A novel method to adjust the composition of a material while maintaining its morphology was described in this study. Nickel sulfide, investigated work, found be useful as high surface area electrode for supercapacitor applications. First, nest-like Ni3S2@NiS composite with 1D nanorod structural unit synthesized by simultaneously using Ni foam template and source through one-step situ growth method. Co Se ions, which respectively acted beneficial cation anion, were successfully introduced...

In this paper, the design, synthesis, and measurement of a new hierarchically structured series NixCo1-xS1.097 electroactive materials are reported. The were synthesized through an ion-exchange process using CoS1.097 as precursors, strategy utilizing synergistic effect double metal ions was developed. Two complementary used to enhance performance electrode materials. specific capacitance continuously improved by increasing nickel ion content, electric conductivity also enhanced when cobalt...

Herein we fabricated a series of flexible electrode materials with nickel foam as partly self-sacrificial template by an <italic>in situ</italic> growth solvent thermal method.

It is recognized that an effective strategy to promote the industrialization of supercapacitors enhance ion and electronic conductivities electrode materials.

Portable electronics and electric or hybrid vehicles are developing in the trend of fast charge long mileage, which ask us to design a novel electrode with sufficient electronic ionic transport channels at same time. Herein, we fabricate uniform hollow-urchin-like Ni1/3Co2/3(CO3)1/2(OH)·0.11H2O material through an easy self-generated resacrificial template method. The one-dimensional chain-like crystal structure unit containing metallic bonding intercalated OH– H2O endow this abundant...

Studies on supercapacitor devices constitute one of the most meaningful research topics in hastening industrialization electrode materials. Herein, uniform nanosheet-based carambola-like Ni@Ni1.5Co1.5S2 was successfully synthesized and assembled into an asymmetric device with a high specific capacitance 109 F g–1 at current density 1 A g–1. The large mass loading this device, ∼20 mg cm–2, is compatible industry standard considerably higher than those obtained previous reports....

Magnesium (Mg)-ion batteries with low cost and good safety characteristics has attracted a great deal of attention recently. However, the high polarity slow diffusion Mg2+ in cathode material limit development practical Mg materials. In this paper, an anion-rich electrode material, NiS2 , its composite Ni-based carbon nanotubes (NiS2 /NCNTs) are explored as materials for Mg-ion batteries. These /NCNTs excellent storage property is synthesized by simple situ growth nanoparticles on NCNTs....

Improving the self-conductivity and structural stability of electrode materials is a key strategy to improve energy density, rate performance, cycle life supercapacitors. Controlled intercalation ethyl carbamate (CH3CH2OCONH2) as rivet between Ni-Co hydroxide layers can be used obtain sufficient ion transport channels robust hydrangea-like α-Ni1/3Co2/3(OH)2 (NC). Combining improved electronic conductivity offered by coexistence Ni2+ Co2+ optimizing itself addition carbon nanotubes (CNTs)...

Covalent organic frameworks (COFs) have developed as a precisely tailor-made platform for integrating different functionalities into the via reticular chemistry. In this work, two COFs with similar topology and skeleton but charge state over are designed applied to clarify contributions of cationic groups output performance triboelectric nanogenerator (TENG). The functional centers distributed alternately both sides pore channels. COF possesses unconventional electrostatic functions due...

Nanostructures composed of transition metal sulfides (TMS) exhibit excellent electrochemical properties, rendering them well‐suited for use in supercapacitor applications. Nevertheless, the conventional synthesis method restricts nanostructures TMS and investigation mechanism. In view above considerations, we propose a novel method: liquid‐assisted sintering. This approach retains advantages solvothermal nanomaterials while providing insight into reaction mechanism avoiding densification...

Novel hierarchical wool-ball-like copper sulfide (CuS) microflowers with a three-dimensional (3D) porous framework were successfully synthesized by the direct reaction of sulfur powder using one-pot in situ growth method at low temperature (60 °C). The CuS covered firmly surface 3D framework. formation mechanism was examined detail adjusting amount hydrochloric acid and time. Most importantly, chemical composition altered Se exchange without changing their morphology structure. In this way,...

Selection of the friction electrode materials is crucial to performance a triboelectric nanogenerator (TENG). In present study, metal-organic coordination complex containing organosulfonate counteranions with electron-donating ability was synthesized through coordination-driven self-assembly approach under mild reaction conditions and chosen as positive material construct nanogenerator, exhibiting high-output peak value short circuit current density 98.6 μA an output voltage 1180 V. As...

Energy storage ability is determined by the ion arrangement and electron transfer at electrode–electrolyte interface, which depends on combining materials that form complex heterogeneous interfaces. Herein, we developed a nitrogen-doped (N-doped) in situ carbon-coated NiO quantum dots/Ni (∼5 nm) with multilevel interface as supercapacitor electrode simple method based coordination reaction. The coated dots heterojuction interfaces between Ni optimizing electronic structures provide large...

Abstract The practical implementation of supercapacitors is hindered by low utilization and poor structural stability electrode materials. Herein, to surmount these critical challenges, a three-dimensional hierarchical α-Co(OH) 2 /α-Ni(OH) heterojunction nanorods are built in situ on Ni foam through mild two-step growth reaction. unique lamellar crystal structure abundant intercalated anions α-M(OH) (M = Co or Ni) the ideal electronic conductivity construct numerous cross-linked ion electron...

Abstract The construction of heterojunctions in composite materials to optimize the electronic structures and active sites energy is considered be promising strategy for fabrication high-performance electrochemical devices. In this paper, a one-step, easy processing cost-effective technique generating with was successfully developed. containing Ni 3 S 4 , NiS, N-doped amorphous carbon (abbreviated as /NiS/NC) multiple heterojunction nanosheets are synthesized via space-confined effect molten...

Large-scale uniform urchin-like nickel sulfide (NiS) was successfully synthesized by a solvothermal method under moderate conditions. A mixture of ethylenediamine and ethylene glycol used as solvent. complex obtained using simple precursor. Based on the results for (NiS), multiple sulfides were based morphology replication. Outstanding features such composition regulation, i.e., main physical properties product can be adjusted mild conditions without changing morphology. Multiple through...

Cost efficient NaCl has been successfully used to fabricate 1D Ni(OH) 2 nanorods and design two-solute electrolyte, which together driven the aqueous-based supercapacitor with excellent electrochemical performance at −30 °C.

Novel GLNS-NiS nanosheets with excellent electrochemical performance were facilely synthesized by an innovative solvent-free compound-direct reaction strategy.

Rechargeable magnesium batteries are expected to be the next generation of energy storage devices. Therefore, it is great significance develop low-cost and long-life (Mg) electrode materials. However, traditional method synthesizing materials complicated, difficult remove potentially dangerous impurities. In this study, without adding any additional solvent, crystal water in reactant provides a liquid environment directly for reaction, such that whole reaction could carried out safely...

Porous Co 1− x S@CNT composites were prepared using simple materials ice crystals as templates. The composite material has a porous three-dimensional skeleton structure and is highly reversible an electrode for Mg 2+ /Li + hybrid cells.