Page 2 - Energy - Shimadzu Solution for Rechargeable Lithium-Ion Battery Evaluation

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What Are Lithium-ion Rechargeable Batteries? How the Lithium-ion Rechargeable Battery Works

The lithium-ion rechargeable battery is a relatively new type of applications, which should lead to enhanced output, efficiency, Appearance
battery that was first used in the early 1990s. With their high and performance.
voltage and high energy density, these batteries are widely used As a leading manufacturer of a broad range of analytical and
for consumer electronics applications, such as mobile phones testing instruments, Shimadzu provides a variety of solutions that
and laptop computers. contribute to research, development, and quality control of
Due to enhanced consumer concerns for the environment and lithium-ion rechargeable batteries as they become more widely
fuel savings, the automobile industry has also been developing used in consumer electronics and eco-cars.
these batteries for hybrid vehicle (HV) and electric vehicle (EV)

Examples of Products Containing Lithium-ion Rechargeable Batteries
Mobile phone battery (single cell) Vehicle battery (module)

Transport devices Communications devices
Basic Structure

A lithium-ion rechargeable battery has a three-layer construction, with a separator sandwiched between the positive and negative
electrode sheets that are wrapped in an elliptical form. This structure is immersed in an electrolyte solution and sealed in a metal casing.

Gasket (or packing) Negative terminal
Sealing plate
IT devices AV devices Positive electrode tab Negative electrode tab
Gas discharge valve

Separator
Negative electrode
External casing
Separator
Positive electrode

Working Principle of Lithium-ion Rechargeable Batteries
Cross-Sectional Diagram
Charging Discharging
Charger load Electrode Schematic Diagram
Direction of current flow Direction of current flow
Positive electrode Negative electrode
Separator Separator
Positive electrode Negative electrode Positive electrode Negative electrode

Lithium ions Electrolyte solution Lithium ions Electrolyte solution

Lithium ions in the lithium compound (positive electrode material) Lithium ions between the layers in the carbon negative electrode
pass through the separator and into the layers in the carbon material pass through the separator and into the lithium compound Positive electrode Positive Electrolyte Conduction Separator Binder Negative active Negative electrode
negative electrode material, resulting in a charging current flow. (positive electrode material), resulting in a discharging current flow. collector foil active material solution enhancer material collector foil

Rechargeable Lithium-Ion Battery Evaluation
2 Analytical and Measuring Instruments for Rechargeable Lithium-ion Batteries 3