Negative plate of multi-element nano vanadium power battery
A technology of power battery and negative pole piece, which is applied in battery electrodes, non-aqueous electrolyte battery electrodes, electrode carriers/current collectors, etc., can solve the problems of easy powder drop, poor cycle performance, large internal resistance, etc., and prolong the service life. , strong adhesion, the effect of preventing powder drop
Inactive Publication Date: 2012-05-02
中星动力新能源产业投资淮安有限公司 +1
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Problems solved by technology
[0003] However, the electrode pole pieces of the existing lithium-ion batteries are prone to powder loss, resulting in low battery capacity, poor cycle performance, and large internal resistance; thus shortening the service life of the electrode pole pieces of the lithium-ion battery
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[0025] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0026] see figure 1 , an embodiment of a multi-element nano-vanadium power battery negative electrode sheet 100 of the present invention is proposed, including a negative electrode current collector 110, and the upper and lower sides of the negative electrode current collector 110 are respectively provided with an intermediate thin layer 120 and an active layer from the inside to the outside. Outer layer 130.
[0027] In this embodiment, since the negative electrode current collector 110 is a rough copper foil, the adhesion between the negative electrode current collector 110 and the middle thin layer 120 is tighter, thereby improving the adhesion between the two.
[0028] Further, in the above embodiment of the multi-element nano-vanadium power battery negative electrode sheet 100, the middle thin layer 120 is provi...
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Abstract
The invention discloses a negative plate of a multi-element nano vanadium power battery and a preparation method for the negative plate of the multi-element nano vanadium power battery. The plate comprises a negative current collector of which the upper and lower surfaces are sequentially provided with a middle thin layer and an active outer layer from inside to outside respectively. In the negative plate of the multi-element nano vanadium power battery and the preparation method for the negative plate of the multi-element nano vanadium power battery, the upper and lower rough surfaces of the negative current collector are sequentially provided with the middle thin layer and the active outer layer from inside to outside respectively, and the middle thin layer is 1 to 5 microns thick and comprises components which are substantially the same as those of the active outer layer, so that adhesive forces between the middle thin layer and the negative current collector and between the middle thin layer and the active outer layer are strong, the powder dropping phenomenon of the negative plate of the multi-element nano vanadium power battery is effectively prevented, and the service life of the negative plate of the multi-element nano vanadium power battery is prolonged.
Description
technical field [0001] The invention relates to the technical field of batteries, in particular to a multi-element nano-vanadium power battery negative pole piece and a preparation method thereof. Background technique [0002] In the field of batteries, there are many types of batteries, such as lithium-ion batteries, lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries, etc. Among them, compared with other batteries, lithium-ion batteries have high working voltage, high energy density, and safety. Good performance, no memory effect, no pollution, etc., so lithium-ion batteries have become a key research field for new energy development, with broad application prospects. [0003] However, the electrode pole pieces of the existing lithium-ion batteries are prone to powder loss, resulting in low battery capacity, poor cycle performance, and large internal resistance; thereby shortening the service life of the electrode pole pieces of the lithium-ion ba...
Claims
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Login to View More IPC IPC(8): H01M4/13H01M4/70H01M4/139
CPCY02E60/122Y02E60/10
Inventor 王晓东
Owner 中星动力新能源产业投资淮安有限公司