Narada’s Breakthrough in Solid-State Lithium Battery Technology

Narada’s Zhejiang Provincial Key R&D Program project, titled "Development and Industrialization of Key Materials for New Energy Vehicles – Development of Key Materials and Manufacturing Technologies for High Energy Density Solid-State Lithium-ion Batteries" (Project Number: 2021C01175), has recently passed its acceptance review.

The Zhejiang Provincial Department of Science and Technology convened a panel of experts for an on-site inspection of the project’s pilot demonstration line. The review also included an evaluation of the project’s work summary, technical reports, special audit documents, testing results, and user feedback.

The expert panel praised the project’s accomplishments, highlighting the innovative and high-quality research conducted by the team. They confirmed that the project met all its primary goals and tasks as outlined in the contract, leading to the approval of the project’s acceptance.

To address significant technical challenges in solid-state lithium batteries, such as low ionic conductivity in solid electrolytes and poor interfacial compatibility, Narada launched this critical R&D initiative in 2020. The company collaborated extensively with Zhejiang University to develop and apply key technologies for solid-state batteries and specialized equipment.

The project achieved notable technological advancements, including surface coating modifications of ternary oxide cathode materials with fast-ion conductor solid electrolytes, dry-process dense electrode forming technology, and the creation of high ionic conductivity inorganic/organic composite solid electrolyte membranes. Two high-energy-density solid-state lithium batteries (10Ah and 20Ah) were developed, alongside the establishment of a pilot demonstration line for manufacturing these batteries.

The products developed under this project have been tested by independent third-party agencies, confirming that their technical specifications meet the required standards. User feedback has been overwhelmingly positive. The project has led to the filing of 11 national invention patents, with 7 already granted, and the publication of 16 SCI papers, showcasing significant research contributions.

The acceptance panel encouraged Narada to further consolidate the project outcomes and actively pursue the industrialization of these results to accelerate the growth of the solid-state battery industry.

Narada’s 20Ah solid-state battery features an ultra-high nickel ternary cathode and a confined-growth silicon-carbon anode system. Utilizing innovative "sandwich structure" electrolyte design and in-situ surface film formation technology for electrodes, the battery effectively addresses the "solid-solid interface" issue.

This battery boasts an energy density of 350Wh/kg and a cycle life of 2,000 cycles. It has successfully passed rigorous safety tests, including compression and short-circuit assessments, meeting national safety standards with no risk of fire or explosion. The battery retains 93.4% of its capacity after 500 full charge-discharge cycles and over 80% capacity after 2,000 cycles.

In the realm of solid-state batteries, Narada not only holds core technological advantages but also actively promotes the industrialization of its innovations. Leveraging the current performance of its solid-state batteries, the company is collaborating with key customers to explore applications in drones, robotics, low-altitude aircraft, and consumer electronics.

Edit by paco