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I. Characteristics of the Black Spot Phenomenon Visual Appearance: Black or dark gray spots appearing on the surface of the electrode, mostly concentrated at the edges of the coating area or at the winding interface; The black spot regions are accompanied by graphite interlayer delamination and active material expansion, leading to abnormal local thickness (increase exceeding 85%). Performance Impact: Capacity fade (typical loss of 5–10%), with a cycle life reduction of over 30%; Lithium plating in black spot areas increases the risk of thermal runaway, with localized temperatures reaching above 80°C. II. Core Cause Analysis Material Defects: Excessive impurities in raw materials (e.g., residual rolling oil on copper foil) or conductive agent agglomeration (particle size >5 μm), leading to localized failure of the conductive network; Contamination on the substrate surface (dust, metal particles) hindering slurry wetting, causing abnormal solvent evaporation during drying. Process Deviations: Poor dispersion of coating slurry, introducing bubbles that form pinhole defects; Sudden changes in drying temperature gradients leading to rapid surface skinning, trapping internal solvents and causing stress cracks; Improper negative pressure control during formation (pressure fluctuation >10%), accelerating the deposition of electrolyte decomposition products. Interfacial Reaction Failure: HF generated from LiPF₆ decomposition in the electrolyte corrodes the graphite layer, causing localized SEI film rupture; Insufficient lithium salt concentration or moisture ingress (>50 ppm), triggering side reactions that produce high-resistance byproducts such as LiF and Li₂O. III. Common Solutions Process Optimization Measures: Adopt a closed-loop coating control system to maintain tension fluctuations ≤0.5% and match drying temperature gradients (heating rate ≤3°C/min); Optimize formation negative pressure parameters (e.g., vacuum level controlled at -90 to -95 kPa) and verify process stability using blockage simulation tools. Material Modification Solutions: Increase binder proportion to 3–5% (e.g., PVDF) to suppress slurry sedimentation and particle agglomeration; Use nano-composite current collectors (e.g., carbon-coated aluminum foil) to reduce interfacial contact resistance by over 30%. Environmental Control Upgrades: Maintain workshop humidity ≤30%, with copper foil plasma cleaning achieving a wetting angle ≤20°; Pre-lithiation treatment before storage to reduce negative electrode active lithium loss (capacity recovery rate improved by 7–9%). IV. Detection and Validation Methods Microscopic Analysis: SEM/EDS to examine the composition of black spot areas (abnormal O/F/P content indicates electrolyte decomposition); XRD to analyze graphite interlayer spacing (d002 > 0.344 nm suggests structural damage). Process Validation Tools: Use formation blockage simulation tools to test cells, collecting pressure and temperature curves to match threshold condi...

Dear Valued Clients, Warm greetings from TOB NEW ENERGY! As we approach the joyous occasion combining the National Day of China and the Mid-Autumn Festival, we would like to express our sincere gratitude for your continued trust and support. Please be informed of the following schedule of our National Day & Mid-Autumn Festival Holiday: Holiday Period: Wednesday, October 1st, 2025, to Wednesday, October 8th, 2025. Resumption of Business: Our office will resume normal operations on Thursday, October 9th, 2025. During the holiday, our office will be closed, and regular order processing and shipping will be temporarily suspended. To ensure minimal disruption to your business, please plan your orders and inquiries accordingly. For any urgent matters that require immediate attention during the holiday, please do not hesitate to contact our dedicated team. We will have limited availability to address critical issues. Emergency Contact: Amy Tel: +86-18120715609 Email: tob.amy@tobmachine.com We appreciate your understanding and cooperation. Wishing you and your family a joyful and prosperous Mid-Autumn Festival and a wonderful National Day holiday! Best Regards, The Team at TOB NEW ENERGY

From September 21 to 22, TOB NEW ENERGY successfully completed anotherpolymer battery laboratory line. After the equipment was delivered, we assigned two technical engineers to assist the customer with the installation. The installation work took two days, during which we provided detailed explanations on the operation and use of each process-related piece of equipment to ensure the customer could operate it independently. With the guidance of our technical team, the customer is now able to operate the machinery independently and has successfully produced satisfactory batteries. The customer expressed high satisfaction with our service.

From September 16 to 17, 2025, TOB New Energy technicians led the customer to successfully complete the factory acceptance test of the pilot line coating machine. The testing scope included comprehensive inspections of: Appearance quality: Material properties and welding craftsmanship; Static parameters: Coating head gap accuracy and roll parallelism; Dynamic performance: Coating speed, basis weight uniformity, and edge neatness. All items passed the inspection and met the specified requirements. The customer expressed high satisfaction with the acceptance process and hopes to deepen cooperation with TOB New Energy in the future.

Beijing, China – September 3, 2025– On the historic milestone marking the 80th anniversary of the victory of the Chinese People’s War of Resistance Against Japanese Aggression and the World Anti-Fascist War, TOB New Energy held a meaningful group viewing event, resonating in sync with the nation. At 9:00 AM, the company’s conference hall, adorned with fluttering red flags and steeped in solemnity, brought together all employees to witness the grand military parade at Tiananmen Square—a momentous display of historical glory and contemporary strength. This event not only paid profound tribute to the spirit of our predecessors but also injected unifying momentum into the team through a shared experience of “watching together, empathizing together, and striving together,” further anchoring the enterprise’s mission to “align with the nation’s development.” A Symphony of History and Reality: A Transcendent “Spiritual Resonance” Within the conference hall, a large screen live-streamed the magnificent scenes of the parade. As President Xi Jinping delivered his keynote speech, recounting the Chinese nation’s journey from suffering to rejuvenation over the past 80 years, the entire audience sat in rapt attention. Many jotted down key phrases like “remembering history” and “forging the future” in their notebooks. With the first thunderous cannon salute piercing the sky, foot formations, equipment formations, and air echelons paraded past in succession—the steel tide of the air defense missile formation, the silver hair and medals of the veteran honor guard, and the technological edge of the unmanned combat systems. Each frame drew spontaneous applause from the on-site viewers. The Sublimation from “Spectators” to “Strivers” As the military parade concluded on the screen, this 80-year “dialogue across time” deepened TOB New Energy employees’ understanding: so-called “aligning with the nation” is no abstract concept, but rather the integration of individual job value and corporate direction into the historical journey of national rejuvenation. Drawing strength from history and stepping forward with resolve—this, perhaps, is the most precious significance of this collective viewing. We are not only witnesses to history but also builders of the times. Today, we take pride in our motherland together; tomorrow, we will make our motherland proud through our endeavors.

Xiamen, China, August 21, 2025, Xiamen TOB New Energy Technology Co., Ltd, a globally leading provider of one-stop battery production line solutions and advanced materials, today announced the official signing of a strategic cooperation agreement on battery technology R&D with Central South University (Professor He’s team). The collaboration, established on August 21, 2025, marks a significant step forward in advancing next-generation battery, battery material and battery recycle technology. Under the agreement, the two parties will engage in in-depth comprehensive collaboration on the applied research and development of lithium-ion batteries, sodium-ion batteries, solid-state batteries and materials. From 2025 to 2028, Professor He’s top-tier team at Central South University will work closely with TOB New Energy’s technical experts to jointly develop advanced materials and cutting-edge core technologies for these battery systems, while also providing technological upgrade services for TOB New Energy. This powerful alliance aims to integrate Central South University’s strong theoretical foundation and cutting-edge academic research capabilities with TOB New Energy’s extensive industrial practical experience and market-oriented approach. Together, they will bridge the critical gap between laboratory research and commercial application, striving to enhance core battery performance in areas such as: high energy density (≥400wh/kg), high-rate capability (≥1000C), long cycle life (≥10000times), and high safety (No explosion). Mr. Dany Huang, CEO of Xiamen TOB New Energy Technology Co., LTD, stated: “We are truly honored to establish this strategic partnership with Professor He’s team at Central South University. Central South University enjoys a stellar reputation in the field of materials science and engineering, and this collaboration is a core initiative for us to continue leading the forefront of battery technology development. The innovations generated through this cooperation will directly empower our solutions, enabling us to provide customers with more efficient, reliable, and advanced equipment, materials, and technical support across the entire chain—from laboratory R&D and pilot-scale amplification to large-scale mass production—significantly enhancing our ability to deliver world-class one-stop battery solutions.” About Xiamen TOB New Energy Technology Co., Ltd. TOB New Energy is a comprehensive solutions provider focused on the new energy battery sector. The company’s core businesses include: · One-stop battery lab line and battery pilot line solutions: Customized solutions for battery R&D and pilot stages, covering laboratory design, equipment customization, and researcher training. · One-stop battery production line solutions: Full turnkey project services ranging from production line design, factory construction, equipment selection, supply, installation, and commissioning to personnel training, materials supply,  etc....

For this acceptance test, the customer was not present and has fully entrusted our company's engineers to conduct the inspection. Our engineers examined each link of every piece of equipment, including overall appearance, electrical connection safety, equipment operation, and other key aspects, while recording the entire acceptance test process via video.

Principle of Cold Isostatic Pressing (CIP) Cold isostatic pressing (CIP) is a process that densifies powders or formed materials under ambient or low temperatures by transmitting isotropic pressure through a fluid (e.g., water or oil). Its core principle is based on Pascal’s Law: the pressure of the fluid in a sealed container is uniformly transmitted in all directions. The specific process involves the following steps: Pressure Transmission Mechanism: The material is encapsulated in a flexible mold (e.g., rubber or plastic) and immersed in a high-pressure vessel filled with fluid (oil or water). An external pressurization system (hydraulic pump) applies pressure to the fluid, which is uniformly transmitted to the material’s surface, achieving three-dimensional isotropic compression. Densification Mechanism: Powder particles undergo plastic deformation or rearrangement under high pressure, closing pores and significantly increasing material density. Due to uniform pressure distribution, internal stresses within the material are consistent, avoiding density gradients caused by traditional uniaxial pressing. Applicable Materials: Suitable for ceramics, metal powders, polymers, and composites, particularly materials sensitive to temperature (e.g., certain solid electrolytes). Comparison with Hot Isostatic Pressing (HIP): CIP operates at ambient temperatures, avoiding phase transitions, grain growth, or chemical reactions induced by high temperatures. However, it cannot achieve sintering densification (requiring subsequent heat treatment). Why is Cold Isostatic Pressing Needed for Solid-State Batteries? CIP is a critical process in solid-state battery manufacturing for the following reasons: Optimization of Solid-Solid Interfaces: A core challenge in solid-state batteries is poor physical contact between solid electrolytes and electrodes (cathode/anode), leading to high interfacial resistance. CIP forces tight adhesion between the electrolyte and electrodes via high pressure, reducing interfacial voids and enhancing ionic transport efficiency. Avoidance of High-Temperature Side Effects: Many solid electrolytes (e.g., sulfides, oxides) are temperature-sensitive. Using hot pressing (e.g., HIP) may induce side reactions (e.g., decomposition of sulfides), grain boundary diffusion, or melting of electrode materials (e.g., lithium metal). CIP operates at ambient temperatures, mitigating these issues. Material Compatibility: Multilayer structures in solid-state batteries (e.g., cathode-electrolyte-anode) require uniform compression during fabrication. CIP’s isotropic pressure ensures uniform compression of multilayer structures, preventing interlayer misalignment or cracking. Typical Application Scenarios Sulfide Solid Electrolytes: High pressure enhances physical contact between the electrolyte and electrodes. Composite of Oxide Electrolytes and Electrodes: For example, densification of LLZO (lithium lanthanum zirconate oxide) with cathode materials (NCM, ...