Coin-type lithium secondary cell
AssigneeNGK Insulators, Ltd.
InventorsYukinobu Yura, Kazuki Maeda, Masanori Tajima
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Abstract
A coin-type lithium secondary cell for soldering by reflow method includes a positive electrode including a lithium composite oxide, a negative electrode, an electrolyte layer provided between the positive electrode and the negative electrode and including an electrolytic solution, a cell case having an enclosed space in which the positive electrode, the negative electrode, and the electrolyte layer are housed. The positive electrode and the negative electrode as a whole contains 3.0% by mass or less of lithium carbonate.
Claims6
A coin-type lithium secondary cell for soldering by reflow method, comprising:
- a positive electrode containing a lithium composite oxide;
- a negative electrode;
- an electrolyte layer provided between said positive electrode and said negative electrode and containing an electrolytic solution;
- and
- a cell case having an enclosed space in which said positive electrode, said negative electrode, and said electrolyte layer are housed,
- wherein said positive electrode and said negative electrode as a whole contain 0.002% or more by mass and 3.0% or less by mass of lithium carbonate, and
- wherein said positive electrode and said negative electrode are sintered bodies, which contain neither binders nor conductive assistants.
Dependencies are inferred from the claim text.