Does higher Oxidation/ reduction potential translate to higher energy storage in battery? Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)Can we create a galvanic cell with only half a cell connected to the ground?How can Nernst equation apply in this redox reaction?What are some factors that influence the voltage of voltaic/galvanic cells and why?ElectrochemistryWhat factors could lower the voltage of a galvanic cellElectrode Potential and Effect of Salt Bridge Ions on its ValueWhy does a complete discharge destroy a Li-Ion-Battery?Is flow battery cycle life really as high as the literature claims?water in redox reactionsRelationship between Yield and Applied Potentials
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Does higher Oxidation/ reduction potential translate to higher energy storage in battery?
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)Can we create a galvanic cell with only half a cell connected to the ground?How can Nernst equation apply in this redox reaction?What are some factors that influence the voltage of voltaic/galvanic cells and why?ElectrochemistryWhat factors could lower the voltage of a galvanic cellElectrode Potential and Effect of Salt Bridge Ions on its ValueWhy does a complete discharge destroy a Li-Ion-Battery?Is flow battery cycle life really as high as the literature claims?water in redox reactionsRelationship between Yield and Applied Potentials
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Some articles refer to the fact that Lithium is preferred metal of choice for batteries because their half cell voltage is high (slightly above 3V)
If that is the case why can't we use other metals like Mn which can have higher oxidation potential (Mn can have +7 oxidation state which translates to higher oxidation potential)?
electrochemistry
asked Mar 31 at 16:16
Karthick SKarthick S
141
$endgroup$
add a comment |
$begingroup$
Some articles refer to the fact that Lithium is preferred metal of choice for batteries because their half cell voltage is high (slightly above 3V)
If that is the case why can't we use other metals like Mn which can have higher oxidation potential (Mn can have +7 oxidation state which translates to higher oxidation potential)?
electrochemistry
asked Mar 31 at 16:16
Karthick SKarthick S
141
$endgroup$
2
$begingroup$
There is a difference in a high oxidation state and a large EMF. A number of factors are considered in making a battery, not just the EMF of the half cell. A battery can relatively easily have multiple cells to get a higher voltage.
$endgroup$
– MaxW
Mar 31 at 16:37
add a comment |
$begingroup$
Some articles refer to the fact that Lithium is preferred metal of choice for batteries because their half cell voltage is high (slightly above 3V)
If that is the case why can't we use other metals like Mn which can have higher oxidation potential (Mn can have +7 oxidation state which translates to higher oxidation potential)?
electrochemistry
asked Mar 31 at 16:16
Karthick SKarthick S
141
$endgroup$
Some articles refer to the fact that Lithium is preferred metal of choice for batteries because their half cell voltage is high (slightly above 3V)
If that is the case why can't we use other metals like Mn which can have higher oxidation potential (Mn can have +7 oxidation state which translates to higher oxidation potential)?
electrochemistry
electrochemistry
asked Mar 31 at 16:16
Karthick SKarthick S
141
asked Mar 31 at 16:16
Karthick SKarthick S
141
asked Mar 31 at 16:16
Karthick SKarthick S
141
asked Mar 31 at 16:16
Karthick SKarthick S
141
asked Mar 31 at 16:16
Karthick SKarthick S
141
141
2
$begingroup$
There is a difference in a high oxidation state and a large EMF. A number of factors are considered in making a battery, not just the EMF of the half cell. A battery can relatively easily have multiple cells to get a higher voltage.
$endgroup$
– MaxW
Mar 31 at 16:37
add a comment |
2
$begingroup$
There is a difference in a high oxidation state and a large EMF. A number of factors are considered in making a battery, not just the EMF of the half cell. A battery can relatively easily have multiple cells to get a higher voltage.
$endgroup$
– MaxW
Mar 31 at 16:37
2
2
$begingroup$
There is a difference in a high oxidation state and a large EMF. A number of factors are considered in making a battery, not just the EMF of the half cell. A battery can relatively easily have multiple cells to get a higher voltage.
$endgroup$
– MaxW
Mar 31 at 16:37
$begingroup$
There is a difference in a high oxidation state and a large EMF. A number of factors are considered in making a battery, not just the EMF of the half cell. A battery can relatively easily have multiple cells to get a higher voltage.
$endgroup$
– MaxW
Mar 31 at 16:37
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
Energy storage depends on the electromotive potential (i.e. difference between species in the electromotive series) and on the number of electrons available.
Li, for example, has an oxidation potential of ~3.04 V relative to hydrogen, but Al has one of 1.66 V, so Li has the greater potential. On the other hand, Li has only one freely available outer electron, but Al has three, so Al stores more charge per mol, giving three times the capacity in coulombs on that basis. On the gripping hand, however, Li has a mass of ~7 amu, and Al is ~27 amu, so an aluminum cell carries around the dead weight of unused neutrons and inner electron/protons.
So, depending on the needs, Li batteries weigh relatively little and provide comparatively high potential, aluminum batteries would hold more charge at a bit lower voltage, and even Zn is useful, though deficient compared to those others in volts and coulombs (it also has a bunch of inert neutrons, but there is no charge for them), because it is relatively inexpensive.
answered Mar 31 at 18:29
DrMoishe PippikDrMoishe Pippik
14.7k1231
$endgroup$
add a comment |
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1 Answer
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1 Answer
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$begingroup$
Energy storage depends on the electromotive potential (i.e. difference between species in the electromotive series) and on the number of electrons available.
Li, for example, has an oxidation potential of ~3.04 V relative to hydrogen, but Al has one of 1.66 V, so Li has the greater potential. On the other hand, Li has only one freely available outer electron, but Al has three, so Al stores more charge per mol, giving three times the capacity in coulombs on that basis. On the gripping hand, however, Li has a mass of ~7 amu, and Al is ~27 amu, so an aluminum cell carries around the dead weight of unused neutrons and inner electron/protons.
So, depending on the needs, Li batteries weigh relatively little and provide comparatively high potential, aluminum batteries would hold more charge at a bit lower voltage, and even Zn is useful, though deficient compared to those others in volts and coulombs (it also has a bunch of inert neutrons, but there is no charge for them), because it is relatively inexpensive.
answered Mar 31 at 18:29
DrMoishe PippikDrMoishe Pippik
14.7k1231
$endgroup$
add a comment |
$begingroup$
Energy storage depends on the electromotive potential (i.e. difference between species in the electromotive series) and on the number of electrons available.
Li, for example, has an oxidation potential of ~3.04 V relative to hydrogen, but Al has one of 1.66 V, so Li has the greater potential. On the other hand, Li has only one freely available outer electron, but Al has three, so Al stores more charge per mol, giving three times the capacity in coulombs on that basis. On the gripping hand, however, Li has a mass of ~7 amu, and Al is ~27 amu, so an aluminum cell carries around the dead weight of unused neutrons and inner electron/protons.
So, depending on the needs, Li batteries weigh relatively little and provide comparatively high potential, aluminum batteries would hold more charge at a bit lower voltage, and even Zn is useful, though deficient compared to those others in volts and coulombs (it also has a bunch of inert neutrons, but there is no charge for them), because it is relatively inexpensive.
answered Mar 31 at 18:29
DrMoishe PippikDrMoishe Pippik
14.7k1231
$endgroup$
add a comment |
$begingroup$
Energy storage depends on the electromotive potential (i.e. difference between species in the electromotive series) and on the number of electrons available.
Li, for example, has an oxidation potential of ~3.04 V relative to hydrogen, but Al has one of 1.66 V, so Li has the greater potential. On the other hand, Li has only one freely available outer electron, but Al has three, so Al stores more charge per mol, giving three times the capacity in coulombs on that basis. On the gripping hand, however, Li has a mass of ~7 amu, and Al is ~27 amu, so an aluminum cell carries around the dead weight of unused neutrons and inner electron/protons.
So, depending on the needs, Li batteries weigh relatively little and provide comparatively high potential, aluminum batteries would hold more charge at a bit lower voltage, and even Zn is useful, though deficient compared to those others in volts and coulombs (it also has a bunch of inert neutrons, but there is no charge for them), because it is relatively inexpensive.
answered Mar 31 at 18:29
DrMoishe PippikDrMoishe Pippik
14.7k1231
$endgroup$
Energy storage depends on the electromotive potential (i.e. difference between species in the electromotive series) and on the number of electrons available.
Li, for example, has an oxidation potential of ~3.04 V relative to hydrogen, but Al has one of 1.66 V, so Li has the greater potential. On the other hand, Li has only one freely available outer electron, but Al has three, so Al stores more charge per mol, giving three times the capacity in coulombs on that basis. On the gripping hand, however, Li has a mass of ~7 amu, and Al is ~27 amu, so an aluminum cell carries around the dead weight of unused neutrons and inner electron/protons.
So, depending on the needs, Li batteries weigh relatively little and provide comparatively high potential, aluminum batteries would hold more charge at a bit lower voltage, and even Zn is useful, though deficient compared to those others in volts and coulombs (it also has a bunch of inert neutrons, but there is no charge for them), because it is relatively inexpensive.
answered Mar 31 at 18:29
DrMoishe PippikDrMoishe Pippik
14.7k1231
edited Mar 31 at 23:37
answered Mar 31 at 18:29
DrMoishe PippikDrMoishe Pippik
14.7k1231
answered Mar 31 at 18:29
DrMoishe PippikDrMoishe Pippik
14.7k1231
answered Mar 31 at 18:29
DrMoishe PippikDrMoishe Pippik
14.7k1231
14.7k1231
add a comment |
add a comment |
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There is a difference in a high oxidation state and a large EMF. A number of factors are considered in making a battery, not just the EMF of the half cell. A battery can relatively easily have multiple cells to get a higher voltage.
$endgroup$
– MaxW
Mar 31 at 16:37