Farjana Jaishmin Sonia

Farjana Jaishmin Sonia
Indian Institute of Technology Bombay | IIT Bombay · Department of Metallurgical Engineering & Materials Science Including Corrosion Science & Engineering

M.Sc.

About

25
Publications
4,665
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396
Citations
Citations since 2017
19 Research Items
372 Citations
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100

Publications

Publications (25)
Article
Full-text available
Tailoring the physicochemical properties of graphene through functionalization remains a major interest for next‐generation technological applications. However, defect formation due to functionalization greatly endangers the intrinsic properties of graphene, which remains a serious concern. Despite numerous attempts to address this issue, a compreh...
Article
Full-text available
Contact resistance between electrically connected parts of electronic elements can negatively affect their resulting properties and parameters. The contact resistance is influenced by the physicochemical properties of the connected elements and, in most cases, the lowest possible value is required. The issue of contact resistance is also addressed...
Article
Full-text available
Low cycling stability is one of the most crucial issues in rechargeable batteries. Herein, we study the effects of a simple ultrasound treatment of graphite for the reversible (de)intercalation of a ClO4− anion from a 2.4 M Al(ClO4)3 aqueous solution. We demonstrate that the ultrasound-treated graphite offers the improved reversibility of the ClO4−...
Article
Spectroelectrochemical sensors (SPECSs) sensitive to the least amount of sample are crucial for widespread applications, including early‐stage detection of fatal diseases and other biomedical applications. However, despite the major disadvantage of biomolecule instability on noble metal nanoparticle‐assisted surface‐enhanced SPECSs, designing a sui...
Article
Anion intercalated graphite has achieved tremendous attention for the application as cathode materials in dual-ion batteries due to their high working potentials, reversibility, and low cost. However, the process of anion intercalation into graphite requires high oxidative stability of the electrolytes and high reaction potentials above 1.4 V vs. A...
Article
The chemical vapor deposited (CVD) graphene with large monolayer coverage is preferred for applications over the mechanical cleavage of graphite. Large-area graphene has a lot of potential in electrochemical applications, e.g., as electrodes for supercapacitors, smart windows etc. However, in contrast to the almost perfect cleaved graphene, the CVD...
Article
Graphite intercalation compounds (GICs) are widely known for their remarkable multifold physico-chemical properties and their numerous state-of-the-art applications, such as energy storage, sensors, lubrication, catalysis, magneto-optics, superconductivity, etc. However, the properties of GICs largely depend on the synthesis technique, structure, a...
Article
Full-text available
Recent advancements in isolation and stacking of layered van der Waals materials have created an unprecedented paradigm for demonstrating varieties of 2D quantum materials. Rationally designed van der Waals heterostructures composed of monolayer transition‐metal dichalcogenides (TMDs) and few‐layer hBN show several unique optoelectronic features dr...
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Phototransistors are extensively used in modern technology, including optical communication, imaging, etc. In article number 2000859, Golam Haider, Martin Kalbáč, Yang‐Fang Chen and co‐workers demonstrate that the synergistic effect of graphene's excellent charge mobility, the high absorption of ZnO nanoparticles, and the elasticity of Ag‐nanowires...
Article
The main avenue towards improving cyclic stability of Si-based anodes for Li-ion batteries has been the incorporation of graphene-based ‘buffer’ interlayer. In this context, we bring to the fore a concept concerning the existence of a lower limit to the dimensional scale of Si, below which the effectiveness of graphene-based interlayer towards impr...
Article
Graphenic carbon, as the lower (or nano-) dimensional form of graphitic carbon, is expected to allow lithiation/delithiation of an electrode constituted by the same in lesser time and possess greater specific gravimetric Li-storage capacity, as compared to graphitic carbon. The aforementioned positive aspects of graphenic carbon are expected/predic...
Article
The mechanisms, extent and rate of K-storage in graphenic and graphitic carbons, as direct comparisons with Li-storage in the same structures/materials, in terms of the effects of dimensional scale and presence of surface and exposed edge sites have been brought to the fore via DFT-based simulations, duly complemented and supplemented by experiment...
Article
We report here a systematic study concerning the effects of different Si oxides and sub-oxides (viz., SiO2, Si2O3, SiO, Si2O), in varying contents, as present on the surface of amorphous Si shell of ‘micron-sized’ Si wires (SiMWs), towards the electrochemical behavior as anode material for Li-ion batteries. This has been carried out by exposing the...
Article
The present study reports on the ‘wear damages’ caused at inner surfaces (and sub-surfaces) of extruded zircaloy-4 tube specimens (as half cylinders) during interactive linear reciprocating sliding against outer surfaces of D2 steel half cylinders for different durations (up to 120 s) at high contact pressures (of ~ 1 GPa) in the absence/presence o...
Article
One of the major bottlenecks towards the development of Na-ion battery system is that graphitic carbon (the commonly used anode material for the Li-ion system) is not suitable for use in Na-ion system. Accordingly, in the pursuit to identify and develop suitable anode material for the upcoming Na-ion battery system, we report here the feasibility o...
Article
The feasibility of reversible electrochemical Na-alloying in amorphous silicon (a-Si), along with influences of transport limitations of Na, dimensional aspects of a-Si and usage of few layers graphene (FLG) as interlayer (between a-Si and current collector) on Na-capacities and cyclic stabilities, have been demonstrated here with the use of contin...
Article
Wide differences in the structural features of graphenic carbon, especially in the case of reduced graphene oxides (rGO), are expected to have considerable impacts on the properties; thus leading to...
Article
In order to understand, clarify and provide confirmations in the contexts of the prevalent confusions concerning Li-storage in graphenic carbon (viz. reduced dimensional scale of graphitic carbon), electrochemical lithiation/delithiation has been performed with CVD-grown fairly pristine well-ordered few layers graphene films (FLG; ~7 layers; as mod...
Article
Here we report on the preparation of high quality Cu2ZnSnS4 thin films using single bath electrodeposition process via an optimized deposition potential. X-ray diffraction and Raman analysis validated the formation of kesterite phase of CZTS without any secondary phases at an optimized deposition potential of -1.4 V vs. Ag/AgCl. As a signature of h...
Article
Full-text available
We have fabricated kesterite phase films of Cu2ZnSnS4 (CZTS) using a single bath electrodeposition process followed by sulfurisation. Morphological analysis using SEM shows that the films have densely packed micron size grains. XRD and Raman spectroscopy confirm that grown films are highly crystalline and kesterite in phase. Band gap of electrochem...
Article
Full-text available
The method of generating Pythagorean triples is known for about 2000 years. Though the classical formulas produce all primitive triples they do not generate all possible triples, especially non-primitive triples. This paper presents a direct method to generate all possible triples both primitive and non-primitive for any given number. Then the tech...

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Projects (2)
Project
The presence/absence and composition of the native oxide coating are very critical towards the reversibility of electrochemical performance of Si-based anodes (Si nanowires in this study) for Li-storage application, especially during the initial electrochemical cycles. On the other hand, silicon (Si) which was believed to be inactive towards Na-storage, we have demonstrated that Na-alloying in Si is feasible but it is a transport limited process and also depends upon the material form (amorphous/crystalline). The transport limited issues can be suppressed by the reduction in the dimension of Si nanowires (viz., the thickness of amorphous shell).
Project
A thin layer of different materials (i.e., graphene, alloys, polymer etc.) between the active electrode and current collector minimizes the stresses and improves electrochemical and mechanical stabilities of electorde materials.