History of Solid-State Batteries

Last Updated on March 17, 2022 by Admin

Solid-state batteries make use of solid electrodes and electrolytes. They could be a viable alternative to traditional lithium-ion batteries, which use liquid or polymer electrolytes. Solid-state batteries provide high quality and reliability at a cheap rate. 

Furthermore, they have higher potential cathodes, relatively low flammability, higher electrochemical stability, and power density when contrasted to liquid electrolyte batteries. Solid-state batteries are used in a wide range of industries, including automotive, power storage, electronic goods, industrial and aeronautical.

The Evolution of Solid Batteries

For the first time, solid-state batteries were initially created using silver ion electrical conductions. The battery packs had a high resistance and were restricted in initial concentration. Since most of those batteries were built on silver ion conducting electrolytes, silver had to be used as an anode, resulting in low voltage levels and power density. 

Later on, the Oak Ridge National Laboratory invented a new feature of a solid-state battery in 1990, which was later adapted into thin-film battery cells. However, in 2013, the Colorado University Boulder established a great state lithium battery with a solid compound cathode with greater energy capacity.


Dyson limited also created a reliable state lithium battery with increased energy capacity at a lower price in September 2014. However, in 2017, they launched a more robust battery with a glass electrolyte and a metal anode made of lithium, potassium, and sodium.

About Lithium Batteries

A solid state lithium battery comprises four parts: a cathode, an anode, a separator, and an electrolyte. A lithium-ion battery is used in mobile phones, power tools, and electric vehicles that use a liquid electrolyte solution. The battery is made up of electrolytes, which makes it possible to move ions, and two electrodes, which are the components of a lithium-ion battery cell. During outflow, ions flow from the negative electrode to the positive electrode and back again.

Electrodes in Li-ion batteries can be made of various components. The most common configuration is lithium cobalt oxide and graphite, encountered in electronic devices such as mobile phones and personal computers. Lithium manganese oxide and lithium iron phosphate are two other cathode components that can be used. As an electrochemical reaction, Lithium-ion batteries generally use any.

Solid-state Battery Benefits

  1. Solid-state batteries ensure two to ten percent of the energy density of lithium-ion batteries with the same volume due to the smaller surface area of the solid electrolyte, resulting in more potent cells with less space.
  1. Because solid-state batteries have higher quality and energy concentration, they don’t need the cooling and regulation elements that lithium-ion batteries have, resulting in a reduced general density, more structure freedom, and less weight.
  1. The solid-state batteries have an effective safety mechanism.
  1. Solid-state batteries can be regenerated up to seven times more than lithium-ion batteries, granting them a prospective life expectancy of ten years instead of a couple of years that lithium-ion batteries are assumed to last.

What exactly are solid states?

Due to the apparent mixture of metallic lithium anode and high voltage cathode electrochemical reactions, solid-state technologies are currently just one innovation capable of meeting the automotive sector’s most complicated and demanding performance standards. The successful incorporation of this specific composite will be a big thing. As a result, solid-electrolytes have become the golden standard, with several groups of solid-state electrolytes emerging. These include;

  1. Polymer electrolytes are effortlessly producible, cheap, and made from plentiful resources that underperform at low temperatures and in power applications.
  1. Inorganic electrolytes are primarily composed of oxides or sulfides and are undeniably severe challengers. Their lucrative accomplishments are very appealing, but significant processing challenges remain and lower the considerable dangerous extent of these substances.
  1. Composite electrolytes are a mixture of polymer and inorganic electrolytes that benefit from each other’s perks.


Solid-state batteries, like other emerging technologies, are highly-priced. It is partly due to infrastructure costs, although it is highly rooted in the fact that they are hard to manufacture on a massive scale. Therefore, the automotive sector and battery industries must work a lot harder before solid-state batteries are fully prepared to be used. But besides their perks over liquids, solid electrolytes pose a challenge in obtaining optimum material balance to produce enough liquid to power an electric motor.