Gel electrode secondary cell

A gel electrolyte secondary cell comprising:

• a positive electrode;
• a negative electrode comprising a current collector and a mixture of powders of a graphite type carbonaceous material and a binder;
• and
• a gel electrolyte comprising an electrolyte salt, a non-aqueous solvent and a high-molecular weight material,
• wherein the non-aqueous solvent comprises propylene carbonate and ethylene carbonate,
• wherein a content of propylene carbonate ranges from 10 mol % to 75 mol %,
• wherein the powders of the graphite type carbonaceous material are obtained by sintering meso-carbon micro-beads and has a mean particle size of 5 to 100 μm, and
• wherein the binder is in an amount 1 to 20 wt % based on total weight of the negative electrode material.