【摘要】 通过熔铸、压延、退火等一系列工艺制作了新型Al-0.017Ga-0.885Mn-0.038Ca-0.048Cu(wt.%)阳极合金,并通过EIS、极化曲线分析研究了其在不同浓度NaOH溶液中的腐蚀行为和电化学性能。结果表明,随着NaOH浓度的增加,合金阳极的自腐蚀速率在逐渐增加,Al-0.017Ga-0.885Mn-0.038Ca-0.048Cu合金在4mol/L NaOH溶液中的腐蚀速率增长速度明显降低,放电电压在电流密度为120mA/cm~2下仍能维持在1V左右,阳极能量密度也最高,达6.056kW·h/kg,更适合不同电流密度下的连续恒流放电。合金的恒流放电和EIS结果与腐蚀特性吻合较好。更多还原

【Abstract】 A new type of Al-0.017Ga-0.885Mn-0.038Ca-0.048Cu(wt.%)anode alloy was fabricated through a series of processes including casting,calendering,and annealing.EIS and polarization curve analysis were conducted to study its corrosion behavior and electrochemical performance in different concentrations of NaOH solution.The results show that with the increase of NaOH concentration,the self-corrosion rate of the alloy anode is gradually increasing,and the corrosion rate of Al-0.017Ga-0.885Mn-0.038Ca-0.048Cu alloy in 4 mol/L NaOH solution is significantly reduced.The discharge voltage can still be maintained at about 1 Vat a current density of 120 mA/cm~2,and the anode energy density is also the highest,reaching 6.056 kW·h/kg,which is more suitable for continuous constant current discharge at different current densities.Moreover,the constant current discharge and EIS results of the alloy are in good agreement with the corrosion characteristics.更多还原