Y2000-62240-11 0014259电动车辆用的锌/空气燃料电池=A zinc/air fuel cellfor electric vehicles[会,英]/Cherepy,N.J.&Krueger,R.//The Fourteenth Annual Battery Confer-ence on Applications and Advances.—11~13(PC)Y2000-...Y2000-62240-11 0014259电动车辆用的锌/空气燃料电池=A zinc/air fuel cellfor electric vehicles[会,英]/Cherepy,N.J.&Krueger,R.//The Fourteenth Annual Battery Confer-ence on Applications and Advances.—11~13(PC)Y2000-62240-15 0014260压力对空气-重整产品质子交换膜(PEM)燃料电池系统的影响=The effect of pressure on an air-reformateproton exchange membrane(PEM)fuel cell system[会,英]/Simpson,S.F.& Ferran,J.//The FourteenthAnnual Battery Conference on Applications and Ad-vances.—15~17(PC)Y2000-62240-19 0014261混合电动车辆用的双极镍-金属氢化物电池=Bipolarnickel-metal hydride bartery for hybrid electric展开更多
通过粉末冶金烧结方法制备A2B7型含镁La_(1.9-x)Y_(x)Mg_(0.1)Ni_(6.48)Mn_(0.32)Al_(0.2)(x=0~1.8)和无镁La_(0.8)Y_(1.2)Ni_(6.48)Mn_(0.32)Al_(0.2)合金,研究了掺杂Mg条件下Y元素对合金物相组成、晶体结构和电化学性能的影响规律和...通过粉末冶金烧结方法制备A2B7型含镁La_(1.9-x)Y_(x)Mg_(0.1)Ni_(6.48)Mn_(0.32)Al_(0.2)(x=0~1.8)和无镁La_(0.8)Y_(1.2)Ni_(6.48)Mn_(0.32)Al_(0.2)合金,研究了掺杂Mg条件下Y元素对合金物相组成、晶体结构和电化学性能的影响规律和协同作用。结果表明,适量增加Y含量有助于含Mg合金形成2H-Ce_(2)Ni_(7)型相单相组织,Mg与Y原子优先占据2H-Ce_(2)Ni_(7)型主相中的[A_(2)B_(4)]结构单元,随Y含量x增加,2H-Ce_(2)Ni_(7)型主相晶胞参数a,c,V_(cell)及[A_(2)B_(4)]与[AB_(5)]单元结构的体积差ΔV_(d)均逐渐减小,但无镁及含镁x=1.8合金的2H-Ce_(2)Ni_(7)型主相具有相对较高的V_(cell)和ΔV_(d)值。合金的放氢PCT曲线特征和电化学性能与掺Mg,Y含量及ΔV_(d)关系密切,含镁合金的电化学性能优于无镁合金,其中含镁x=1.0~1.2合金具有较小的ΔV_(d)和最佳的电化学性能,该电极放电容量达到最大值375 m Ah·g^(-1),经100周充放电循环后的容量保持率S100为91%,放电电流密度为900 mA·g^(-1)时的高倍率放电性能HRD_(900)为80%。通过掺Mg和优化Y含量可明显改善La-Y-Ni系A_(2)B_(7)型合金的电化学性能。展开更多
文摘Y2000-62240-11 0014259电动车辆用的锌/空气燃料电池=A zinc/air fuel cellfor electric vehicles[会,英]/Cherepy,N.J.&Krueger,R.//The Fourteenth Annual Battery Confer-ence on Applications and Advances.—11~13(PC)Y2000-62240-15 0014260压力对空气-重整产品质子交换膜(PEM)燃料电池系统的影响=The effect of pressure on an air-reformateproton exchange membrane(PEM)fuel cell system[会,英]/Simpson,S.F.& Ferran,J.//The FourteenthAnnual Battery Conference on Applications and Ad-vances.—15~17(PC)Y2000-62240-19 0014261混合电动车辆用的双极镍-金属氢化物电池=Bipolarnickel-metal hydride bartery for hybrid electric
文摘通过粉末冶金烧结方法制备A2B7型含镁La_(1.9-x)Y_(x)Mg_(0.1)Ni_(6.48)Mn_(0.32)Al_(0.2)(x=0~1.8)和无镁La_(0.8)Y_(1.2)Ni_(6.48)Mn_(0.32)Al_(0.2)合金,研究了掺杂Mg条件下Y元素对合金物相组成、晶体结构和电化学性能的影响规律和协同作用。结果表明,适量增加Y含量有助于含Mg合金形成2H-Ce_(2)Ni_(7)型相单相组织,Mg与Y原子优先占据2H-Ce_(2)Ni_(7)型主相中的[A_(2)B_(4)]结构单元,随Y含量x增加,2H-Ce_(2)Ni_(7)型主相晶胞参数a,c,V_(cell)及[A_(2)B_(4)]与[AB_(5)]单元结构的体积差ΔV_(d)均逐渐减小,但无镁及含镁x=1.8合金的2H-Ce_(2)Ni_(7)型主相具有相对较高的V_(cell)和ΔV_(d)值。合金的放氢PCT曲线特征和电化学性能与掺Mg,Y含量及ΔV_(d)关系密切,含镁合金的电化学性能优于无镁合金,其中含镁x=1.0~1.2合金具有较小的ΔV_(d)和最佳的电化学性能,该电极放电容量达到最大值375 m Ah·g^(-1),经100周充放电循环后的容量保持率S100为91%,放电电流密度为900 mA·g^(-1)时的高倍率放电性能HRD_(900)为80%。通过掺Mg和优化Y含量可明显改善La-Y-Ni系A_(2)B_(7)型合金的电化学性能。