Effect of composite conductive agent on internal resistance and performance of lithium iron phosphate batteries

Cross-Linked Ethylene Carbonate-based Copolymer Composite Electrolytes Filled with TiO2 for Lithium Metal Batteries

“…This means that the deterioration of active materials in the cathode leads to poor interfacial contact between the electrode and electrolyte. 48 However, after the 20th cycle of the CP-CPE cell showed the values of both R ct reduced, which could be due to the compatibility of Li/electrolyte/LFP interface increased under temperature conditions. Furthermore, the local maximum value of the imaginary impedance exhibits at the frequency of 2 Hz of after the 10th cycle for the CP-SPE cell, which is lower frequency than the CP-CPE cell, indicating the slowing-down of reaction during charge/discharge processes.…”

Conductive single-walled carbon nanotubes synthesized using a Fe–Mo/MgO catalyst for LiNi0.5Co0.2Mn0.3O2 lithium-ion batteries

“…The diagonal line in the low-frequency region corresponds to the Warburg impedance, which is caused by the diffusion of Li ions in the active substance. 50 Because the three sample cells use the same cathode electrolyte, they mainly differ in their solid–electrolyte interphase (SEI) membrane impedance, charge transfer impedance, and Li ion diffusion coefficient. As shown in Fig.…”

“…Similarly, Wen et al suggested that when using conventional conductive agents (Super-P and KS-15) as well as graphene and carbon nanotubes as conductive agents for spherical LiFePO 4 , the battery with carbon nanotubes as conductive agents had the best overall performance (Table 2). 50,51…”

“…Similarly, Wen et al suggested that when using conventional conductive agents (Super-P and KS-15) as well as graphene and carbon nanotubes as conductive agents for spherical LiFePO 4 , the battery with carbon nanotubes as conductive agents had the best overall performance (Table 2). 50,51 To investigate the effects of SWNTs (slurry), MWNTs (slurry), and SP as conductive agents on the electrical conductivity of the LiNi 0.5 Co 0.2 Mn 0.3 O 2 cathode, the initial discharge curves of the different cells were analyzed at different current rates (0.2 C, 0.5 C, 1 C, 2 C, 3 C, 4 C, and 5 C), as shown in Fig. 6(a)-(c).…”

Enhancing the electrochemical properties of TiNb2O7 anodes with SP-CNT binary conductive agents for both liquid and solid state lithium ion batteries

“…In the SP-CNT binary conductive system, SP particles surround the TNO particles closely, serving as the short range passageways for electron migration. 36,42 Meanwhile, the CNTs laments distribute uniformly in the electrodes and make bridge connections of the neighboring TNO particles, serving as the long range highways for the transportation of electrons. 36,[43][44][45] The combination of the short range and long range conductive agents guarantee a high efficient electronic conductive network and bring better rate performances.…”