18483856. ALL-SOLID-STATE SECONDARY BATTERY AND METHOD OF CHARGING THE SAME simplified abstract (SAMSUNG ELECTRONICS CO., LTD.)

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ALL-SOLID-STATE SECONDARY BATTERY AND METHOD OF CHARGING THE SAME

Organization Name

SAMSUNG ELECTRONICS CO., LTD.

Inventor(s)

Naoki Suzuki of Yokohama-city (JP)

Nobuyoshi Yashiro of Yokohama-city (JP)

Takanobu Yamada of Yokohama-city (JP)

Yuichi Aihara of Yokohama-city (JP)

ALL-SOLID-STATE SECONDARY BATTERY AND METHOD OF CHARGING THE SAME - A simplified explanation of the abstract

This abstract first appeared for US patent application 18483856 titled 'ALL-SOLID-STATE SECONDARY BATTERY AND METHOD OF CHARGING THE SAME

Simplified Explanation

The abstract describes an all-solid-state secondary battery with a cathode, an anode, and a solid electrolyte layer. The anode active material layer contains a material that can alloy with or form a compound with lithium. The ratio of the initial charge capacity of the anode active material layer to the initial charge capacity of the cathode active material layer must satisfy a specific condition.

  • The all-solid-state secondary battery includes a cathode, an anode, and a solid electrolyte layer.
  • The anode active material layer contains a material that can alloy with or form a compound with lithium.
  • The ratio of the initial charge capacity of the anode active material layer to the initial charge capacity of the cathode active material layer must satisfy the condition 0.01 < (b/a) < 0.5, where a is the initial charge capacity of the cathode active material layer and b is the initial charge capacity of the anode active material layer.
  • The condition is determined based on the open circuit voltage and maximum charging voltage for the cathode active material layer and the open circuit voltage and 0.01 volts vs. Li/Li for the anode active material layer.

Potential applications of this technology:

  • Electric vehicles: All-solid-state batteries can provide higher energy density and improved safety compared to traditional lithium-ion batteries, making them suitable for electric vehicles.
  • Portable electronics: The compact size and improved performance of all-solid-state batteries make them ideal for use in smartphones, tablets, and other portable electronic devices.
  • Renewable energy storage: All-solid-state batteries can store energy from renewable sources such as solar and wind power, helping to stabilize the grid and increase the adoption of clean energy.

Problems solved by this technology:

  • Safety concerns: All-solid-state batteries eliminate the risk of electrolyte leakage and thermal runaway, addressing safety issues associated with traditional lithium-ion batteries.
  • Energy density: The use of anode active materials that can alloy with or form compounds with lithium allows for higher energy density, increasing the battery's capacity and runtime.
  • Cycle life: All-solid-state batteries have the potential for longer cycle life compared to conventional batteries, reducing the need for frequent replacements.

Benefits of this technology:

  • Improved safety: All-solid-state batteries are inherently safer due to the absence of flammable liquid electrolytes, reducing the risk of fire or explosion.
  • Higher energy density: The use of alloyable anode active materials enables higher energy density, providing longer-lasting power for various applications.
  • Longer cycle life: All-solid-state batteries have the potential for longer cycle life, reducing the environmental impact and cost associated with battery replacements.


Original Abstract Submitted

An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01<(b/a)<0.5, wherein a is the initial charge capacity of the cathode active material layer determined from a first open circuit voltage to a maximum charging voltage, and b is the initial charge capacity of the anode active material layer determined from a second open circuit voltage to 0.01 volts vs. Li/Li.

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