Systematic comparison of solid-state batteries and lithium-ion batteries

This paper primarily compares the characteristics of lithium-ion batteries (LIBs) and solid-state batteries in terms of temperature adaptability, energy density, and cycle life, and discusses the challenges and future prospects faced by solid-state batteries. Solid-state batteries exhibit better temperature adaptability due to their non-liquid electrolyte and good thermal stability, allowing them to operate safely over a wider temperature range and effectively reducing the risk of thermal runaway. In terms of energy density, solid-state batteries possess higher energy densities expected to reach 400-500Wh/kg, far surpassing the 90-235Wh/kg of commercial lithium-ion batteries. This means that a greater amount of electrical energy can be stored within the same volume or weight, which is significant for enhancing the range of electric vehicles and reducing the size of portable electronic devices. Moreover, solid-state batteries also have a longer service life, with cycle counts reaching thousands of times, reducing long-term usage costs and benefiting sustainable environmental development. Despite the still existing high production costs and technical challenges in materials research and development, solid-state batteries are expected to overcome these issues with continuous technological advancements, bringing innovation to energy storage technology and pushing us towards a more efficient and safe energy future.