Effects of carbon nanotubes on the high-rate discharge properties of nickel/metal hydride batteries

Structure and electrochemical properties of ball-milled Co-carbon nanotube composites as negative electrode material of alkaline rechargeable batteries

“…This can also be attributed to the larger reaction surface of the electrode with the addition of CNTs, which increases the electrochemical reaction surface of the active particles. Thus, the good conductive property of CNTs with stable electrochemical properties is of importance for providing enough current collectors in the electrodes, thus decreasing the charge transfer resistance [15]. This can be confirmed by the result of exchange current density obtained from Fig.…”

“…It is hopeful to improve the electrochemical properties of alkaline rechargeable batteries with the addition of CNTs. Many efforts have been done on this purpose [14][15][16][17][18]. However, to the best of the author's knowledge, there is no report on the electrochemical performance of Co-CNT composites.…”

Electrochemical investigation on addition of CNTs to the positive electrodes for Ni/MH rechargeable batteries

“…They are regarded as one of the most potential materials in the coming molecular electronic industry for their wonderful mechanical and physical properties. Lv et al [7] first added multi-walls CNTs as conductive agent replacing of acetylene black to the positive electrodes of Ni/MH batteries considering their good tenacity, good elastic modulus [8] and high specific conductivity [9][10][11]. The results showed that the batteries with CNTs in the positive electrodes presented higher total capacity, higher discharge voltage, lower inner resistance and better high-rate discharge performance than those with acetylene black.…”

Electrochemical investigation on nanoscale CoO as additive to the positive electrodes for Ni/MH rechargeable batteries

“…The active material ␤-Ni(OH) 2 is a kind of semi-conductor and its poor conductivity leads to a limited exchange current density, which handicap the utilization rate of ␤-Ni(OH) 2 and high-rate discharge ability of the nickel-metal batteries [1][2][3]. CoO adding to the positive electrodes dissolved in alkaline electrolyte to form blue Co(II) complex ion and then precipitated on ␤-Ni(OH) 2 particles as ␤-Co(OH) 2 while standing.…”