On the practical use of new CMD for high-performance dry batteries
| Project/Area Number |
59850130
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
無機工業化学
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| Research Institution | Nagaoka University of Technology |
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Principal Investigator |
TANABE Isao 長岡技術科学大学, 工, 教授 (80132661)
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| Project Period (FY) |
1984 – 1985
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| Project Status |
Completed (Fiscal Year 1985)
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| Budget Amount *help |
¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 1985: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1984: ¥2,900,000 (Direct Cost: ¥2,900,000)
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| Keywords | Chemical Manganese Dioxide / Manganese Carbonate / Dry Battery / Dibcharge Charccter |
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| Research Abstract |
Synthesis of new CMD from Mn-ore and its performance were investigated and results were as follows. 1. Mn-ore powder(-40mesh) has extracted as Mn <SO_4> by <SO_2> gas( <SO_2> 6%up) directly in water and its Mn yield was 92[95%.
2. Dense Mn <CO_3> was obtained by parallel charge method of 1M/1MnSO and <(NH_4)_2> <CO_3> at under 60゜C. Tap-density of the obtained Mn <CO_3> was 2.7g/ml.
3. Mn <CO_3> was treated in pressurized wet- <O_2> (total p. 7atm. <PH_2> O latm) at 320゜C for 3hrs. Mn <O_2> content of oxidized products was 90[92%. This new CMD showed excellent discharge preformance for Zn <Cl_2> and <NH_4> Cl type dry cells. Specialty of the new CMD is voltage recovery behavior in Zn <Cl_2> type dry cell.
4. Densified CMD by chlorate reaction showed good performance for alkaline type and Li-Mn <O_2> type cells. Adapted degrees of densification were 20% up (in HN <O_3> acidic) for alkaline type cell and 18%(in <H_2> <SO_4> acidic) for Li-Mn <O_2> type cell.
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Report
(1 results)
Research Products
(6 results)
