Preparation and properties as positive electrodes of PANI–LiNi0.8Co0.2O2 nanocomposites

Copper vanadates/polyaniline composites as anode materials for lithium-ion batteries

“…Fig. 28 23 To gain an insight view for the reason of such excellent performance of CVO/PANI composites, electrochemical impedance spectroscopy (EIS) measurements of the CVO/PANI and CVO electrodes were carried out. The initial discharge and charge capacities of Cu 5 (VO 4 ) 2 (OH) 4 $H 2 O/PANI composite are 1237.6 and 757.5 mA h g À1 , respectively, with the Coulombic efficiency of 61.2%.…”

Preparation and study as positive electrode of Li0·33La0·56TiO3–PANI nanocomposite

“…For this exploratory work, the oxide/PANI wt/wt ratio was established according to that reported in LiNi 0?8 Co 0?2 O 2 -PANI. 5 The clusters of oxide particles were disintegrated and dispersed in the monomer with the aid of an ultrasound liquid processor (600 W) with a probe working at 240 kHz. The resulting stable suspension was dispersed by an atomiser over 300 mL of HCl and ammonium peroxodisulphate mixture solution at 0uC during 1 h under magnetic stirring.…”

“…All the above mentioned changes improve the capacity retention during cycling and performance at high discharge currents. [3][4][5] Moreover, the nanotechnology age extends the application potentialities of this type of material since the extremely small size particles of the oxide counterpart can be maintained disperse in a conducting polymeric phase, having this way a considerable influence in the electrochemical behaviour of the resulting composite. 3,[5][6][7] In this context, the present work introduces the preparation and characterisation of a new Li 0?33 La 0?56 TiO 3 -polyaniline (PANI) nanocomposite in which the good ionic transport of Li z ions of the oxide nanoparticles is satisfactorily combined with the electronic conductivity of conducting PANI, both at room temperature.…”

“…[12][13][14][15][16][17][18][19] Its doping with lithium salts, organic and inorganic acids as well as diverse transition metal oxides has been reported. 5,[16][17][18][19][20][21][22] In all these investigations, the researchers observed the possibility to form conducting PANI partially or even fully doped due to the existence of electrostatic, covalent or hydrogen interactions with the introduced ions or nano-and microsolid oxide particles. When nanocomposites were prepared, the doping with inorganic redox compound, such as LiFePO 4 , 21 gives rise to suitable systems for electrochemical Li intercalation.…”

“…Hence, the present work explores the possibility to prepare electroactive Li 3x La 2/32x TiO 3 -PANI nanocomposites based on the combination of Li 0?33 La 0?56 TiO 3 oxides with PANI and to evaluate their electrochemical behaviour as cathode for Li rechargeable batteries. To accomplish this, we have applied a synthetic method previously developed for us 5 for the preparation of homogeneous and efficient nanocomposites based on LiNi 0?8 Co 0?2 O 2 -PANI, which allowed a low agglomeration degree of LiNi 0?8 Co 0?2 O 2 nanosized particles in strong interaction with the conducting polymer (PANI), improving the performance of these materials used as positive electrodes.…”