Korean scientists have created high-performing Ni-rich cathodes for all-solid-state batteries, solving key degradation issues.
In an era where electronic devices and electric vehicles demand better battery performance, scientists are racing to develop batteries that last longer, charge faster, and store more energy.A promising solution lies in all-solid-state batteries , which could outperform traditional lithium-ion batteries in both efficiency and safety.
At the heart of this innovation is the cathode active material , particularly those rich in nickel , which plays a crucial role in boosting battery performance.Role of Ni-rich cathodesASSBs differ from conventional lithium-ion batteries by using solid electrolytes instead of liquid ones, reducing the risk of fire and improving energy storage capacity. However, the performance of these batteries heavily depends on the effectiveness of their cathodes. Researchers have been focusing on Ni-rich cathodes because of their potential to significantly boost energy density. Yet, despite their advantages, these cathodes have shown certain limitations that affect battery longevity.“ASSBs comprising Ni-rich layered cathode active materials and sulfide solid electrolytes are promising candidates for next-generation batteries with high energy densities and safety,” wrote Nam-Yung Park, Han-Uk Lee, and their colleagues in their paper. “However, severe capacity fading occurs due to surface degradation at the CAM–electrolyte interface and severe lattice volume changes in the CAM, resulting in inner-particle isolation and detachment of the CAM from the electrolyte.”Challenges and breakthroughs in Ni-rich cathode designA major challenge with Ni-rich cathodes is capacity fading, which occurs when batteries lose their ability to hold a charge over time. This degradation is primarily caused by chemical reactions at the cathode-electrolyte interface and structural changes in the cathode itself. The expansion and contraction of cathode particles during charging cycles lead to material breakdown, reducing battery efficiency.To better understand these issues, researchers at Hanyang University in South Korea conducted a study examining how different levels of nickel in the cathode impact degradation. They synthesized four different types of Ni-rich cathodes, with nickel content ranging from 80% to 95%, and analyzed their effects on battery performance.“We quantified the capacity fading factors of Ni-rich LiO2 composite ASSB cathodes as functions of Ni content,” wrote Park, Lee, and their colleagues. “Surface degradation at the CAM–electrolyte interface was found to be the main cause of capacity fading in a CAM with 80% Ni content, whereas inner-particle isolation and detachment of the CAM from the electrolyte play a substantial role as the Ni content increases to 85% or more.”Advancing Ni-rich cathode performanceThe study found that surface degradation was the primary issue for cathodes with 80% nickel, while higher nickel content led to particle isolation and detachment, further reducing battery efficiency. Using this knowledge, the researchers developed a modified Ni-rich cathode with an optimized surface and structure. These cathodes featured a columnar design, which significantly reduced particle detachment and improved overall stability.When tested in a pouch-type full cell with a C/Ag anode-less electrode, the newly designed cathodes retained 80.2% of their initial capacity after 300 charge cycles. This marks a significant step toward improving ASSBs, making them more reliable and suitable for widespread adoption.By refining Ni-rich cathodes, researchers are paving the way for high-performance, long-lasting, and safer all-solid-state batteries. This breakthrough could revolutionize energy storage, driving advancements in electronic devices, electric vehicles, and other battery-powered applications.The team at Hanyang University published their findings in Nature Energy.
Battery Energy &Amp Environment Solid State Batteries
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Jackery Explorer 300 Portable Power Station Bundle: $200 Off for a Limited Time!Get ready for summer adventures with the Jackery Explorer 300 portable power station bundle. This deal gets you a powerful portable power station with solar charging capabilities for an unbeatable price.
Read more »
Cardano Whales Dump 300 Million ADA, Dampening Market EnthusiasmCardano (ADA) experienced a significant sell-off as whales dumped 300 million tokens in the last 48 hours. This move triggered a decline in trading volume and raised concerns about the short-term price outlook for ADA. Despite the bearish pressure, long-term analysis suggests a bullish outlook for the coin.
Read more »
BABYMONSTER’s “BATTER UP” Becomes Their 2nd MV To Hit 300 Million ViewsBABYMONSTER’s debut music video has just reached an exciting milestone! On February 4 at around 11:40 p.m. KST, BABYMONSTER’s music video for their debut
Read more »
Dallas Developer Plans 300-400 Apartment Units in San Diego's Sorrento MesaA Dallas-based multi-family housing developer, JPI, has acquired an empty office building in San Diego's Sorrento Mesa with plans to construct a 5- or 6-story apartment complex. This project marks a significant shift for the area, traditionally dominated by tech and biotech companies, by introducing residential housing.
Read more »
Convincing Mercedes 300 SL Gullwing Replica Sells for $141,000An incredibly detailed replica of the iconic Mercedes 300 SL Gullwing, built from a 2001 SLK320, is up for sale on Bring a Trailer. The replica boasts a near-identical wheelbase to the original and features an authentic interior with a flip-down steering wheel. It's been crafted with genuine parts and impresses with its resemblance to the real deal. Despite some subtle giveaways, the replica is a testament to the skill of its creator and offers a unique opportunity to own a piece of automotive history at a fraction of the cost.
Read more »
If You're Ready for Metal Gear Solid Delta, It's Time to Check Out Some Snake Stories You MissedSolid Snake in the Metal Gear Solid game
Read more »