Results 31 to 40 of about 14,490 (205)
Rare Metals, EarlyView.ABSTRACT The polyanionic compound Na3V2(PO4)3 (NVP) has emerged as a competitive cathode material for sodium‐ion batteries (SIBs), owing to its high‐voltage redox activity (3.4 V vs. the Na+/Na reference couple) and NASICON‐type framework that enables superior ionic conductivity.
Xiaolei Wu +5 more
wiley +1 more source
The Analysis of Impact on Per Capita Real GDP of Provinces in Western Region by Western Region Development Program [PDF]
, 2016 自改革开放以来，我国经济发展取得了巨大成就，但同时地区间经济发展水平的差距也越来越大，为了促进我国区域经济协调发展，缩小东西部地区发展差距，2000年国家正式实施了“西部大开发”战略。在政策实施15年积累了足够多数据的基础上，本文首先分析了“西部大开发”对西部省份人均实际GDP增长率的影响，在此基础上分析了“西部大开发”对我国经济收敛性的影响，从这相互联系的两方面对“西部大开发”的政策效果进行了评价，结论是“西部大开发”基本实现了其战略目标。 在政策绩效评价广泛应用的“反事实”方法中 ...
孙天柱
core
Summary of Desert Photovoltaic Power Transmission Technology [PDF]
To achieve carbon peaking and carbon neutrality goals and improve energy efficiency, new energy plays a major role in China strategic deployment. However, as centralized photovoltaic is located in desert areas, photovoltaic power transmission has become ...
CHU Shuai +5 more
core +1 more source
Rare Metals, EarlyView.ABSTRACT CoP has become a research hotspot for supercapacitor electrode materials because of its considerable theoretical capacitance and metalloid nature, but its commercial application remains hampered by structural instability and sluggish ion kinetics.
Gaoliang Wang +8 more
wiley +1 more source
A Research on the Financial Performance and Policy of Pinggao Electric and China Xidian Electric [PDF]
, 2016 美国次贷危机、全球金融危机之后，全球经济恢复缓慢；而中国经济的增长速率也从高速增长变为中低速运行。市场需求增长放缓，行业竞争加剧，电气设备制造业企业经营惨淡，处境艰难。随着国家电网公司推出直流超高压、特高压输电工程及智能电网建设工程，电力设备制造业迎来了机遇与挑战。对于国有企业，如何从亏损困境中走出，平高电气与中国西电给出了不同的答案。 本文搜集了平高电气与中国西电2010～2014年的财务数据，采用财务分析方法，通过对财务报表的结构分析、财务指标的历史分析、财务指标的因素分解分析 ...
朱鸿展
core
Rare Metals, EarlyView.ABSTRACT Developing low‐energy‐input electrocatalytic systems for efficient hydrogen production is crucial for advancing sustainable energy technologies. The overall hydrazine splitting (OHzS) has emerged as a promising strategy to reduce the overall energy consumption by replacing the sluggish oxygen evolution reaction.
Haozhou Chen +13 more
wiley +1 more source
Gaoya dianqi, 2017 为了提高特高压电容式电压互感器的瞬态性能,分析其在较宽频域内的分压特性,以某公司生产的1 000 kV特高压电容分压器为实验对象,进行了特高压电容分压器阻抗的测量,建立了特高压电容分压器的宽频等效电路模型。首先,测量特高压电容分压器的阻抗;其次,基于测量得到的数据结合矢量匹配法和电路综合理论,建立了特高压电容分压器的宽频等效电路模型,并利用模式搜索算法对等效电路进行无源修正;最后,利用所建立的模型,分析特高压电容分压器在不同频率下的分压特性,为合理设置均压装置以及改善特高压的制造工艺提供理论依据。
王平, 张广勇, 李慧奇, 李璿
doaj
Study and Design of V2G system based on Grid-connected PV Power Generation [PDF]
, 2016 随着分布式可再生能源渗透率的不断提高，光伏等可再生能源接入电网的方式更加多样。同时近年来电动汽车飞速发展，解决充电问题已成为当务之急。在减少大规模充电对电网产生影响的同时，将电动汽车作为储能单元参与电网的调峰调频有利于电网的安全经济运行。本文研究基于光伏发电的V2G系统，旨在增加新能源消纳并促进电动汽车的清洁化和低碳化。系统的最大创新点在于实现了光伏发电并网、电动汽车充电与V2G服务的分时复用。 针对家庭单相并网选取了双向两级式的电路拓扑，不仅结构简单而且易于控制。对双向全桥电路和Buck ...
孙纯鹏
core
Rare Metals, EarlyView.ABSTRACT Dielectric ceramics are popular for energy storage materials because of their rapid charge–discharge characteristics, whereas their low energy density and efficiency hinder their miniaturization and integration. In this work, the energy storage performance is significantly enhanced through introducing Al2O3 and TiO2 into the 0.425(Bi0.5Na0.5 ...
Qiansi Zhang +9 more
wiley +1 more source
Schedule Management in Smart Energy Meter Launch Project [PDF]
, 2016 质量、进度、成本、安全是企业生产经营过程当中的主要管理对象，而在新生产项目建设投产过程中，尤以进度管理为重，本文选取研究的三相智能电能表投产项目就是以项目进度为主要管理对象。 本文选用R公司三相智能电能表投产项目作为本论文研究的对象，回顾了项目进度管理的方法、项目计划制定与项目进度控制的原理，阐述了智能电能表投产项目的特点、意义及其特殊性要求，设计了三相智能电能表投产项目的进度计划，介绍了项目实施过程中遇到的问题与解决方法。 论文分析了计量新产品投产过程中项目化管理方法的应用与作用 ...
吴章坤
core