Browsing by Author "Nisar, Umair"
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Combustion-Free Synthesis of Lithium Manganese Oxide Composites with CNTs/GNPs by Chemical Coprecipitation for Energy Storage Devices
Tariq, Hanan Abdurehman; Shakoor, Abdul; James, Jeffin; Nisar, Umair; Kahraman, Ramzan ( Qatar University Press , 2020 , Poster)Nano Spinel Lithium Manganese Oxide (LiMn2O4) was distributed properly on carbon nanotubes ( CNTs) and graphene nanoplatelets (GNPs) using chemical coprecipitation method. The original particle size was less than 40 nm, ... -
Fast and Scalable Synthesis of LiNi0.5Mn1.5O4 Cathode by Sol-Gel-Assisted Microwave Sintering
Nisar, Umair; Al-Hail, Sara Ahmad J. A.; Kumar, Petla Ramesh; Abraham, Jeffin James; Mesallam, Saoud M. A.; Shakoor, Rana Abdul; Amin, Ruhul; Essehli, Rachid; Al-Qaradawi, Siham... more authors ... less authors ( John Wiley and Sons Inc , 2021 , Article)High-voltage spinel LiNi0.5Mn1.5O4 (LNMO) is a promising cathode material for high-energy-density and high-power-density lithium-ion batteries (LIBs). The high cost of the currently available LIBs needs to be addressed ... -
Impact of surface coating on electrochemical and thermal behaviors of a Li-rich Li1.2Ni0.16Mn0.56Co0.08O2 cathode
Nisar, Umair; Petla, Ramesh; Jassim Al-Hail, Sara Ahmad; Quddus, Aisha Abdul; Monawwar, Haya; Shakoor, Abdul; Essehli, Rachid; Amin, Ruhul... more authors ... less authors ( Royal Society of Chemistry , 2020 , Article)Lithium-rich layered oxide materials are considered as potential cathode materials for future high-performance lithium-ion batteries (LIBs) owing to their high operating voltage and relatively high specific capacity. ... -
Improved electrochemical performance of SiO2-coated Li-rich layered oxides-Li1.2Ni0.13Mn0.54Co0.13O2
James Abraham, Jeffin; Nisar, Umair; Monawwar, Haya; Abdul Quddus, Aisha; Shakoor, R. A.; Saleh, Mohamed I.; Kahraman, Ramazan; Al-Qaradawi, Siham; Aljaber, Amina S.... more authors ... less authors ( Springer , 2020 , Article)Lithium-rich layered oxides (LLOs) such as Li1.2Ni0.13Mn0.54Co0.13O2 are suitable cathode materials for future lithium-ion batteries (LIBs). Despite some salient advantages, like low cost, ease of fabrication, high capacity, ... -
Recent progress, challenges, and perspectives in the development of solid-state electrolytes for sodium batteries
Haseeb, Ahmad; Kubra, Khadija Tul; Butt, Annam; Nisar, Umair; Iftikhar, Faiza Jan; Ali, Ghulam... more authors ... less authors ( Elsevier , 2023 , Article)Sustainable energy storage technologies, such as all-solid-state sodium batteries, are seen as a promising field of research. The high energy and power densities of all-solid-state sodium batteries, together with their low ... -
Revealing of Core Shell Effect on Frequency-Dependent Properties of Bi-based Relaxor/Ferroelectric Ceramic Composites.
Saleem, Mohsin; Hwan, Lim Dong; Kim, In-Sung; Kim, Min-Soo; Maqbool, Adnan; Nisar, Umair; Pervez, Syed Atif; Farooq, Umer; Farooq, Muhammad Umer; Khalil, Hafiz Muhammad Waseem; Jeong, Soon-Jong... more authors ... less authors ( Nature Research , 2018 , Article)In this study, electromechanical characteristics of (1-x) BiNaTiO-xSrTiO (ST26, x = 0.26)/(1-y) BiNaTiO-ySrTiO (ST10, y = 0.1) (matrix/seed) composites were studied. The ST26 (high relaxor phase) and ST10 (a relaxor ... -
SiO2 Coated Li-rich Layered Oxides-Li1.2Ni0.13Mn0.54Co0.13O2 for efficient energy storage applications
James Abraham, Jeffin; Nisar, Umair; Monawwar, Haya; Abdul Quddus, Aisha; Shakoor, Abdul; Saleh, Mohamed; Kahraman, Ramazan; Al-Qaradawi, Siham; Aljaber, Amina... more authors ... less authors ( Qatar University Press , 2020 , Poster)Lithium ion batteries (LIBs) are attractive for energy storage application. In this regard, lithium rich layered oxides (LLOs), are considered viable cathodes due to their tempting properties such as lower production cost, ... -
Synthesis and electrochemical characterization of Cr-doped lithium-rich Li1.2Ni0.16Mn0.56Co0.08-xCrxO2 cathodes
Nisar, Umair; Amin, Ruhul; Shakoor, Abdul; Essehli, Rachid; Al-Qaradawi, Siham; Kahraman, Ramazan; Belharouak, Ilias... more authors ... less authors ( Springer Nature , 2018 , Article)Lithium-rich layer oxide, Li1.2Ni0.16Mn0.56Co0.08O2 (NMC), is a potential cathode candidate for high-energy density batteries. Issues such as cycling stability, rate performance, and cost are yet to be overcome before ... -
Synthesis and performance evaluation of nanostructured NaFexCr1-X(SO4)2 cathode materials in sodium ion batteries (SIBs)
Nisar, Umair; Gulied, Mona Hersi; Shakoor, R. A.; Essehli, Rachid; Ahmad, Zubair; Alashraf, Abdullah; Kahraman, Ramazan; Al-Qaradawi, Siham; Soliman, Ahmed... more authors ... less authors ( Royal Society of Chemistry , 2018 , Article)This research work focuses on the synthesis and performance evaluation of NaFexCr1-X(SO4)2 (X = 0, 0.8 and 1.0) cathode materials in sodium ion batteries (SIBs). The novel materials having a primary particle size of around ... -
Understanding the Nature of Capacity Decay and Interface Properties in Li//LiNi0.5Mn1.5O4 Cells by Cycling Aging and Titration Techniques
Al-Hail, Sara Ahmad J.A.; Amin, Md Ruhul; Petla, Ramesh Kumar; Nisar, Umair; Essehli, Rachid; Ahzi, Said; Belharouak, Ilias... more authors ... less authors ( American Chemical Society , 2020 , Article)The spinel structure LiNi0.5Mn1.5O4 (LNMO) is a propitious cathode material for next-generation lithium-ion batteries for fast charge-discharge applications, but its capacity decay mechanism and rate-limiting process are ...