Rechargeable Lithium-Ion Battery Based on a Cathode of Copper Hexacyanoferrate

Abstract

In this work, the performance of copper(II) hexacyanoferrate(III) (CuHCF) as a cathode material for lithium-ion batteries was studied. The compound was synthesized by a precipitation reaction in aqueous solution in a closed system. The morphology and structure show nanoparticles with sizes between 40 and 70 nm with a high agglomeration and a crystalline phase with a cubic structure, respectively. The material exhibited a stable performance with a working potential of around 3.6 V vs Li+/Li and a decrease in the charge transfer resistance due to increased ionic conductivity. The gravimetric capacity obtained is near 60 mAh g−1 during 300 cycles at a rate of C/20, close to the practical capacity. Considering its electrochemical performance, CuHCF could be a promising cathode material for lithium-ion batteries.

Cation Co‐intercalation in Potassium Copper(II) Hexacyanoferrates

“…The model is applied to experimental data on the insertion of alkali ions into K‐containing copper(II) hexacyanoferrate (KCuHCF) in contact with Li + , Na + , and K + ‐containing DMSO electrolytes. These systems, of application in lithium‐ion batteries, [10] have been studied combining cyclic voltammetric (CV), OCP and chronoamperometric (CA) measurements.…”

“…[1,2] Among others, metal hexacyanometallates (MHCMs) have received considerable attention due to their easy preparation, high durability and high ionic permeability. [3,4] MHCMs been proposed for aqueous [5][6][7] and nonaqueous [8][9][10] metal-ion batteries, for recycling lithium residuals [11] and energy production exploiting salinity differences. [12,13] The ion-insertion electrochemistry of MHCMs, in particular of Prussian blue (PB), has been widely studied.…”

“…[18] Among them, Ni-and Cu hexacyanoferrates are of interest due to the flexible insertion of M centers, producing, interesting performance as cathode materials for alkali-ion batteries. [5][6][7][8][9][10]19] In this context, the modeling of the ion insertion of MHCMs is of interest in order to achieve a systematic view of the factors influencing these processes including the coexistence of different redox-active metal centers, [20] the determination of diffusion coefficients, [21] modeling charge/discharge processes [22] and formation of bilayered systems [23] and phase transistions. [24] and, more reently, the intercalation from solutions containing two species of cations.…”

“…[25,40,41] In the current report, it is presented a theoretical description of reductive/oxidative ion insertion processes for these cases based on the model of Malaie et al [37] and considering that of Erinmwingbovo et al [25] The model is applied to experimental data on the insertion of alkali ions into K-containing copper(II) hexacyanoferrate (KCuHCF) in contact with Li + , Na + , and K + -containing DMSO electrolytes. These systems, of application in lithium-ion batteries, [10] have been studied combining cyclic voltammetric (CV), OCP and chronoamperometric (CA) measurements.…”

Estudio de análogos de azul de Prusia como materiales para baterías de intercalación de ion potasio: efecto del metal externo sobre el comportamiento electroquímico

“…Por otro lado, se observa que durante la extracción de iones K + desde la estructura de CuHCF y NiHCF, tales iones presentan o experimentan dos ambientes químicos diferentes, relacionado con la aparición de pre-picos, es decir picos antes del proceso principal de oxidación que se lleva a cabo alrededor de 3.51 V vs K + /K 0 para CuHCF (Figura 28a) y 3.48 V vs K + /K 0 para NiHCF (Figura 28b), comportamiento similar a lo observado para PBAs en presencia de iones Li + [96][97]99].…”