1, 3-dioxolane pretreatment to improve the interracial characteristics of a lithium anode

1,3-dioxolane （DOL） was originally used to pretreat a lithium metal electrode to improve its interracial characteristics. Electrochemical impedance spectra （EIS） measurements revealed that, after the DOL pretreatment, the lithium electrode had better interfacial stability during immersion in electrolyte and as repeated charge/discharge cycles. It was proved by SEM that the pretreated one has smoother morphology and less dendrite after repeated charge/discharge cycles. Consequentially, benefiting from the better interface characteristics of the lithium electrode.     

矿用蓄电池电机车充电系统的应用与维护

对蓄电池电机车在太原西峪煤矿使用中其充电系统的常见故障进行了分析,并提出了有效的处理方法。     

水系负极材料磷酸钛锂的研究进展

介绍了水系锂离子电池的结构、原理、特点、发展现状,以及负极材料磷酸钛锂的特点,综述了磷酸钛锂性能提升改性方法,包括特殊结构改性、晶格掺杂、引入高效导电剂等磷酸钛锂的研究进展阐释了和发展前景.     

Discharge properties of Mg–Sn–Y alloys as anodes for Mg-air batteries

Mg–Sn–Y alloys with different Sn contents (wt%) were assessed as anode candidates for Mg-air batteries. The relationship between microstructure (including the second phase, grain size, and texture) and discharge properties of the Mg–Sn–Y alloys was examined using mi-crostructure observation, electrochemical measurements, and galvanostatic discharge tests. The Mg–0.7Sn–1.4Y alloy had a high steady dis-charge voltage of 1.5225 V and a high anodic efficiency of 46.6% at 2.5 mA·cm?2. These good properties were related to its microstructure:small grain size of 3.8 μm, uniform distribution of small second phase particles of 0.6 μm, and a high content (vol%) of (11(2)0)/(10(1)0) orient-ated grains. The scanning Kelvin probe force microscopy (SKPFM) indicated that the Sn3Y5 and MgSnY phases were effective cathodes caus-ing micro-galvanic corrosion which promoted the dissolution of Mg matrix during the discharge process.     

改进PSO优化LSSVM的锂电池SOC估算模型

为提高锂电池荷电状态(SOC)的估算精度,提出一种改进粒子群优化(PSO)算法;对最小二乘支持向量机(LSSVM)的惩罚参数C和核函数参数σ进行寻优,建立基于改进PSO-LSSVM的锂电池SOC估算模型.对磷酸铁锂充放电实验数据进行仿真分析,结果表明:改进PSO-LSSVM模型的平均相对误差为2.96%,均方根误差为0.018,全局最大相对误差为4.79%;改进PSO-LSSVM模型明显提高锂电池SOC估算精度.     

中国太阳能利用技术发展概况及趋势

 在对中国太阳能的资源条件和产业特点分析的基础上,研究了太阳能光热、光伏发电的关键技术、核心装备和市场现状,指出了太阳能建筑一体化、多能互补等将是太阳能利用技术发展的未来趋势。     

钛酸锂电池城区电网储能系统经济性分析模型

储能系统全寿命周期内收益最大化为目标,考虑钛酸锂电池的循环寿命及放电深度对储能系统成本的影响等因素,建立储能系统收入模型和全寿命周期年均成本模型,在此基础上建立基于钛酸锂电池的城区电网储能系统经济性评价模型。算例分析结果表明,该模型能够实现城区电网中钛酸锂电池储能系统的成本控制,可在寿命周期内实现预期的经济效益。     

InP单晶表面势垒高度与表面态密度的光伏测算

应用变温光伏方法测定了Ｎ型低阻ＩｎＰ单晶的表面势垒高度，进而分析、计算了简并化的ＩｎＰ单晶表面态密度。     

铅酸蓄电池小电流工作的充电制度研究

根据铅酸蓄电池小电流放电工作状态的特点，提出在充电前，用大电流放电，然后再进入充电状态的小电流放电蓄电池的充电制度。实验结果表明，该种充电制，可改善极板活性物的结构，缩短充电时间，是一种可提高蓄电池容量，缩短充电时间，延长极板寿命的蓄电池充电制度。