| abstract |
The invention discloses a high-energy-density cobalt-free lithium-ion battery and an electric vehicle, comprising a positive electrode system, a negative electrode system and an electrolyte; the positive electrode system includes a high nickel-cobalt-free positive electrode material active material, a positive electrode conductive agent, and a positive electrode binder , a positive electrode adsorbent and a positive electrode current collector, the positive electrode adsorbent is a carbon adsorbent; the negative electrode system includes a silicon carbon negative electrode material mixture, a negative electrode conductive agent, a negative electrode binder and a negative electrode current collector, the silicon carbon negative electrode material The mixed substance includes silicon-oxygen material and graphite material; the electrolyte includes lithium salt, solvent, high-pressure-resistant additive, positive electrode film-forming stabilizer and negative electrode film-forming stabilizer. By adding carbon adsorbent to the positive electrode system, the gas generated by the reaction between the positive electrode and the electrolyte can be adsorbed, so as to avoid the flatulence of the battery cell, improve the stability of the contact interface of the internal pole piece, and effectively reduce the internal resistance. |