中山大学学报(自然科学版)
中山大學學報(自然科學版)
중산대학학보(자연과학판)
ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS SUNYATSENI
2007年
z1期
310-311
,共2页
苗鹤%林燕%李锐%高明霞%雷永泉%潘洪革
苗鶴%林燕%李銳%高明霞%雷永泉%潘洪革
묘학%림연%리예%고명하%뢰영천%반홍혁
贮氢合金%热处理%电化学性能
貯氫閤金%熱處理%電化學性能
저경합금%열처리%전화학성능
hydrogen storage alloys%annealing treatment%electrochemical properties
研究了热处理时间对贮氢电极合金La0.7Mg0.3Ni2.45Co0.75Mn0.1Al0.2的微结构与电化学性能的影响.XRD分析结果表明,所有合金均由(La, Mg)Ni3 与LaNi5两相构成,热处理并没有使该贮氢合金发生相变.电化学研究结果表明,随着热处理时间的延长,合金电极的最大放电容量与循环稳定性能均得到明显改善,而高倍率放电性能却逐渐恶化.
研究瞭熱處理時間對貯氫電極閤金La0.7Mg0.3Ni2.45Co0.75Mn0.1Al0.2的微結構與電化學性能的影響.XRD分析結果錶明,所有閤金均由(La, Mg)Ni3 與LaNi5兩相構成,熱處理併沒有使該貯氫閤金髮生相變.電化學研究結果錶明,隨著熱處理時間的延長,閤金電極的最大放電容量與循環穩定性能均得到明顯改善,而高倍率放電性能卻逐漸噁化.
연구료열처리시간대저경전겁합금La0.7Mg0.3Ni2.45Co0.75Mn0.1Al0.2적미결구여전화학성능적영향.XRD분석결과표명,소유합금균유(La, Mg)Ni3 여LaNi5량상구성,열처리병몰유사해저경합금발생상변.전화학연구결과표명,수착열처리시간적연장,합금전겁적최대방전용량여순배은정성능균득도명현개선,이고배솔방전성능각축점악화.
The effects of the dwelling time of annealing treatment on the microstructures and the electrochemical properties of the La0.7Mg0.3Ni2.45Co0.75Mn0.1Al0.2 hydrogen storage alloy were studied systematically. The results of XRD showed that all of the alloys consisted mainly of two phases: the (La, Mg)Ni3 phase and the LaNi5 phase. Electrochemical studies showed that the maximum discharge capacity and the cyclic stability increased and the high rate dischargeability (HRD) of the alloy electrode decreased with increasing annealing time.
