,,. Due to improved energy storage mechanism, the specific capacitance (Csp) of pseudocapacitor materials is greater than EDLC .…”

Self‐Templated Synthesis of Cuprous Oxide Nanofiber‐Assembled Hollow Spheres for High‐Performance Electrochemical Energy Storage

“…However, it is not easy to create hollow structure through self‐assembly method. Conventionally, hard or soft template is used as a core, around which the target material is deposited and then the template is removed ,. The complicated process would undoubtedly cause some issues, such as not complete removal of core structure, introducing impurity to the shell material, weakening shell structure during etching.…”