High-capacity polymer electrodes for potassium batteries

Abstract

We synthesized and investigated a series of six promising polymeric electrode materials, which incorporate multiple redox-active groups enabling high specific discharge capacity and energy density in potassium half-cells. All investigated...

Advancements in cathode materials for potassium-ion batteries: current landscape, obstacles, and prospects

“…129 Moreover, a wide range of organic materials, including N-containing heteroatomic compounds, organosulphur compounds, quinone/phenoxide derivatives, carbonyl compounds, polymeric arylamines, and conductive polymers, hold potential for investigation to design cathode materials with both high capacity and high voltage. 139,[153][154][155][156][157] Furthermore, the pursuit of organic molecules with high rate capability and electronic conductivity can be anticipated, for instance, through the use of (i) conjugated polymer poly(quinones) with electron-withdrawing groups and (ii) p-conjugated aromatic compounds comprising heteroatoms (such as S, N, and O) with lone electron pairs.…”

Influence of the Lithium Cation Desolvation Process at the Electrolyte/Electrode Interface on the Performance of Lithium Batteries

“…The scanning electron microscopy (SEM) images of PTTA were obtained using a ZEISS LEO Supra25 scanning autoemission electron microscope (Carl Zeiss AG, Oberkochen, Germany). The specific surface area of this powder measured in [21] by the Brunauer-Emmett-Teller (BET) method is 27.2 m 2 g −1 , and the calculated pore volume is 0.14 cm 3 g −1 .…”

“…In this research, we used the polymer PTTA, a polymeric condensation product of cyclohexane-1,2,3,4,5,6-hexone (triquinoyl) with benzene-1,2,4,5-tetramine tetrahydrochloride, which was synthesized and studied in detail in [20][21][22].…”

Solvothermal Polymerization and Electrochemical Behavior of Conjugated Polyimide with High Electronic Conductivity and Low Solubility

“…However, such small molecules are easily dissolved in an organic electrolyte, leading to a low energy density and poor cycle stability, and the low electronic conductivity leads to poor utilization of the active material [5–7] . Polymerization of small molecules into conjugated polymer electrode materials may solve all these problems at the same time [8,9] …”

“…[5][6][7] Polymerization of small molecules into conjugated polymer electrode materials may solve all these problems at the same time. [8,9] The structurally diverse and controllable nature of polymers enables one to obtain the optimized structures that will further improve the electrochemical properties of electrode materials. Examples include the introduction of electron-donating or electron-absorbing substituent groups to regulate the discharge voltage, [10,11] the use of different precursors to prepare porous structures that promote ion transport, and the fabrication of self-supporting flexible electrodes.…”