News
QuantumScape begins testing its first 70 x 85mm 10-layer solid state batteries almost six months ahead of schedule
QuantumScape, which is trying to create a viable solid-state lithium metal battery, recently released a report for the second quarter of 2021. The financial performance of the young company hardly speaks volumes. Of interest is information about the progress of development and its commercialization.
In an address to shareholders, the company said it is currently testing 10-layer cells.
“These cells, in a commercially suitable 70 x 85mm form factor, are tested at 1C and C / 3 rates (charge and discharge in one and three hours) at our standard temperature (25 ° C) and pressure (3.4 atmospheres). in the conditions that we consider to be relevant for automotive applications, ”says QuantumScape.
The source notes that the company aimed to begin such testing at the end of 2021.
Testing of 4-layer 70 x 85 mm cells under the same conditions showed no degradation in performance.
In other big news, QuantumScape is testing an iron phosphate (LFP) cathode.
“… We fabricated and tested our anode-free lithium metal cells with an inexpensive iron phosphate (LFP) cathode and confirmed that our chemistry and cell design are compatible with LFP as shown in the diagram below. There is a resurgence of interest in LFP, but traditional carbon anode LFP cells typically suffer from low energy densities (typically around 400 Wh / L). On the contrary, we believe that LFP in combination with a QS lithium metal anode can deliver an energy density of 600 to 700 Wh / L, approaching modern NMC chemistry. ”
According to QuantumScape, cells in the commercially acceptable 70 x 85 mm form factor went through about 450 charge / discharge cycles while retaining about 90% capacity. What’s more, the 30 x 30 mm cells have gone through over 1000 charge / discharge cycles while retaining 80% capacity. It is important to note that the second cells were not subjected to external pressure, which is usually used to “provide good interfacial contact between the layers that make up the cell, without which the cell would have unacceptably high resistance and low energy characteristics.”
The company plans to release a working prototype by 2022. It has doubled the planned capacity of its pre-pilot line, dubbed QS-0, to more than 200,000 cells per year. Commercial operation of the QS-1, co-produced with Volkswagen, will begin in 2024-2025.
Components
Many TVs are smaller. LG 48GQ900 OLED monitor with 4K resolution and 120Hz frame rate goes on sale
The official premiere of the large OLED monitor LG 48GQ900 took place in early March, and now the novelty has gone on sale. In China, the device is asking for the equivalent of $2,090, but first-time buyers can purchase a new product at a discount of $1,940.
The LG 48GQ900 is a very large monitor, many TVs are smaller. It features a 47.5-inch OLED panel with 4K resolution and 120Hz frame rate. Interestingly, due to the “overclocking” function, the frame rate can even be slightly raised – up to 138 Hz. The declared contrast ratio is 1,350,000:1, the pixel response time in Grey-to-Grey mode is 0.1 ms.
The device supports G-Sync frequency synchronization technology. The configuration also includes 20W speakers and an HDMI 2.1 port, which allows you to use the monitor not only with a PC, but also with modern PlayStation 5 and Xbox Series X consoles.
DJI recently introduced the Mini 3 Pro compact drone, and soon another compact FPV class model (the so-called “racing drone”) will appear in the company’s range. The source says what is called the new Avata.
Visually Avata is very different from DJI FPV. We can say that conceptually these are completely different models. Avata’s outdoor design makes it more suitable for indoor use.
Together with a radically redesigned design, significantly improved photo and video quality is also promised: it is expected to be at the level of the Mini 3 Pro. The third important feature is improved autonomy. The weight of the novelty will be about 500 grams, along with it, DJI is likely to introduce a new system for controlling the FPV drone. The premiere of Avata is expected in the summer.
Xiaomi has published a teaser image dedicated to the RedmiBook Pro Ryzen Edition 2022 laptop. Its premiere is expected very soon – May 24th. The image gives an idea of the display parameters of the novelty.
The laptop will receive an IPS panel with a diagonal of 15.6 inches, a resolution of 3.2K and a frame rate of 90 Hz. The maximum brightness will be 400 cd / sq.m, the DeltaE value will be less than 1.5 units. The display will cover 100% of the sRGB color space.
Nothing more has been officially said, but the source believes that the laptop will use an 8-core AMD Ryzen 7 6800H APU with 16MB L3 cache and a frequency of up to 4.7GHz. There will be no discrete 3D accelerator. The RedmiBook Pro Ryzen Edition 2022 also has a backlit keyboard, stereo speakers, and a 72 Wh battery.
Many TVs are smaller. LG 48GQ900 OLED monitor with 4K resolution and 120Hz frame rate goes on sale
The official premiere of the large OLED monitor LG 48GQ900 took place in early March, and now the novelty has...
DJI is preparing a new “racing drone” Avata with a quality camera at the level of Mini 3 Pro
DJI recently introduced the Mini 3 Pro compact drone, and soon another compact FPV class model (the so-called “racing drone”)...
RedmiBook Pro Ryzen Edition 2022 will receive a 3.2K screen with a frame rate of 90 Hz
Xiaomi has published a teaser image dedicated to the RedmiBook Pro Ryzen Edition 2022 laptop. Its premiere is expected very...
578 hp, acceleration to 100 km / h in 3 s, 13 cameras, 3 screens, wireless charging and 14 speakers. Avatr 11 electric car interior images published – the fruit of cooperation between Changan, CATL and Huawei
The electric vehicle brand Avatr launched in 2018 as a joint venture between Changan and Nio. Later, Nio withdrew from...
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