Magnesium Hexafluorophosphate Mg(PF6)2 New Electrolyte additives
Magnesium Hexafluorophosphate
Contact
Joyce Luo
sales03@chemfish.com
www.chemfish.com
Mg(PF6)2-based electrolytes for Mg-ion batteries have not received the same attention as the analogous LiPF6-based electrolytes used in most Li-ion cells owing to the perception that the PF6–anion decomposes on and passivates Mg electrodes.
No synthesis of the Mg(PF6)2 salt has been reported, nor have its solutions been studied electrochemically. Here, we report the synthesis of the complex Mg(PF6)2(CH3CN)6 and its solution-state electrochemistry.
Solutions of Mg(PF6)2(CH3CN)6 in CH3CN and CH3CN/THF mixtures exhibit high conductivities (up to 28 mS·cm–1) and electrochemical stability up to at least 4 V vs Mg on Al electrodes. Contrary to established perceptions, Mg electrodes are observed to remain electrochemically active when cycled in the presence of these Mg(PF6)2-based electrolytes, with no fluoride (i.e., MgF2) formed on the Mg surface.
Stainless steel electrodes are found to corrode when cycled in the presence of Mg(PF6)2 solutions, but Al electrodes are passivated. The electrolytes have been used in a prototype Mg battery with a Mg anode and Chevrel (Mo3S4)-phase cathode.
A multi-institutional team of scientists led by Sarbajit Banerjee, a chemist at Texas A&M university, has discovered a special metal oxide, magnesium, that can be used as a cathode material for batteries. In terms of safety, cost and performance, they are better than lithium batteries.
Banerjee, wrote in an article: the development of renewable energy, is limited by energy storage media, the current dominant lithium-ion technology, but the safety and long-term supply of lithium is still a serious problem Magnesium, by contrast, more abundant than lithium, melting point higher, more stable when charging, if you can determine a suitable cathode, it is possible to draw energy density increased by more than five times the Banerjee says:We essentially reconfigured the atoms to provide different pathways for magnesium ions to travel, resulting in a viable cathode material that can be easily inserted and pulled out during battery discharge and charging.
This rare phenomenon is through the preparation method of vanadium pentoxide is known as the stability of the nature, by design, limit the position of magnesium ions in a relatively unstable position to implement the metastable atoms can help prevent magnesium ions trapped in the material, and promote its ability to store electric charge full collection, and many times after charging cycles, the degradation of the material is almost negligible laptops and mobile phones of development, cannot leave the progress of lithium ion batteries, compared with lead-acid batteries and nickel-metal hydride batteries, lithium battery provides better and rechargeable energy storage capacityBut lithium is expected to be increasingly in short supply in the long term, and lithium-ion batteries have some safety concerns.
Texas A&M chemistry graduate student and NASA said:In addition to consumer application more secure, magnesium ion technology itself is also very attractive, because each magnesium ions can emit two electrons, and each lithium ion is only one which means the battery capacity could double .
since the 1990 s for the first time put forward the concept of magnesium battery, the main problem lies in the lack of proper cathode or positive electrode the study marks an important turning point, because it represents the major progress to solve the problem of cathode, but at the same time we have a lot of work to doWhile this study provides many insights, there are other fundamental issues to overcome before magnesium batteries become a reality, but this breakthrough also brings magnesium batteries closer to reality
Mg(PF6)2-based electrolytes for Mg-ion batteries have not received the same attention as the analogous LiPF6-based electrolytes used in most Li-ion cells owing to the perception that the PF6–anion decomposes on and passivates Mg electrodes.
No synthesis of the Mg(PF6)2 salt has been reported, nor have its solutions been studied electrochemically. Here, we report the synthesis of the complex Mg(PF6)2(CH3CN)6 and its solution-state electrochemistry.
Solutions of Mg(PF6)2(CH3CN)6 in CH3CN and CH3CN/THF mixtures exhibit high conductivities (up to 28 mS·cm–1) and electrochemical stability up to at least 4 V vs Mg on Al electrodes. Contrary to established perceptions, Mg electrodes are observed to remain electrochemically active when cycled in the presence of these Mg(PF6)2-based electrolytes, with no fluoride (i.e., MgF2) formed on the Mg surface.
Stainless steel electrodes are found to corrode when cycled in the presence of Mg(PF6)2 solutions, but Al electrodes are passivated. The electrolytes have been used in a prototype Mg battery with a Mg anode and Chevrel (Mo3S4)-phase cathode.
| Product Name: | Magnesium Hexafluorophosphate | ||||||
| Molecular Formula: | Mg(PF6)2 | ||||||
| Molecular Weight: | 314.25 | ||||||
| Appearance: | Colorless crystal | ||||||
| Main assay: | ≥98% | ||||||
| Impurities: |
| ||||||
| Packing: | - | ||||||
| Uses: | Intermediate electrolyte additives |
A multi-institutional team of scientists led by Sarbajit Banerjee, a chemist at Texas A&M university, has discovered a special metal oxide, magnesium, that can be used as a cathode material for batteries. In terms of safety, cost and performance, they are better than lithium batteries.
Banerjee, wrote in an article: the development of renewable energy, is limited by energy storage media, the current dominant lithium-ion technology, but the safety and long-term supply of lithium is still a serious problem Magnesium, by contrast, more abundant than lithium, melting point higher, more stable when charging, if you can determine a suitable cathode, it is possible to draw energy density increased by more than five times the Banerjee says:We essentially reconfigured the atoms to provide different pathways for magnesium ions to travel, resulting in a viable cathode material that can be easily inserted and pulled out during battery discharge and charging.
This rare phenomenon is through the preparation method of vanadium pentoxide is known as the stability of the nature, by design, limit the position of magnesium ions in a relatively unstable position to implement the metastable atoms can help prevent magnesium ions trapped in the material, and promote its ability to store electric charge full collection, and many times after charging cycles, the degradation of the material is almost negligible laptops and mobile phones of development, cannot leave the progress of lithium ion batteries, compared with lead-acid batteries and nickel-metal hydride batteries, lithium battery provides better and rechargeable energy storage capacityBut lithium is expected to be increasingly in short supply in the long term, and lithium-ion batteries have some safety concerns.
Texas A&M chemistry graduate student and NASA said:In addition to consumer application more secure, magnesium ion technology itself is also very attractive, because each magnesium ions can emit two electrons, and each lithium ion is only one which means the battery capacity could double .
since the 1990 s for the first time put forward the concept of magnesium battery, the main problem lies in the lack of proper cathode or positive electrode the study marks an important turning point, because it represents the major progress to solve the problem of cathode, but at the same time we have a lot of work to doWhile this study provides many insights, there are other fundamental issues to overcome before magnesium batteries become a reality, but this breakthrough also brings magnesium batteries closer to reality
As a global Contract Research Organization (CRO), headquartered in New York, USA, Alfa Chemistry has served the pharmaceutical and biotechnology industries for eight years. N-octylpyridinium hexafluorophosphate
回复删除These websites are really needed, you can learn a lot. Teeto
回复删除