Multifarious Heteroatom-doped/enriched Carbon-based Materials for Energy Storage Prospectives: A Crucial Insight

Chemically doped carbon-based candidates have emerged as a significant driving force across multifarious research domains including ORR, electrochemical sensing, Energy storage and conversion, and solar cell technologies, etc., This comprehensive review takes a critical stance, shedding light on the exceptional supercapacitance performance found within heteroatom-doped/enriched carbon derivatives. This includes an array of candidates such as graphene, carbon nanotubes, carbon nanofibers, boron carbonitride, g-C3N4, mesoporous carbon, ordered mesoporous carbon, and oxygen-enriched porous carbon. The review delves into diverse synthetic methodologies, encompassing chemical vapor deposition, thermal annealing, hydrothermal, microwave routes, and arc discharge techniques for each of these carbon-based materials. Furthermore, an in-depth exploration of the underlying electrochemical mechanisms governing supercapacitive performance is provided. Notably, the synthesis and energy storage proficiency of heteroatom-enriched materials like g-C3N4 and BCN are meticulously scrutinized. The influence of heteroatom doping on crucial characteristics like wettability, and porosity is deeply examined, boosted by compelling empirical substantiation. Adding intrigue, the merits, and drawbacks inherent to each synthetic approach are thoughtfully presented systematically. As a result, this article stands as a highly valuable resource, offering substantial support and insightful information tailored to young researchers. By furnishing a panoramic survey of diverse synthetic avenues and an in-depth analysis of supercapacitive performances across distinct classes of heteroatom-doped/enriched carbon materials, we aspire for this work to become an indispensable reference

Boosting Cathodic Performance of Ni-rich NCM811 via Uric Acid Derived Nitrogen-doped Carbon-Coating in Lithium-Ion Batteries

The nickel-rich layered Li[Ni0.8Co0.1Mn0.1]O2, popularly known as NCM811, is considered a high-performance cathode material in lithium-ion batteries (LIBs) due to its high specific capacity and energy density. However, because of its poor structural stability, it suffers from long-run performance in LIBs. The surface coating technique can enhance the performance of the NCM811 cathode by preventing its surface degradation during prolonged contact with electrolytes. Herein, we report a uric acid-derived nitrogen-doped carbon-coated NCM811 cathode to enhance the cathodic performance. The materials were prepared by a facile one-step calcination in which different weights of uric acid are mixed well with NCM811 through ball milling followed by sintering. The XRD peaks confirm the formation of a pure phase in both the bare and modified NCM811 materials. The morphological characteristics and coating thickness are observed by FE-SEM and FE-TEM analysis, respectively. Electrochemical characterizations such as galvanostatic charge-discharge (GCD), cyclic performance, and rate capability studies show that the 0.1-NCM811 material can effectively tailor the electrochemical performance of the cathode in LIBs. The capacity retention of 0.1-NCM811 material is 92.7% and 85.8% at 100 cycles in 0.1C and 300 cycles in 1C, respectively. The improved electrochemical performance of coated NCM811 cathode is associated with the effective coating of nitrogen-doped carbon which can hinder the electrode dissolution process while amplifying the ionic conductivity

Processing of Carbon-Based Nanomaterials for the Removal of Pollutants from Water/Wastewater Application

In both the inorganic and organic worlds, carbon-based nanomaterials, such as benzene, diamond, graphite, fullerene, and carbon nanotubes, are abundant. In science laboratories, carbon is the focal point of activity. In this overview, the synthesis, characteristics, and several uses of graphene—including energy conversion, energy storage, electronics, and biosensing—were explored with a focus on ecologically friendly production techniques. This article also discusses recent advancements in the detection and treatment of organic contaminants and heavy metals utilizing nanomaterials. In this article, we outline some recent developments in the creation of innovative nanomaterials and nanostructures and methods for treating organic contaminants and heavy metals in water. The essay presents the current state of the field and, in our opinion, should be helpful to anybody interested in nanomaterials and related materials