New Graphite Anode Single-Sided Electrode Sheet Unveiled to Empower Industrialization of High-Performance Lithium and Solid-State Batteries

Against the backdrop of accelerated upgrading of the global new energy industry and surging demand for solid-state batteries and high-power lithium-ion batteries, high-performance electrode materials have become the core to breaking through battery energy density, cycle life and safety performance. Recently, a new Copper foil coated with graphite single-sided electrode sheet designed for high-end lithium and solid-state battery systems has been officially launched. With precise coating control, excellent electrochemical performance and stable structural characteristics, it provides a high-performance solution for the R&D and mass production of next-generation power and energy storage batteries, and is expected to drive lithium battery anode materials toward higher precision and reliability.

The newly launched graphite anode single-sided electrode sheet is fabricated through precision coating and rolling processes, achieving synergistic optimization of dimensional accuracy, coating uniformity and electrochemical performance. The overall dimension of the electrode sheet is 241mm (L) × 200mm (W), with the effective coating area precisely controlled at 241mm × 175mm and a standard 12.5mm margin reserved on each side. It is fully compatible with subsequent die-cutting, tabbing, packaging and welding processes, and adaptable to cylindrical, pouch and solid-state battery production lines, greatly reducing subsequent processing waste and improving battery manufacturing yield.

As a core component of batteries, the thickness and structural design of electrode sheets directly determine the internal space utilization and ion transport efficiency of batteries. The total thickness of this product is controlled within 50–70μm, and the current collector adopts 9μm ultra-thin copper foil, which significantly reduces the proportion of inactive materials while ensuring structural strength, reserves more space for active materials and effectively improves battery energy density. The coating surface density is stably controlled at 6.3±0.2mg/cm², the current collector surface density is 8.7mg/cm², and the mass proportion of active material reaches 93.2%, balancing high loading and high stability to meet capacity requirements in high-rate charging and discharging scenarios.

In terms of key performance indicators, this graphite anode single-sided electrode sheet delivers outstanding performance. Tested results show that the compaction density reaches 1.2±0.1g/cm³, maintaining intact structure and moderate porosity after rolling, which not only ensures rapid intercalation and deintercalation of lithium ions, but also improves electrode conductivity and mechanical stability, effectively inhibiting electrode sheet deformation and delamination during cycling. With a gravimetric capacity ≥300mAh/g, it exhibits excellent capacity utilization and rate characteristics within the conventional test voltage range of 0.005–2.5V. It is compatible with high-range power batteries, long-cycle energy storage batteries and NASICON solid-state electrolyte system batteries, and can match efficiently with cathode materials to enhance the energy density and cycle life of full cells.

Notably, the electrode sheet adopts single-sided coating + precision rolling technology, featuring a smooth and uniform surface without material shedding or pinholes, and strong welding adaptability. It is compatible with ultrasonic spot welding, resistance spot welding and laser welding, especially suitable for high-precision welding of copper alloy tabs and current collectors, solving the pain points of short circuits and high welding difficulty of traditional double-sided electrodes. It is particularly ideal for solid-state and pouch batteries with strict requirements on safety and consistency.

For storage and usage, the product offers good environmental adaptability. It should be stored in a sealed manner after opening, and can be stably kept in a 60–80°C oven or glove box to effectively avoid performance degradation caused by moisture and air adsorption, ensuring material consistency in laboratory R&D and industrial mass production and reducing batch-to-batch variations.

Industry experts note that with higher requirements placed on energy density, safety performance and cycle life by the new energy vehicle and energy storage markets, the refinement, standardization and high performance of anode electrode sheets — as a core battery component — represent an inevitable trend of industrial development. The newly launched graphite anode single-sided electrode sheet, by optimizing coating design, thickness control and electrochemical performance, precisely matches the R&D needs of high-end lithium and solid-state batteries, filling the market gap of high-precision single-sided graphite anode sheets and providing high-quality material support for battery companies to shorten R&D cycles and improve product performance.

As the industrialization of solid-state batteries accelerates, demand for ultra-thin, high-stability and high-compatibility anode sheets continues to grow. Equipped with a 9μm ultra-thin copper foil current collector, high active material ratio, excellent compaction density and electrochemical performance, this graphite anode single-sided electrode sheet can match efficiently with sulfide, oxide and NASICON-type solid electrolytes, reducing interface impedance, enhancing interface stability and cycle performance of solid-state batteries, and facilitating the transition of solid-state batteries from laboratories to large-scale applications.

Going forward, with the continuous iteration of new energy technologies, high-performance electrode materials will become the core driving force for battery industry upgrading. The launch of this new graphite anode single-sided electrode sheet not only enriches the high-end lithium battery anode material system, but also promotes accelerated breakthroughs in power battery, energy storage battery and solid-state battery technologies, injecting new momentum into global energy transition and green and low-carbon development.