Lithium-ion has been the main battery material for a long time now and the smartphone industry is looking to switch from this lithium to a more advanced solution. However, due to some challenges, smartphone makers to refrain from using graphene in their smartphone’s batteries.
But now, it seems Huawei has finally stepped foot into this matter, because recently, Huawei has certified a new design patent that is recently published by China’s State Intellectual Property Office.
Before we jump into the details of this patent, here’s some information that you may want to know about graphene:
A traditional lithium-ion battery inside a standard smartphone takes an average of about 90 minutes, and the time shrinks depending on the charger’s speed. On the other hand, a battery with a Graphine cell is much faster and a full charge of a 3000mAh battery takes about 20 minutes with a 60W charging brick.
In terms of lifespan, most of the batteries can manage around 300 and 500 charge cycles but real graphene batteries can last about 1500 cycles for the same capacity and because the cell generates much less heat, which helps to run your smartphone cooler and safer. (via DigitalTrends)
The patent says, “a conductive binder for lithium-ion batteries and its preparation method, lithium-ion battery electrode pole and preparation method, and a lithium-ion battery.”
According to the patent’s description, the tech uses polyvinyl alcohol, polyethylene glycol, polystyrene, starch, sodium alginate, etc. as a binder, and graphene as a conductive material. The amount of graphene is 0.1%-10% of the total mass, while the thickness of the graphene particles is 5nm-50nm, and the D50 particle size is 50nm-5000nm.
This patent shows the use case of two adhesives:
- First accounts for 20%-50%
- The second adhesive uses materials such as polyacrylic acid and polyimide.
The first and the second adhesives are combined through chemical bonds.
In the figure below you can see:
- Silicon particles
- A binder
Silicon particles are described inside the hollow structure and even if they expand they won’t lose the performance.
In order to increase the energy density of current lithium batteries, graphite anode materials are often replaced with alloy materials such as silicon.
However, silicon will expand in volume during the cycle and fall off, which will surely cause a rapid drop in battery life. To solve this issue, the patent uses a new type of conductive adhesive to bind silicon particles and combine the adhesives and conductive agent into one.
When the silicon particles are expanded with lithium insertion, the polymer chain of the binder stretches, when the silicon particles are de-lithiated and shrink, the polymer chain of the binder is wound and contracted again, so that the graphene and silicon are always in contact.
After 50 cycles of batteries made using this patent, the battery capacity retaining rate is over 90% and discharge efficiency is as high as 97% and 98%.
It’s also stated that the conductive binder acts as both a conductive agent and a binder, which can increase the content of lithium-intercalation active materials in the positive and negative electrodes, thereby increasing the energy density of the cell.
So, the Chinese tech giant is not fully shifting to graphene but it’s planning to use around 10 percent of it. Since Huawei is using only a limited amount of graphene, the main aim of this patent is to boost the lifecycle and some of its performance of the exiting lithium-ion battery, which could give positive results in overall battery performance.
Source – ithome
Global smartphone sales declines 100 million units in May: Report
The Globe is suffering from the COVID pandemic for the past two consecutive years and this heavy decline in smartphone market value and technology year on year. As per the recent counterpoint report, the global smartphone market sales declines 4 percent month on month.
This monthly decline in smartphone sales highly drops the market value. Even after a ‘V’-shaped recovery in the year 2020, the market is not up like pre-pandemic. Meanwhile, as per the recent counterpoint report, the global smartphone market sales decline by 4 percent every month.
On the other hand, while talking about the yearly declination the global smartphone market sale dropped by 10 percent year on year in May 2022 to 96 million units. This is a decrease from the for 2 consecutive past months and a decrease from the same period of the previous year for 11 consecutive months.
Reason for the downfall of Global smartphone market sales in May 2022:
In particular, the corona crisis has not been resolved at an extension but the smartphone market is still suffering from a slowdown in demand due to various factors such as inflation.
Additionally, the negative outlook continues during the summer, but mainly with the normalization of China, the continuous improvement of the supply-demand balance of the technology supply chain, and the improved macro-economy with mid-peak inflation.
Due to the environment, it is expected to improve gradually market value in the second half of the year, the time before going down again. The upcoming month can be marked as the promotional period of the smartphone market region-wise. Like,
- 618 in China
- August, Diwali in India
- Christmas and New Year
The Director Tarun Pathak stated that:
The demand for a smartphone especially in the advanced economies is driven by replacement, which makes it a discretionary purchase. And inflationary pressures are leading to pessimistic consumer sentiment around the globe with people postponing non-essential purchases, including smartphones. The strengthening US dollar is also hurting emerging economies. A segment of consumers is likely to wait for seasonal promotions before purchasing to offset some of the cost pressures
Huawei Mate 50 Pro screen protector has no waterfall design but a potential ‘notch’
Huawei Mate 50 series is the next generation of Huawei flagship and the company has fastened up the pace to launch this smartphone lineup among consumers. The latest screen protector leak on this matter, suggests that Huawei Mate 50 Pro could leave the large waterfall design and may feature a notch system.
According to the information, a tipster from Weibo (8090DigitalMeishi) has shared a screen protector, which, according to the tipster, belongs to Huawei Mate 50. What’s more interesting is that the screen protector reveals some key information regarding the Mate 50 design, this includes the curvature on the left and right sides and a small cutout on the head.
By looking at the leaked Huawei Mate 50 Pro screen protector design, we can see that the curvature is not waterfall and it’s just a simplified version, similar to what we’ve seen in Mate 20 Pro. On the other hand, the cutout on the head could relate to the earpiece system, and not being confusing it’ll lead to the return of the Notch system.
Exploring further, the display has low bezels on each side, making the display more enjoyable but if Huawei is going to use the notch system then how much it would cover the display.
Talking about the notch, the Huawei Mate 20 series was the first to adopt such a front camera design that houses different types of lenses. These are:
- A front camera
- Dot projector
- Flood Illuminator
- Proximity sensor
- Ambient light sensor
- IR Camera
Yes, the notch is kind of sophisticated, and it was quite an impressive inspiration from Apple’s face id but there was some issue that has been found after the launch of the Mate 20 series, which has lowered, Huawei’s belief in this system. The Chinese tech maker pursuit the same concept on Mate 30 notch.
Therefore, the company later focused on features such as a front depth camera and not face security. The Chinese tech maker has also made a revolution on the front camera gesture features, which have not been used before.
Huawei Mate 50 is far away from the launch date, but previous reports have speculated this phone series unveil in August. If you want to learn more about the Huawei Mate 50 series, check the article linked below.
Samsung begins mass production of 3nm chipsets
Samsung is celebrating its first-ever production of the 3nm process. Meanwhile, today, Samsung officially announced to begins the manufacturing of chips using a 3nm process with the advanced Gate-All-Around GAA transistor architecture.
The GAA technology is to use for the first time ever in the history of Samsung. It exceeds the execution boundary of FinFET and lowers the power supply voltage level to improve power efficiency, and at the same time improves the performance by increasing the drive current capacity.
Well, is known for being the world-leading semiconductor technology and this initiative makes them more popular among the world’s top semiconductor manufacturing companies.
The company plans to begin its first application based on nanosheet transistors with semiconductor chips for a high level of performance and power computing. Which will further expandable to smartphone processors.
Samsung GAA technology:
The 3nm chips with Gate-All-Around transistor architecture are very beneficial for the following points including Design Technology Co-Optimization (DTCO), and it helps increase power, performance, and area (PPA) benefits.
Additionally, the first generation of 3nm chips can decrease power consumption by up to 45% and improve performance by 23%. On the other hand, the second generation of the 3nm process reduced power consumption by up to 50%, and improved performance by 30%, notably the result are taken as compared by compared to the 5mn chips.
- 1st-gen 3nm: reduce power consumption by up to 45%, improve performance by 23% and reduce the area by 16%
- 2nd-gen 3nm: reduce power consumption by up to 50%, improve performance by 30% and reduce the area by 35%