Advanced cathode materials and efficient electrolytes for rechargeable batteries: practical challenges and future perspectives

Khan, Safyan Akram; Ali, Shahid; Saeed, Khalid; Usman, Muhammad; Khan, Ibrahim

doi:10.1039/c9ta00581a

Cited by 49 publications

(35 citation statements)

References 124 publications

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“…Theoretically, electrons are loaded from the electrode to the electrode-electrolyte interface for storing and releasing electrical energy in the electrolyte [19]. Electrochemical condensers (ECs) and batteries are two separate energy storage systems, where they both store electricity by means of electrochemical methods while using two different processes [20].…”

Section: Introductionmentioning

confidence: 99%

A Review of Supercapacitors: Materials Design, Modification, and Applications

et al. 2021

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Supercapacitors (SCs) have received much interest due to their enhanced electrochemical performance, superior cycling life, excellent specific power, and fast charging–discharging rate. The energy density of SCs is comparable to batteries; however, their power density and cyclability are higher by several orders of magnitude relative to batteries, making them a flexible and compromising energy storage alternative, provided a proper design and efficient materials are used. This review emphasizes various types of SCs, such as electrochemical double-layer capacitors, hybrid supercapacitors, and pseudo-supercapacitors. Furthermore, various synthesis strategies, including sol-gel, electro-polymerization, hydrothermal, co-precipitation, chemical vapor deposition, direct coating, vacuum filtration, de-alloying, microwave auxiliary, in situ polymerization, electro-spinning, silar, carbonization, dipping, and drying methods, are discussed. Furthermore, various functionalizations of SC electrode materials are summarized. In addition to their potential applications, brief insights into the recent advances and associated problems are provided, along with conclusions. This review is a noteworthy addition because of its simplicity and conciseness with regard to SCs, which can be helpful for researchers who are not directly involved in electrochemical energy storage.

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Section: Introductionmentioning

confidence: 99%

A Review of Supercapacitors: Materials Design, Modification, and Applications

et al. 2021

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“…Meeting the growing global energy demands is one of the future challenges because the current energy resources are coming to an end in the near future. In addition, the use of fossil fuels has a negative impact on the environment due to CO 2 emission that contributes to global warming [1–3] . The environmental problems have stimulated the interest in exploring new energy horizons [4, 5] .…”

Section: Introductionmentioning

confidence: 99%

A High‐Performance Asymmetric Supercapacitor Based on Tungsten Oxide Nanoplates and Highly Reduced Graphene Oxide Electrodes

Ashraf

Shah

Khan

et al. 2021

Chemistry A European J

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Tungsten oxide/graphene hybrid materials are attractive semiconductors for energy‐related applications. Herein, we report an asymmetric supercapacitor (ASC, HRG//m‐WO3 ASC), fabricated from monoclinic tungsten oxide (m‐WO3) nanoplates as a negative electrode and highly reduced graphene oxide (HRG) as a positive electrode material. The supercapacitor performance of the prepared electrodes was evaluated in an aqueous electrolyte (1 m H2SO4) using three‐ and two‐electrode systems. The HRG//m‐WO3 ASC exhibits a maximum specific capacitance of 389 F g−1 at a current density of 0.5 A g−1, with an associated high energy density of 93 Wh kg−1 at a power density of 500 W kg−1 in a wide 1.6 V operating potential window. In addition, the HRG//m‐WO3 ASC displays long‐term cycling stability, maintaining 92 % of the original specific capacitance after 5000 galvanostatic charge–discharge cycles. The m‐WO3 nanoplates were prepared hydrothermally while HRG was synthesized by a modified Hummers method.

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“…Because advanced Li-ion batteries require electrochemical stability in the potential range of 0-5.0 V vs. Li/Li + for full charge-discharge of positive and negative electrode materials, improvement of the oxidation resistance of electrolytes in Li-ion batteries have been studied. [29][30][31][32][33][34][35][36][37] Our previous molecular design for LC electrolytes in Li-ion batteries 9 was not sufficient in terms of electrochemical stability.…”

Section: Introductionmentioning

confidence: 95%

Nanostructured liquid-crystalline Li-ion conductors with high oxidation resistance: molecular design strategy towards safe and high-voltage-operation Li-ion batteries

et al. 2020

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Advanced cathode materials and efficient electrolytes for rechargeable batteries: practical challenges and future perspectives

Abstract: Increasing dependence on rechargeable batteries has led researchers to investigate the characteristics of materials and various crucial parameters, which could enhance their overall performance in terms of stability, charge density, and durability.

Cited by 49 publications

References 124 publications

A Review of Supercapacitors: Materials Design, Modification, and Applications

A Review of Supercapacitors: Materials Design, Modification, and Applications

A High‐Performance Asymmetric Supercapacitor Based on Tungsten Oxide Nanoplates and Highly Reduced Graphene Oxide Electrodes

Nanostructured liquid-crystalline Li-ion conductors with high oxidation resistance: molecular design strategy towards safe and high-voltage-operation Li-ion batteries

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