▎ 摘　　要

NOVELTY - A bipolar electrode comprises a composite material negative electrode made of group (VA) simple substance, or group (VA) simple substance and doping material, an aluminum foil current collector and a lithium-ion battery positive electrode. When the minimum cut-off voltage of the group VA simple substance or the composite material negative electrode is 0.3-1 V, the specific capacity is more than 200 mAhours/g. USE - Bipolar electrode is used for lithium-ion battery (claimed) for electric vehicle and mobile terminal. ADVANTAGE - The bipolar lithium-ion battery is non-combustible, has high negative electrode voltage, does not generate lithium dendritic crystal, with intrinsic high safety, far better than the traditional lithium-ion batteries, and uses aluminum foil as current collector, without copper foil, compared with the traditional lithium-ion battery cost is lower. It greatly reduces the non-active lead and battery shell and other battery structure components, the electrode material accounts for higher total mass ratio of the battery, the energy density is higher, the thermal runaway risk is small, the current distribution is more uniform, the internal resistance is smaller, the power density is high, and the thermal effect is low. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a bipolar lithium-ion battery, which is obtained by laminating and encapsulating the bipolar electrode and electrolyte. The usage amount of electrode material is 50-80 wt.% with respect to the total bipolar lithium-ion battery. The bipolar lithium-ion battery has voltage of more than 7 V, energy density of 300-700 Whours/kg, and power density of 0.5-20 kW/kg, and can maintain 65-99% capacity at 0.15-20 C magnification for 100-2000 cycles. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the bipolar electrode and the bipolar lithium-ion battery. (Drawing includes non-English language text)