Integrated System of Solar Cells with Hierarchical NiCo2O4 Battery-Supercapacitor Hybrid Devices for Self-Driving Light-Emitting Diodes

An integrated system has been provided with a-Si/H solar cells as energy conversion device,NiCo2O4 battery-supercapacitor hybrid(BSH)as energy storage device,and light emitting diodes(LEDs)as energy utilization device.By designing three-dimensional hierarchical NiCo2O4 arrays as faradic electrode,with capacitive electrode of active carbon(AC),BSHs were assembled with energy density of 16.6 Wh kg-1,power density of 7285 W kg-1,long-term stability with 100% retention after 15,000 cycles,and rather low self-discharge.The NiCo2O4//AC BSH was charged to 1.6 V in 1 s by solar cells and acted as reliable sources for powering LEDs.The integrated system is rational for operation,having an overall efficiency of 8.1% with storage efficiency of 74.24%.The integrated system demonstrates a stable solar power conversion,outstanding energy storage behavior,and reliable light emitting.Our study offers a precious strategy to design a self-driven integrated system for highly efficient energy utilization.

Charging and self-discharging process of a quantum battery in composite environments

How to improve charging processes and suppress self-discharging processes has always been one of the key issues to achieve quantum batteries with high performance.Although a quantum battery is inevitably influenced by composite environments,this situation is still little understood,particularly regarding the influence of the memory effect of the composite environments and the coupling between composite environments.In this work,we investigate the effects of the composite environments,composed of two identical parts each containing a single cavity mode decaying to a reservoir,on the charging and self-discharging processes of a quantum battery.We show that increasing the two-mode coupling can effectively enhance the charging performance(i.e.,the stored energy,the charging power,ergotropy)and restrain the self-discharging process(i.e.,suppressing the process of dissipating the energy).However,different from the effect of two-mode coupling,we reveal that the memory effect of the reservoir in this composite environment is unfavorable to the charging process of the quantum battery,which is in sharp contrast to previous studies where the memory effect can significantly improve the charging performance of a quantum battery.Our results may benefit to the realization of quantum batteries with high performance under the actual complex environmental noise.

New Superionic Memory Devices Can Provide Clues to the Human Memory Structure and to Consciousness

Since the work of Penrose and Hameroff the possibility is discussed that the location of human memory and consciousness could be connected with tubulin microtubules. If one would use superionic nano-materials rolled up to microtubules with an electrolyte inside the formed channels mediating fast ionic exchange of protons respectively lithium ions, it seems to be possible to write into such materials whole image arrays (pictures) under the action of the complex electromagnetic spectrum that composes these images. The same material and architecture may be recommended for super-computers. Especially microtubules with a protofilament number of 13 are the most important to note. We connected such microtubules before with Fibonacci nets composed of 13 sub-cells that were helically rolled up to deliver suitable channels. Our recent Fibonacci analysis of Wadsley-Roth shear phases such as niobium tungsten oxide , exhibiting channels for ultra-fast lithium-ion diffusion, suggests to use these materials, besides super-battery main application, in form of nanorods or microtubules as effectively working superionic memory devices for computers that work ultra-fast with the complex effectiveness of human brains. Finally, we pose the question, whether dark matter, ever connected with ultrafast movement of ordinary matter, may be responsible for synchronization between interactions of human brains and consciousness.

Defect engineering of vanadium-based electrode materials for zinc ion battery

With the quick development of sustainable energy sources, aqueous zinc-ion batteries(AZIBs) have become a highly potential energy storage technology. It is a crucial step to construct desired electrode materials for improving the total performance of AZIBs. In recent years, considerable efforts have focused on the modification of vanadium-based cathode materials. In this review, we summarized defect engineering strategies of vanadium-based cathodes, including oxygen defects, cation vacancies and heterogeneous doping. Then, we discussed the effect of various defects on the electrochemical performance of electrode materials. Finally, we proposed the future challenges and development directions of V-based cathode materials.

二维MXene材料在太阳能电池和金属离子电池中的研究进展

MXene是一种新型二维材料,具有导电性高、表面官能团丰富、层间距和能带结构可调等特点,从而在新能源器件中拥有重要的研究价值。综述了MXene在太阳能电池和金属离子电池中应用的相关进展。在太阳能电池中,基于MXene高电导率、高透明度和功函数灵活可调的特点,讨论了其在电极和载流子传输层中的相关应用研究,并对MXene功函数调整的策略进行了总结。在金属离子电池中,基于MXene独特的二维层状结构、优异的力学性能和良好的导电性,讨论了MXene作为负极材料以及与碳纳米材料、金属氧化物和硅组成的复合材料对电化学性能的提升作用,并对MXene在正极材料、集流体以及隔膜中应用也进行了介绍。最后对MXene的下一步发展进行了展望。

矿用隔爆高压配电装置保护及控制电源设计

针对目前井下矿用隔爆高压配电装置保护及控制电源与供电系统同源存在的问题进行分析,提出了矿用独立电源供电的方式。对矿用隔爆高压配电装置保护及控制供电方式进行了分析与设计;对矿用隔爆高压配电装置用独立电源进行了设计;对矿用隔爆高压配电装置保护控制供电方式进行了研究,进一步对其进行了保护控制供电设计和电源切换装置设计。实现了保护及控制供电一用一备独立供电,保障供电系统的安全运行。目前该供电方式已经在潞安化工集团、晋能控股集团的大型矿井实现了井下应用。

进程可编辑的NCM前驱体洗分装置自动控制系统的设计与应用

NCM三元镍钴锰正极材料与钴酸锂正极材料相比,具有成本低、环保性好、容量高、循环性能好等优势,被称为是第三代锂离子电池正极材料。从三元湿料到干料过程中,主要包括过滤、陈化、洗涤、吹干、输送等工序。本文结合实际项目,介绍一种以板框压滤机为洗分工序的主体设备,配合阀站、仪表和控制系统,经由螺旋输送至干区直至包装,洗分工序涉及进浆、压榨、洗涤、吹干、输送等工序。该系统克服了传统洗分方式需要大量的现场人员干预,操作繁琐、指标不稳定的缺点,在实际应用中取得了良好的使用效果,实现了三元锂离子电池正极前驱体洗分系统的无人监管、自动控制,稳定了生产工艺流程,减少了现场人员工作量。

MXene在锌离子电池中的应用:研究进展与展望

可充电锌离子电池(ZIBs)以其低成本、固有安全性、高比能量和环保特性而在大规模储能领域中引起了极大的关注。尽管对ZIBs的正极、负极以及电解质的研究不断取得突破,ZIBs的实际性能仍难以达到实用化的要求,关键在于缺少先进材料的开发。MXene作为一种新型的二维材料,具有各种优异的特性包括丰富的原料、可定制的结构和独特的理化特性。二维(2D)MXene在ZIBs中的应用已经取得了重大进展。本文简要总结了用于ZIBs的MXene的多种合成路线、MXene的环境稳定性、形态和结构特征以及化学性质的进展;详细阐述了MXene基阴极、阳极和电解质/隔膜的最新发展,丰富的成果表明MXene材料具有实现高性能ZIBs的巨大潜力;归纳探讨了增强基于MXene的ZIBs性能的策略,包括离子插层调控、表面接枝修饰、杂原子掺杂、层间距拓宽等;最后,提出了基于MXene的ZIBs面临的挑战,展望了未来前景,旨在为开发实用化MXene基储能器件指明方向。

锂电池电芯电极自动装配系统的设计与实现

针对块状锂电池电芯电极装配时,电芯电极装配定位不准确、效率低、安全性不高等问题,研究锂电池电芯电极的装配要点和生产特征,设计一种电芯电极装配工艺流程和与之相匹配的执行机械结构,并结合现场总线网络通信技术,设计出电芯电极装配控制系统。从机械结构方面入手着重探讨电芯电极装配的电芯翻面供给结构、方位矫正与传输机构、多工位移送结构、电芯电极装配结构、绝缘纸粘贴结构和下料结构的六级联动装置,再基于西门子PLC搭建通信网络拓扑结构,设计出控制程序算法步骤实现零件自动上料、电芯电极的自动装配及自动移送和下料过程,并建立电芯电极装配全过程、可视化的在线管理系统。该电芯电极自动装配控制系统已经在锂电池生产企业中得到应用,经济效益明显。

一种适用于野外旅行的太阳能保温水杯设计

太阳能保温杯是一种利用太阳能进行加热和保温的便携式保温杯,特别适用于野外旅行等户外活动。该设计主要包含太阳能板、加热装置、保温杯体和锂电池4部分。太阳能板负责将太阳能转化为化学能,为电池提供能源。加热装置则利用电磁线圈产生热量,对保温杯内的水进行加热和保温。保温杯体采用高绝热材料制成,能有效阻止热量的散失,保证水温的稳定。此外,太阳能保温杯还具有便携性强、环保节能等优点。其不仅能满足野外旅行者的饮水需求,还能减少对环境的影响,是一种理想的户外用品。

Data Transmission with the Battery Utilization Maximization

With the growing popularity of 3G-powered devices, there are growing demands on energy-efficient data trans- mission strategies for various embedded systems. Different from the past work in energy-efficient real-time task scheduling, we explore strategies to maximize the amount of data transmitted by a 3G module under a given battery capacity. In particular, we present algorithms under different workload configurations with and without timing constraint considerations. Experiments were then conducted to verify the validity of the strategies and develop insights in energy-efficient data transmission.

Room-temperature reduction of NO2 in a Li-NO2 battery: a proof of concept

Although considerable effort has been devoted to purifying nitrogen oxides(NOx),it is still challenging to effectively reduce NOxat room temperature and ambient pressure without catalysts.In this study,as a proof-of-concept,we have for the first time demonstrated the room-temperature reduction of nitrogen dioxide(NO2)using a rechargeable lithium-nitrogen dioxide(Li-NO2)battery.The battery shows a capacity of 884 m Ah g-1 at 50 m A g-1(an actual energy density of 666 Wh kg-1)and a promising electrochemical Faraday efficiency(FE)of 67%.The unique properties of Li-NO2 rechargeable batteries not only provide a way to reduce and recycle NO2 but also highlight the potential of oxidative air pollutants as energy sources for next-generation electrochemical energy storage(EES)systems.

大容量防爆特殊型电源装置的设计研究

随着煤矿采煤设备的性能提升,煤炭产量日益增大,作为运输设备的煤矿用电机车装载量也需相应地提升,以保证煤矿井下的运输任务的需要。而运载物料能力更强的煤矿防爆蓄电池电机车则需要更强劲的动力系统。针对此需求设计了一种大容量防爆特殊型电源装置,来满足煤矿防爆蓄电池电机车使用需要。介绍了该装置的完整设计过程,并通过试验验证设计的可靠性,以及适应煤矿井下的各种要求和规定,保证煤矿防爆蓄电池电机车的强大运载能力和稳定安全运行,且延长了使用寿命,同时为防爆特殊型电源装置设计和改进提供了一定的理论指导。

柔性相变复合材料及其应用研究进展

柔性相变复合材料因其兼具优异的相变储能特性、耐受外力形变的柔性及与控温器件复合的可加工性,在智能材料开发中受到研究者的广泛关注。文中详述了通过聚合物网络共混、多孔骨架吸附及相变分子结构设计等3种支撑结构策略制备柔性相变复合材料的研究现状;总结了其在电池热管理器件、可穿戴电子器件和柔性传感器等领域的应用;最后,对柔性相变复合材料的研究重点和未来发展方向进行了展望。

便携式医疗设备电池剩余寿命预测算法研究

目的:为精准有效地预测便携式医疗设备的电池剩余寿命,提出一种基于反向传播(back propagation,BP)神经网络和麻雀搜索(sparrow search algorithm,SSA)算法的SSA-BP算法。方法:首先,通过BP神经网络的结构确定权值以及阈值的总数;其次,利用SSA算法优化初始权值和阈值,并赋值给BP神经网络;最后,通过对输入样本的训练获取预测的输出值。选取不同环境温度(4、24、43℃)下的18650型号锂电池数据进行测试,通过平均绝对误差、均方根误差、平均绝对百分比误差验证SSA-BP神经网络算法和BP神经网络算法对医疗设备电池剩余寿命的预测精度。结果:SSA-BP神经网络算法预测医疗设备电池剩余寿命的平均绝对误差、均方根误差、平均绝对百分比误差均低于BP神经网络算法。结论:SSA-BP神经网络算法能够精准有效地对电池的使用寿命进行预测,提高了电池在实际应用中的可靠性。

民用建筑中常用蓄电池室及其爆炸危险性定义的讨论

针对土建设计时是否将蓄电池室定义为“爆炸危险场所”这一存在争议的问题,梳理国内外标准、规范对铅酸蓄电池室、锂离子蓄电池室的相关条文规定并进行总结,结合实际案例分析蓄电池可能引起“爆炸”的原因,提出设计建议。

医学影像类设备动态数据采集平台的构建和应用研究

医学影像类设备是医院智慧化管理的重要组成部分,采集设备动态信息是医院智慧化管理实施的关键举措之一。该文对医学影像类设备动态数据的分类、采集方式进行了分析,并对设备动态数据的后期应用进行了研究。医疗设备的动态数据采集对于提高大型医疗设备的精细化、信息化、全生命周期管理具有重要意义。

UTV800-2型全地形车动力输出装置的设计

农用植保无人机在野外作业时存在载荷量小、电池使用时间短、路况不好的地段到达困难等问题。利用全地形车通过性强等优点,对UTV800-2型全地形车进行改造,以解决无人机电池充电、运输等问题。车中间增加一套动力输出装置,其动力输出端连接小型发电机,以使其为无人机电池充电;车后部增加一个运载无人机平台;车顶加装一个为无人机提供药液补给的箱体。设计计算动力输出装置输出轴的转速、扭矩、强度和三角带的传递功率等主要技术参数。结果表明,对UTV800-2型全地形车进行的改造满足设计要求,可为农用植保无人机的应用提供参考和技术支撑。

变电站蓄电池远程充放电装置的应用

针对变电站蓄电池管理的问题,引入远程充放电装置,研究了变电站蓄电池远程充放电装置的应用课题。变电站蓄电池组与直流母线的无缝连接在大功率二极管和直流接触器的并联作用下,实现了后备电源的无缝接入,从而确保了变电站蓄电池的运行效果。确定变电站蓄电池远程充放电状态,在整流模块与放电仪放电中获取远程充放电数据,实时监测蓄电池电压、电流、温度等参数,满足变电站蓄电池的管理需求。通过应用测试,验证了该装置的充放电控制效果更佳,可在实际生活中应用。

水电站蓄电池组多模块协同阻断技术研究

蓄电池作为水电站中常用的储能设备,能够为电力系统提供稳定的备用电源,并满足水电站在电网停电或负荷波动时的供电需求。铅酸蓄电池以其容量大、寿命长、成本相对较低、充放电效率高和维护成本低等优点而在水电站得到广泛应用。然而,由于频繁的充放电,铅酸蓄电池易发生老化,所以当蓄电池出现开路故障时,会对整个水电站的电源安全构成严重威胁。因此文章基于目前较成熟的开路续流装置设计了一种新型铅酸蓄电池组装置,用于解决水电站铅酸蓄电池组开路故障问题。