Sealed basic Ni-Cd secondary cell

A secondary battery, alkaline technology, used in alkaline storage batteries, alkaline storage battery electrodes, battery electrodes, etc., can solve the problems of unsafe batteries, long duration, high internal pressure, etc.

Inactive Publication Date: 2004-12-29
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nickel-cadmium batteries are easy to generate hydrogen at the negative electrode under high-rate charging, especially under overcharge conditions, and hydrogen is difficult to be absorbed in the battery; High internal pressure, causing unsafe use of batteries

Method used

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  • Sealed basic Ni-Cd secondary cell
  • Sealed basic Ni-Cd secondary cell
  • Sealed basic Ni-Cd secondary cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Below in conjunction with accompanying drawing, the nickel-cadmium secondary battery of the present invention is illustrated in detail

[0020] Weigh 80 parts by weight (weight fraction, the same below) of CdO powder, 20 parts of Cd powder, 2 parts of Ni(OH) 2 , 6 parts of Ni powder, 0.3 parts of acetylene black, 5 parts of CMC, 2.5 parts of PVA, 5 parts of H 2 O, 2 parts of PTFE, mixed and stirred, filled into foamed nickel or coated on a porous steel strip, dried and compacted to make a cadmium negative electrode sheet; another 95 parts of MmNi were weighed 5 series of MmNi 3.55 co 0.75 mn 0.4 Al 0.3 Hydrogen storage alloy powder, 4 parts of carbon powder or acetylene black, 1 part of CMC or 1 part of HPMC, 1 part of SBR mixed with water, filled in foamed nickel or coated on a porous steel strip, made of the same height as the cadmium negative plate The equal hydrogen storage alloy negative electrode sheet is then cut into small pieces of certain length (the prop...

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Abstract

The invention relates to a sealed alkali nickel-cadmium secondary cell which comprises a positive plate, a negative plate, alkaline electrolysis liquid, a compartment sheet, a steel housing and a combination capping, wherein the negative electrode includes CdO active compound, conductive agent, binding agent and addition agent, the conductive agent comprises at least one of Cd, Ni(OH)2, Ni, acetylene black, graphite powder, zinc powder, cobalt-zinc alloy powder, cobalt powder, CoO, Co2O3, Co(OH)2 and Co(OH)3, the binding agent includes at least one selected from PTFE, CMC, MC, PVA, SBR, the addition agent is hydrogen storing alloy, whose proportion in the total negative electrode active material is between 1-30wt%.

Description

technical field [0001] The invention relates to a sealed alkaline nickel-cadmium secondary battery. Background technique [0002] Due to its superior performance in terms of price, cycle life, high rate discharge and high and low temperature resistance, sealed nickel-cadmium secondary batteries still occupy a large share in the market. The sealed nickel-cadmium secondary battery includes a casing and a battery cell inside the casing. The battery cell is composed of a nickel positive electrode, a cadmium negative electrode, an alkaline electrolyte, and a separator separating the nickel positive electrode and the cadmium negative electrode. The principle of "positive electrode limitation" is adopted to make the battery The internal "oxygen cycle" of the battery is realized during charging or overcharging, that is, the oxygen generated at the positive electrode in the later stage of battery charging can diffuse to the negative electrode and be reduced to hydroxide or water, so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/24H01M4/62H01M4/64H01M10/24
CPCY02E60/124Y02E60/10
Inventor 查全性喻敬贤张骥小倪天明
Owner WUHAN UNIV
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