POSTECH-UNIST joint research team succeeds in developing anode-free Li batteries with maximized energy density, improving energy density by 40%.
The number of newly registered electric vehicles (EVs) in Korea surpassed 100,000 units last year alone. Norway is the only other country to match such numbers. The core materials that determine the battery life and charging speed of now commonly seen EVs are anode materials. Korea’s domestic battery industry has been committed to finding revolutionary ways to increase the battery capacity by introducing new technologies or other anode materials. But what if we get rid of anode materials altogether?
A POSTECH research team led by Professor Soojin Park and PhD candidate Sungjin Cho (Department of Chemistry) in collaboration with Professor Dong-Hwa Seo and Dr. Dong Yeon Kim (School of Energy and Chemical Engineering) at Ulsan Institute of Science and Technology (UNIST) have developed anode-free lithium batteries with performance of long battery life on a single charge.
The newly developed anode-free battery has a volumetric energy density of 977Wh/L which is 40% higher than the conventional batteries (700wh/L). This means that the battery can run for 630km on a single charge.
Batteries usually change the structure of anode materials as lithium ions flow to and from the electrode during repetitive charging and discharging. This is why the battery capacity decreases over time. It was thought that if it was possible to charge and discharge only with a bare anode current collector without anode materials, the energy density – which determines the battery capacity – would increase. However, this method had a critical weakness which causes significant swelling of the anode volume and reduces the battery lifecycle. It swelled because there was no stable storage for lithium in the anode.
To overcome this issue, the research team succeeded in developing an anode-free battery in a commonly-used carbonate-based liquid electrolyte by adding an ion conductive substrate. The substrate not only forms an anode protective layer but also helps minimize the bulk expansion of the anode.
The study shows that the battery maintained high capacity of 4.2mAh cm-2 and high current density of 2.1 mA cm-2 for a long period in the carbonate-based liquid electrolyte. It was also proven both in theory and through experiments that substrates can store lithium.
Original Article: The Battery that Runs 630 km on a Single Charge
More from: Pohang University of Science and Technology | Ulsan Institute of Science and Technology
The Latest Updates from Bing News
Go deeper with Bing News on:
Anode-free lithium battery
- Toshiba Develops New Li-Ion Battery with Cobalt-Free 5V Class High-Potential Cathode
Toshiba’s new lithium-ion battery cathode is free of cobalt and contains less nickel ... ion battery that combines its new cathode with a niobium titanium oxide (NTO) anode. In tests, the battery ...
- Testwork proves Lithium Energy’s Burke project can produce battery anode material
Spheronising and purification test work confirm that Lithium Energy’s project can provide feedstock to the battery anode materials market.
- A new approach to create fast-charging lithium-ion batteries with a graphite-based anode
In recent years, engineers and material scientists have been trying to create increasingly advanced battery ... based lithium-ion batteries," Shuibin Tu, Bao Zhang and their colleagues wrote in their ...
- The Next Leap in Battery Tech: Lithium-Ion Batteries Are No Longer the Gold Standard
Lithium metal, chosen for battery anodes due to its superior energy density compared to other materials, is a smart choice. Yet, challenges arise at the interface between the electrode and the ...
- Lithium-ion batteries are no longer the gold standard in battery tech, researchers say
To realize a truly carbon-free economy, batteries with better performance ... forms on the surface of lithium metal during battery operation. Another issue of lithium metal anode is so called ...
Go deeper with Bing News on:
Anode-free battery
- Toshiba Develops New Li-Ion Battery with Cobalt-Free 5V Class High-Potential Cathode
Toshiba’s new lithium-ion battery cathode is free of cobalt and contains less nickel ... ion battery that combines its new cathode with a niobium titanium oxide (NTO) anode. In tests, the battery ...
- Our Next Energy’s Dual Chemistry Gemini Battery Powers BMW iX 608 Miles on a Single Charge
Our Next Energy Inc. (ONE), a Michigan-based energy storage technology company, today announced its Gemini dual-chemistry battery achieved 608.1 miles of range in a BMW iX on a single charge. The ...
- New coating said to extend battery life
Lotte, a petrochemical company wanting to expand in the global battery electric vehicle (BEV) supply chain, said the two companies had developed new coating materials claimed to help protect battery ...
- EV battery startup ONE cuts workforce by 25%
Our Next Energy (ONE) said on Monday it has cut around 25% of its workforce, or 128 employees, as the electric-vehicle battery startup deals with high borrowing costs and an uncertain economy.
- New Silicon Anode batteries offer even faster charging and longer battery life
Rick Costantino, Group14 However, integrating silicon into battery anodes isn’t without its challenges. Silicon tends to swell during charging, which can lead to battery damage and a shorter ...
