News

Today, a delegation from 대한진(캠트리) a renowned South Korean enterprise, visited TOB NEW ENERGY in China for a strategic meeting. The two parties engaged in in-depth discussions on deepening their cooperative partnership and reached multiple agreements. This meeting further strengthened their bilateral ties and laid a solid foundation for future collaborative development. During the visit, the대한진(캠트리)  team, accompanied by TOB Company executives, toured the company’s modern production facilities, newly built drying room, and high-standard laboratory. Through the on-site inspection, the Korean delegation highly commended TOB’s advanced manufacturing processes, rigorous quality control systems, and continuous innovation in technology. In the talks, both sides conducted thorough exchanges on existing cooperation achievements and future plans. TOB NEW ENERGY expressed its commitment to leveraging its strengths in R&D and production to engage in deeper collaboration with대한진(캠트리) in areas such as resource sharing and technological complementarity. The대한진(캠트리) team, in turn, recognized TOB’s professional expertise and growth potential, expressing strong expectations for jointly exploring broader market opportunities. Both parties agreed that this exchange has injected new momentum into their partnership and expressed confidence in the promising future of their collaboration. Daejeon, Korea Company name: 대한진(캠트리) Address: A-518 DAEDEOK-BIZ CENTER 17,TECHNO4-RO,YUSEONG-GU,DAEJEON,REPUBLIC OF KOREA.34013 34013대전 광역시 유성구 테크노 4로 17 대덕비즈센터 A-518 Contact Person: (주)대한진-김완섭(WanSeop Kim) Phone No. : 010-6402-7927, 010-9349-8721 E-mail: sales@tobkorea.kr

For this project, TOB NEW  ENERGY assigned technical personnel and equipment engineers to the customer's laboratory to provide on-site guidance for equipment installation and commissioning. The production of prismatic batteries has been successfully completed.

The customer personally inspected the equipment at the factory, and all equipment passed the acceptance inspection. The customer expressed great satisfaction and conveyed their willingness to establish long-term cooperation. The equipment has been packed according to standard requirements and is currently being loaded into containers for shipment.

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.