【摘 要】
：
利用液态金属电池储能是近年来发展起来的一种新型电化学储能技术,具有成本低、寿命长等优点,在大型储能领域具有广阔的应用前景.传统单一组分的正极材料面临熔点高、电压低
【机 构】
：
先进输电技术国家重点实验室(全球能源互联网有限公司),北京102211;金属材料强度国家重点实验室(西安交通大学),西安710049
论文部分内容阅读
利用液态金属电池储能是近年来发展起来的一种新型电化学储能技术,具有成本低、寿命长等优点,在大型储能领域具有广阔的应用前景.传统单一组分的正极材料面临熔点高、电压低等问题,而合金材料则给液态金属电池正极材料提供了新的可能.本文通过分子动力学方法计算多种适用于液态金属电池正极材料的金属和合金材料(Bi、Sb、Te、Sn、Pb),经过多尺度计算模拟,首先找到了 30种二元合金和三元合金,分析这些合金材料的形成能,发现均为负值,理论上说明这30种二元合金和三元合金均可以稳定存在.而后,筛选出具有较低熔点(＜500℃)的正极合金,分别是SnSb、HgTl、InBi、PbSb、HgIn、InTe、GaSb、AlSb、CdSnSb2、ZnSb.进一步分析合金正极材料的态密度,选出7种离子传输能力较强的正极合金:PbSb、HgIn、CdSnSb2、ZnSnSb2、InTe、SnSb和SnTl4Te3,模拟计算其以锂为负极情况下的开路电压,结果表明,以SnSb为正极材料时,开路电压可达0.65 V.
其他文献
In the present study,we offer an in-depth analysis over the microstructure,thickness and product composition of the interfacial reaction layer generated upon CB
为考察热处理工艺对AFA耐热钢组织和力学性能的影响,本文利用光学显微镜、扫描电镜、X射线衍射等技术,研究了新型含铝奥氏体耐热钢(AFA)在不同保温温度和冷却方式下的组织演
In recent years,oxygen storage materials (OSMs) have been widely used in many fields.It would be particularly important for researchers to design high-oxygen-up
The oxidation behavior and mechanism of as-received and 30 ％ cold-rolled alumina-forming austenitic (AFA) steel were investigated in dry air at 700 ℃.The result
研究了添加Zr元素的重力铸造AlSi7Mg0.4合金的微观组织和力学性能.结果 表明,在含Zr的铸态合金中生成了(Al,Si)3(Zr,Ti)和π-Fe相,Zr的添加使合金的晶粒尺寸减小;经过T6热处
The sensitivity of ethanol sensor is of paramount importance in a variety of areas,including chemical production with ethanol,alcohol testing for driving safety
Recently,the γ'-strengthened superalloys are of great interests in high temperature applications due to their excellent high temperature strength which is deri
Pathogens pose a serious challenge to environmental sanitation and a threat to public health.The frequent use of chemicals for sterilization in recent years has
In medium/high entropy alloys,their mechanical properties are strongly dependent on the chemical-elemental composition.Thus,searching for optimum elemental comp
About 3 mm thick five-element equimolar high-entropy alloy (HEA) FeCoCrNiMn was successfully deposited by solid-state cold spraying (CS).The high-temperature ox