NONAQUEOUS ELECTROLYTE RECHARGEABLE BATTERY

摘要

A positive electrode collector includes a main body layer and a surface layer. The surface layer is provided at least at a portion of a surface of the main body layer where the positive electrode mixture layer is provided, and is made of a carbon material. A first positive electrode active material is made of first lithium complex oxide having a layered crystal structure. A second positive electrode active material includes a particle made of second lithium complex oxide having an olivine crystal structure, a carbon film provided at least at a part of a surface of the particle, and alginic acid salt provided at least at a part of a surface of the carbon film. A conducting agent in the positive electrode mixture layer includes a carbon particle and alginic acid salt provided at least at a part of a surface of the carbon particle.

主权项

1. A nonaqueous electrolyte rechargeable battery comprising a positive electrode including a positive electrode collector and a positive electrode mixture layer provided on a surface of said positive electrode collector,
said positive electrode collector having a main body layer and a surface layer, said surface layer being provided at least at a portion of a surface of said main body layer where said positive electrode mixture layer is provided, and being made of a carbon material, said positive electrode mixture layer having a first positive electrode active material, a second positive electrode active material, and a conducting agent, said first positive electrode active material being made of first lithium complex oxide having a layered crystal structure, said second positive electrode active material including a particle made of second lithium complex oxide having an olivine crystal structure, a carbon film provided at least at a part of a surface of said particle made of second lithium complex oxide, and alginic acid salt provided at least at a part of a surface of said carbon film, said conducting agent including a carbon particle and alginic acid salt provided at least at a part of a surface of said carbon particle.