| 在充放电循环过程中Ni/MH电池正负极的结构和性能变化 |
| STRUCTURE AND PROPERTY CHANGES OF POSITIVE AND NEGATIVE ELECTRODES IN Ni/MH BATTERIES DURING CHARGE/DISCHARGE CYCLES |
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| 摘要: 本文对在连续进行充放电循环过程中Ni/MH电池的放电容量、中值电压与循环周期的关系以及电池正负极结构和性能的变化进行了研究。结果表明：电池在循环过程中正极活性物质基本构型未变化，而负极储氢合金表面逐渐生成了La(OH)3、Al(OH)3、LiMnO2，正负极活性物质随循环次数的增加不断发生粉化，这些都是导致Ni/MH电池放电性能下降的主要因素。 |
| 关键词: Ni/MH电池 储氢合金 活性物质 放电容量 中值电压 |
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| Abstract: Research work was focused on variations in discharge capacity and mean voltage of AAA-sized Ni/MH batteries with cycle number during continuous cycles, and the structure and property changes of positive and negative electrodes were also studied. Experimental results exhibit that, the crystal structure of active material in positive electrode is not changed; however, on the surface of hydrogen storage alloy in anode, La(OH)3, Al(OH)3 and LiMnO2 are formed. Active materials in both positive and negative electrodes are gradually pulverized. All these factors result in the performance degradation of Ni/MH batteries. |
| Keywords: Ni/MH batteries hydrogen storage alloys active materials discharge capacity mean voltage |
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| 阎杰,周震,李宇轩,宋德瑛,张允什.在充放电循环过程中Ni/MH电池正负极的结构和性能变化[J].无机化学学报,1998,14(1):74-78. |
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