CN101877404A - Nickel-metal hydride battery cathode alkali treatment method - Google Patents
Nickel-metal hydride battery cathode alkali treatment method Download PDFInfo
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- CN101877404A CN101877404A CN2009101361129A CN200910136112A CN101877404A CN 101877404 A CN101877404 A CN 101877404A CN 2009101361129 A CN2009101361129 A CN 2009101361129A CN 200910136112 A CN200910136112 A CN 200910136112A CN 101877404 A CN101877404 A CN 101877404A
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- nickel
- battery
- metal hydride
- treatment method
- alkali treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a nickel-metal hydride battery cathode alkali treatment method. Nickel-metal hydride battery cathode piece is placed into solution containing 30-40% of KOH to be soaked or heated and then is taken out and washed, so that no alkali liquor is residual on the cathode piece, and drying is carried out. The nickel-metal hydride battery prepared by the cathode piece subject to the alkali treatment method can reduce self discharge of battery, improve over charge resistance performance of battery and prolong cycle life of battery.
Description
Technical field
The present invention relates to a kind of processing method of nickel-hydrogen battery negative pole sheet, refer specifically to a kind of nickel-metal hydride battery cathode alkali treatment method.
Background technology
The performance of Ni-MH battery depends on negative plate, and the nickel-hydrogen battery negative pole processing method can make self-discharge of battery increase in the past, reduced the anti-over-charging performance of battery, reduced battery cycle life.
Summary of the invention
The object of the present invention is to provide a kind of nickel-metal hydride battery cathode alkali treatment method, the Ni-MH battery that the negative plate of handling with this method prepares has the reduction self-discharge of battery, improves the anti-over-charging performance of battery, improves battery cycle life.
In order to achieve the above object, the present invention is realized by following technical scheme.
A kind of nickel-metal hydride battery cathode alkali treatment method is characterized in that: the nickel-hydrogen battery negative pole sheet is put into contained 30～40% immersion of KOH solution or heating, adopt to wash after taking out to make negative plate noresidue alkali lye, dry up.
Described nickel-hydrogen battery negative pole sheet soak time in containing 30～40% KOH solution is 14～24h.
Described nickel-hydrogen battery negative pole sheet is in containing 30～40% KOH solution, and reply alkali lye is heated to 100～120 ℃, boils 20～30min.
Beneficial effect of the present invention is, has the reduction self-discharge of battery with the Ni-MH battery of the negative plate preparation of alkali treatment method of the present invention, improves the anti-over-charging performance of battery, improves battery cycle life.
Description of drawings
Fig. 1 is two kinds of battery cycle life correlation curve figure of alkali pretreatment of the present invention and common process preparation
Embodiment
Below the specific embodiment of the present invention is done to describe in further detail.
A kind of nickel-metal hydride battery cathode alkali treatment method provided by the invention, this method are to adopt the nickel-hydrogen battery negative pole sheet put into to contain 30～40% KOH solution and soak or heating, in the present embodiment, preferentially select for use and contain 35% KOH solution, and KOH is a potassium hydroxide.Make negative plate noresidue alkali lye with adopting to wash after the nickel-hydrogen battery negative pole sheet taking-up after immersion or the heating, dry up.The embodiment of the present invention's immersion or heating is as follows:
Nickel-hydrogen battery negative pole sheet of the present invention soak time in containing 30～40% KOH solution is 14～24h, and in the present embodiment, soak time is 19h, and h is hour.Soak the nickel-hydrogen battery negative pole sheet that takes out the back and adopt washing to make negative plate noresidue alkali lye, dry up.
Nickel-hydrogen battery negative pole sheet of the present invention is mode of heating in containing 30～40% KOH solution, and reply alkali lye is heated to 100-120 ℃, boils 20-30min.In the present embodiment, alkali lye is heated to 110 ℃, boils 25min, min is minute.The nickel-hydrogen battery negative pole sheet that take out the heating back adopts washing to make negative plate noresidue alkali lye, dries up.
Following tabulation is two kinds of battery charge conservation rate contrast tables of alkali pretreatment of the present invention and common process preparation:
Charged conservation rate: (go into heavily inspection in 45 ℃ * 7 days, get 4 batteries for every kind)
| Test event | Common process | Alkali pretreatment |
| Average charged conservation rate | ??79.30％ | ??83.47％ |
| The average charge internal resistance | 21.7 milliohm | 20.5 milliohm |
| Internal resistance behind the average high temperature | 21.7 milliohm | 20.5 milliohm |
| Deposit back voltage | ??1.284-1.288V | ??1.287-1.289V |
The results showed, leak gas (average: 133.8 minutes) no leakage during the common process over-charging of battery in 133,133,136,133 timesharing.Leak gas (average: 151.3 minutes) no leakage during the alkali pretreatment over-charging of battery in 145,170,139 timesharing.The gas leakage time lengthening is 17.5 minutes after the negative pole alkali treatment, can improve the over-charging of battery performance.
Two kinds of battery cycle life correlation curve figure of alkali pretreatment of the present invention as shown in Figure 1 and common process preparation, the present invention can improve battery cycle life.Concrete circulation contrast is listed as follows:
Claims (3)
1. a nickel-metal hydride battery cathode alkali treatment method is characterized in that: the nickel-hydrogen battery negative pole sheet is put into contained 30～40% immersion of KOH solution or heating, adopt to wash after taking out to make negative plate noresidue alkali lye, dry up.
2. nickel-metal hydride battery cathode alkali treatment method according to claim 1 is characterized in that: described nickel-hydrogen battery negative pole sheet soak time in containing 30～40% KOH solution is 14～24h.
3. nickel-metal hydride battery cathode alkali treatment method according to claim 1 is characterized in that: described nickel-hydrogen battery negative pole sheet is in containing 30～40% KOH solution, and reply alkali lye is heated to 100～120 ℃, boils 20～30min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101361129A CN101877404A (en) | 2009-04-30 | 2009-04-30 | Nickel-metal hydride battery cathode alkali treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101361129A CN101877404A (en) | 2009-04-30 | 2009-04-30 | Nickel-metal hydride battery cathode alkali treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101877404A true CN101877404A (en) | 2010-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101361129A Pending CN101877404A (en) | 2009-04-30 | 2009-04-30 | Nickel-metal hydride battery cathode alkali treatment method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5837317A (en) * | 1996-03-08 | 1998-11-17 | Matsushita Electric Industrial Co., Ltd. | Method of producing hydrogen storage alloy for battery |
| US5858571A (en) * | 1996-08-30 | 1999-01-12 | Shin-Etsu Chemical Co., Ltd. | Method of producing hydrogen absorbing alloy powder, and electrode using hydrogen absorbing alloy powder produced by said method |
| US6096144A (en) * | 1996-10-09 | 2000-08-01 | Shin-Etsu Chemical Co., Ltd. | Method of producing hydrogen absorbing alloy powder, and electrode using hydrogen absorbing alloy powder produced by said method |
| CN1286504A (en) * | 1999-08-31 | 2001-03-07 | 三洋电机株式会社 | Method for mfg. hydrogen-storage alloy for Ni-H alkaline accumulator |
-
2009
- 2009-04-30 CN CN2009101361129A patent/CN101877404A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5837317A (en) * | 1996-03-08 | 1998-11-17 | Matsushita Electric Industrial Co., Ltd. | Method of producing hydrogen storage alloy for battery |
| US5858571A (en) * | 1996-08-30 | 1999-01-12 | Shin-Etsu Chemical Co., Ltd. | Method of producing hydrogen absorbing alloy powder, and electrode using hydrogen absorbing alloy powder produced by said method |
| US6096144A (en) * | 1996-10-09 | 2000-08-01 | Shin-Etsu Chemical Co., Ltd. | Method of producing hydrogen absorbing alloy powder, and electrode using hydrogen absorbing alloy powder produced by said method |
| CN1286504A (en) * | 1999-08-31 | 2001-03-07 | 三洋电机株式会社 | Method for mfg. hydrogen-storage alloy for Ni-H alkaline accumulator |
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| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: LONG XIANG Free format text: FORMER OWNER: SHENZHEN BETTERPOWER BATTERY CO. LTD. Effective date: 20111017 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20111017 Address after: No. 2 golden tennis garden nine road 518000 in Guangdong Province, Shenzhen Futian Antoine Hill No. 5 Building 1 12B Applicant after: Long Xiang Address before: 518000, Guangdong, Shenzhen, Baoan District, Longhua Town, big wave Fu Village Industrial Building eleventh, the first floor Applicant before: Shenzhen BetterPower Battery Co., Ltd. |
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| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN BETTERPOWER BATTERY CO. LTD. Free format text: FORMER OWNER: LONG XIANG Effective date: 20120209 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20120209 Address after: 518000, Guangdong, Shenzhen, Baoan District, Longhua Town, big wave Fu Village Industrial Building eleventh, the first floor Applicant after: Shenzhen BetterPower Battery Co., Ltd. Address before: No. 2 golden tennis garden nine road 518000 in Guangdong Province, Shenzhen Futian Antoine Hill No. 5 Building 1 12B Applicant before: Long Xiang |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20101103 |