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29/05/2026

15/05/2026

🔬 The same DLC coating can behave completely differently at different temperatures.

Recent studies show that:

❄️ At −100°C:
Water molecules help protect the surface

🔥 At elevated temperatures:
Graphitized transfer films form dynamically

👉 Same coating. Different tribochemical mechanism.

This is why friction and wear are not just material properties — they depend on evolving surface chemistry and operating conditions.

26/04/2026

🔬 A hidden reason behind coating failure in lubricated systems

In many industrial applications, coatings like DLC are expected to reduce wear and improve performance.
Yet, unexpected failures still occur — even when everything seems correctly designed.

The issue is often not the coating itself.

👉 The real problem lies in the interaction between the surface and the lubricant.

Incompatible additives, unstable tribofilms, or subtle chemical reactions at the interface can lead to:
• Increased wear
• Unstable friction behavior
• Premature coating failure

These effects are often overlooked because they happen at the microscopic level.

Understanding the surface–lubricant interaction is key to identifying the root cause and preventing repeated failures.

If you are working with coated or lubricated systems and facing unexplained performance issues, this might be worth a closer look.

23/02/2026

2/2 The study, published in Advanced Science, titled “High-Performance Quasi-Solid-State Calcium-Ion Batteries from Redox-Active Covalent Organic Framework Electrolytes”, introduces a novel CIB design based on redox covalent organic frameworks, that function as quasi-solid-state electrolytes (QSSEs). The integration of laboratory experiments with computational simulations demonstrated that not only these ordered nano-channels enhance ion transport capability (>0.53), but they also contribute to improving ionic conductivity (0.46 mS.cm–1) under ambient conditions, and structural stability of the battery during long-term operation.
Using this approach, the team successfully constructed a complete CIB cell. The prototype delivered a reversible specific capacity of 155.9 mAh.g⁻¹ at a current density of 0.15 A.g⁻¹. Even under a higher current density of 1 A g⁻¹, the battery maintained more than 74.6% of its original capacity after 1,000 charge-discharge cycles, indicating excellent durability and cycling performance.
According to the researchers, these results demonstrate that redox-active covalent organic framework electrolytes can significantly enhance the practicality of CIBs. The study highlights the strong potential of CIBs as an environmentally friendly alternative to lithium-based systems and represents an important step toward next-generation energy storage technologies suitable for clean energy infrastructures and future electric mobility.
Reference: “High-Performance Quasi-Solid-State Calcium-Ion Batteries from Redox-Active Covalent Organic Framework Electrolytes” by Zhuoyu Yin, Jixin Wu, Ye Tian, Yufei Yuan, Muhua Gu, Lei Cheng, Yanming Wang and Yoonseob Kim, 16 November 2025, Advanced Science.
DOI: 10.1002/advs.202512328
The project was conducted in collaboration with researchers at Shanghai Jiao Tong University.
Date: February 16-2026
Source: https://scitechdaily.com/breakthrough-calcium-ion-battery-could-challenge-lithium-for-clean-energy/
Website: www.nanoscietec.com
www.jnanoscitec.com

23/02/2026

🔋Innovative Calcium-Ion Batteries May Outperform Lithium in Clean Energy

As global demand for renewable energy systems, electric vehicles, and high-capacity energy storage continues to rise, various battery chemistries have been under investigation. In recent years, lithium-ion (Li-ion) batteries have received considerable attention owing to their unique properties. However, the restrictions of lithium resources and the intrinsic energy-density constraints of Li-ion technology have intensified the search for alternative battery types for guaranteeing long-term energy security and sustainability.
Calcium-ion batteries (CIB) have attracted unprecedented attention in the battery industry. This is because calcium is abundant, inexpensive, and operates within an electrochemical window comparable to that of lithium. Despite the advantages, practical development of CIBs has been limited by slow calcium-ion mobility and insufficient stability during repeated charge-discharge cycles; hence the direct competition of the calcium-based systems with commercial Li-ion batteries has been prevented.
To overcome such challenges, a novel approach was reported by Associate Professor Yoonseob Kim’s research group at the Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology.