Abstract Rechargeable alkaline batteries (RABs) have received remarkable attention in the past decade for their high energy, low cost, safe operation, facile manufacture, and eco-friendly nature. To date, expensive electrode materials current collectors were predominantly applied RABs, which limited real-world efficacy. In present work, we propose a scalable process to utilize electronic waste (e-waste) Cu wires as cost-effective collector high-energy wire-type RABs. Initially, vertically...

Pseudo-capacitive negative electrodes remain a major bottleneck in the development of supercapacitor devices with high energy density because electric double-layer capacitance does not match pseudocapacitance corresponding positive electrodes. In present study, strategically improved Ni-Co-Mo sulfide is demonstrated to be promising candidate for supercapattery due its sustained pseudocapacitive charge storage mechanism. The behavior enhanced when operating under current through addition...

In recent years, environmental pollution is a major global concern and adversely affecting human health the economy. The properties of soil are exceptionally complex, which makes remediation treatment more challenging expensive. this aspect, sustainable materials (biomaterials, biochar, composites) present an effective efficient solution. Exactly, biochar its relative composites can achieve novel with addition metal oxides, surface agents, nano-material. review study provides quantitative...

Currently, one-dimensional nanostructured binary metal oxides attract a great attention in supercapacitors (SCs) application due to their rapid charge transportation. In this respect, different nanostructures of FeCo2O4 are designed by simply tuning the reaction temperature hydrothermal synthesis. These directly grown on flexible stainless steel mesh and further applied as binder-free electrodes for SCs. The systematic study is carried out confirm relation between surface characteristics...

Abstract Nanofabrication using a “bottom‐up” approach of hybrid electrode materials into well‐defined architecture is essential for next‐generation miniaturized energy storage devices. This paper describes the design and fabrication reduced graphene oxide (rGO)/polyoxometalate (POM)‐based their successful exploitation asymmetric supercapacitors. First, redox active nanoclusters POMs [phosphomolybdic acid (PMo 12 ) phosphotungstic (PW )] were uniformly decorated on surface rGO nanosheets to...

Abstract Designing of multicomponent transition metal oxide system through the employment advanced atomic layer deposition (ALD) technique over nanostructures obtained from wet chemical process is a novel approach to construct rational supercapacitor electrodes. Following strategy, core–shell type NiO/Co 3 O 4 nanocone array structures are architectured Ni‐foam (NF) substrate. The high‐aspect‐ratio Co nanocones hydrothermally grown NF following precision controlled shell NiO considering as...

To obtain a supercapacitor with remarkable specific capacitance and rate performance, cogent design synthesis of the electrode material containing abundant active sites is necessary. In present work, scalable strategy developed for preparing 2D-on-2D nanostructures high-energy solid-state asymmetric supercapacitors (ASCs). The self-assembled vertically aligned microsheet-structured 2D nickel pyrophosphate (Ni2 P2 O7 ) decorated amorphous bimetallic cobalt hydroxide (NiCo-OH) to form...

Abstract The large‐scale application of supercapacitors (SCs) for portable electronics is restricted by low energy density and cycling stability. To alleviate the limitations, a unique interface engineering strategy suggested through atomic layer deposition (ALD) nitrogen plasma. First, commercial carbon cloth (CC) treated with plasma later inorganic NiCo 2 O 4 (NCO)/NiO core–shell nanowire arrays are deposited on plasma–treated CC (NCC) to fabricate ultrahigh stable SC. An ultrathin NiO NCO...

Two essential characteristics that are required for hybrid electrocatalysts to exhibit higher oxygen and hydrogen evolution reaction (OER HER, respectively) activity a favorable electronic configuration sufficient density of active sites at the interface between two materials within hybrid. In present study, electrocatalyst is introduced with novel architecture consisting coral-like iron nitride (Fe2 N) arrays tungsten (W2 N3 ) nanosheets satisfies these requirements. The resulting W2 /Fe2 N...

A phosphorus-doped nickel–cobalt boride (P-NCB) electrocatalyst designed based on a unique metal–metalloid–nonmetal configuration results in solitary structures with excellent bifunctional properties for the HER and OER under strongly alkaline conditions.

Abstract A new ruthenium cobalt oxide (RuCo 2 O 4 ) with a unique marigold‐like nanostructure and excellent performance as an advanced electrode material has been successfully prepared by simple electrodeposition (potentiodynamic mode) method. The RuCo marigolds consist of numerous clusters ultrathin mesoporous nanoflakes, leaving large interspace between them to provide electrochemically active sites. Strikingly, this provided electrochemical in terms high energy‐storage capacitance (1469 F...