Lithium Battery 3.7V Lithium Polymer Battery 3.2V LifePo4 Battery 1.2V Ni-MH Battery Button Coin Battery
3.7V Battery Pack 7.4V Battery Pack 11.1V Battery Pack 14.8V Battery Pack Other Battery Pack
Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-07-23 Hits: Popular:AG11 battery
New technologies for 1.2V NiMH batteries emerge one after another, but they are still academic and difficult to break through technical bottlenecks
As the "heart" of electric vehicles, power batteries are as popular as the current hot new energy vehicles. Among them, lithium-ion batteries are favored by the new energy vehicle industry because of their high energy density, low self-discharge rate, high cycle efficiency, and long cycle life, and have huge market development potential.
However, the current problem of unstable safety of lithium-ion batteries still exists, and the frequent occurrence of "irregular fires" of batteries has always stimulated consumers' nerves, and the development of solid-state battery technology may become a new option to solve the safety problems of electric vehicles.
?Solid-state electrolytes become a trend
"The lithium-ion batteries currently used are relatively expensive, and the lithium-ion batteries produced have many safety hazards." Wang Zhenbo, a professor at Harbin Institute of Technology, said.
It is understood that the frequent accidents of large power batteries in recent years are largely due to the use of liquid electrolytes inside the batteries. "Whether it is safe or not is very critical for lithium-ion battery energy storage." Li Liangliang, associate professor of the School of Materials Science and Engineering at Tsinghua University, emphasized, "Currently, commercial lithium-ion batteries on the market generally use organic liquid electrolytes. Its disadvantage is that it is easy to burn and may leak liquid, causing environmental pollution."
The lithium-ion battery equipment fire incident that occurred in Yeongam, South Korea two months ago seems to confirm this statement.
"The liquid organic electrolyte currently used is flammable and explosive. Replacing the liquid electrolyte with a solid electrolyte is one of the most effective methods we recognize to improve the safety performance of lithium batteries." Dong Shanmu, associate researcher at the Qingdao Institute of Bioenergy and Process Technology, Chinese Academy of Sciences, said.
Li Liangliang said: "Solid electrolytes are not flammable and do not produce liquid electrolytes. Therefore, they are non-corrosive. They are an effective way to solve battery safety problems and are in line with the trend of future battery development."
?Technical bottlenecks are difficult to break through
"High safety is the basis and prerequisite for the application of energy storage batteries, and solidification is the best way to solve the safety of secondary batteries. Solid-state lithium batteries have entered a stage of accelerated global layout and research and development, and many well-known institutions are developing solid-state lithium batteries." Wen Zhaowei said.
At present, many battery and automobile manufacturers, including Samsung in South Korea, Toyota in Japan and CATL in my country, have increased their investment in the research and development of 1.2V NiMH batteries, and some batteries have entered the stage of vehicle installation and testing. Although the prospects are promising, the road to the development of 1.2V NiMH batteries is by no means smooth due to various technical and process problems.
First, there is a lack of efficient electrolyte material systems. Wen Zhaowei pointed out that solid-state battery materials are currently developing rapidly, but their comprehensive applications are relatively lacking. "As the core material of 1.2V NiMH batteries, there have been breakthroughs in the single index of solid lithium ion conductors, but the comprehensive performance cannot meet the needs of large-scale energy storage." In this regard, Dong Shanmu also believes that "the solid electrolytes used in 1.2V NiMH batteries today generally have performance shortcomings, and there is still a big gap from the requirements of high-performance lithium-ion battery systems."
Secondly, the interface treatment of solid-state electrolytes and electrodes is also a major problem currently facing 1.2V NiMH batteries. "In solid electrolytes, the lithium ion transmission impedance is very large, and the rigid interface contact area with the electrode is small. The change in electrolyte volume during charging and discharging can easily destroy the stability of the interface." Li Liangliang pointed out. In addition, in solid-state lithium batteries, in addition to the interface between the electrolyte and the electrode, there are also complex multi-level interfaces inside the electrode. Factors such as electrochemistry and deformation will cause contact failure and affect battery performance.
Again, unsatisfactory stability during long-term use is also a bottleneck in the development of long-life energy storage 1.2V NiMH batteries. "The structure and interface of 1.2V NiMH batteries will degrade over time during service, but the mechanism of the impact of degradation on the comprehensive performance of the battery is still unclear, and it is difficult to achieve long-term application." Wen Zhaowei said.
"The failure behavior of the contact interface of solid batteries and the failure mechanism behind it need to be clarified." Dong Shanmu also said, "I think that building high-performance 1.2V NiMH batteries requires two aspects. One is to build a high-performance solid electrolyte, and the other is to improve the compatibility and stability of the interface.
? New technologies emerge in an endless stream
"For 1.2V NiMH batteries, we need to study from the most basic materials, interfaces, monomers, to the final system modules. Only by fundamentally solving the key materials and interface problems can we carry out systematic process research to meet the performance requirements of single batteries. "Wen Zhaowei said.
Faced with the continuous challenges in the development process, various new technologies have emerged, and some solid-state battery technologies have made the latest breakthroughs.
For example, in solid electrolyte materials, the industry has found that 1.2V NiMH batteries based on garnet-structured lithium lanthanum zirconium oxide (LLZO) solid electrolyte systems have excellent cycle performance and rate performance, which has become a major technical hotspot. "LLZO is an excellent filler that can improve the performance of polymer-based composite solid electrolytes. The capacity of LLZO-based 1.2V NiMH batteries can still be maintained at 81% after 1,000 cycles." Li Liangliang introduced.
Dong Shanmu told another electrolyte material idea - "rigidity and flexibility", using rigid polymer skeletons and inorganic particles to merge with flexible polymer ion transport materials. "Through the Lewis acid-base interaction between polymers and between polymers and inorganic particles, new channels can be created for lithium ion transmission, greatly improving the overall performance of the electrolyte. ”
The research hotspots of interface treatment are mainly focused on interface design and modification layer. At present, gel interface design has achieved good results. Wen Zhaowei said: "By modifying the interface with gel polymer, the contact area can be increased while buffering the volume effect during the cycle. After 300 cycles at room temperature, there is basically no degradation. Such a structural design has improved the battery performance. ”
"In addition to solid electrolytes and interfaces, the integrated design of 1.2V NiMH batteries is also very important." Li Liangliang said when talking about the future development of 1.2V NiMH batteries, "Because for different fields such as energy storage and new energy vehicles, targeted battery structure design is needed."
"In general, the research on 1.2V NiMH batteries is still more academic. In terms of industrialization, because some key technologies involve the core technologies of various enterprises and cannot be obtained, the technology based on engineering applications still needs to be further explored." Wen Zhaowei said.
Read recommendations:
-20 C Lithium battery with low temperature charging.cabinet type energy storage battery Factory
Last article:1.2V NiMH battery
Next article:1.2V Ni-MH battery
Popular recommendation
701224 lipo battery company
2023-03-2218650 1500mAh 3.7V
2023-03-2218650 lithium ion battery 3.7v
2023-03-22801738 battery company
2023-03-223.2v 20ah lifepo4 battery cell
2023-03-22Lithium Battery GN12-400
2022-08-1918650 2000mAh 3.7V
2022-08-19R14
2023-02-18LR6
2022-12-07Rack-mounted energy storage battery GN-48600-l
2022-09-27LR14
2022-07-01Lithium Battery LQ12-06
2022-08-196F22
2023-03-27Aromatherapy
2022-07-22Colorful T style strap
2022-09-2218650 battery pack 3.7v
2023-06-25Ni-MH batteries
2023-06-25AG8 battery
2023-06-25no 5 alkaline battery
2023-06-25AA Ni-MH battery
2023-06-25As of my knowledge cutoff in September 2021, the lithium-ion battery industry was experiencing a sig
2023-11-17What is the working principle of lead-acid battery charging and discharging?
2024-03-11Reasons for the decrease in lithium battery capacity.LR726 battery
2023-06-13What should be paid attention to when assembling lithium batteries
2022-11-04Slow-Charge Lithium Batteries
2024-10-18AAA Dry Battery.Methods to ensure the safety technology of 18650 lithium-ion batteries
2023-10-13Nickel -hydride batteries have the following characteristics.home solar energy storage lithium batte
2023-04-25Precautions for use of lithium iron phosphate battery
2022-12-01Why 18650 lithium batteries can become an important component of modern mobile power sources.26650 b
2023-06-25LR936 battery.What are the characteristics of lithium iron phosphate batteries
2023-10-13