Results 61 to 70 of about 5,206 (171)
Rare Metals, EarlyView.ABSTRACT Two‐dimensional (2D) nonlayered niobium nitrides have attracted considerable interest for electrochemical energy storage. However, the synthesis of these materials is hampered by their nonlayered crystal structures, which are characterized by strong three‐dimensional chemical bonding.
Rui Huo +7 more
wiley +1 more source
考虑配电网与电化学储能交互耦合关系的异常运行状态预警方法 [PDF]
全球能源互联网配电网稳定性直接关系到终端用户侧储能的运行质量。针对配电网异常运行场景下用户侧储能系统的安全问题，提出了一种热失控预警方法。该方法通过确立从配电网异常状态到用户侧储能的完整传导路径，识别了锂离子电池热失控的关键特征量，包括异常电流值/电压值和异常状态持续时长。进而建立了用户侧储能的状态演化模型，分析了这些特征量对储能安全运行状态的影响。仿真结果揭示了不同异常电气量变化对储能安全的具体影响，如异常电流值/电压值与储能异常温度的高正相关性，以及异常状态持续时长的强正相关性。基于此 ...
范培潇 +6 more
doaj +1 more source
The Synthesis and Electrochemical Performance of Manganese-Based Materials [PDF]
, 2015 锰氧化物储量丰富、价格低廉、环境友好，做超级电容器电极材料及锂离子 电池负极材料有高的理论比容量，近来成为研究热点之一。但锰氧化物存在电子 电导率低、离子导电性差的缺陷，其实际容量与理论容量差距较大。另外，在锂 离子电池中，基于转换反应的锰氧化物充放电过程存在较大的体积变化，容易造 成循环容量的衰减。纳米化与制备锰氧化物与碳材料的复合物是有效的改进方 法。本文通过回流法、溶剂热及分散煅烧的方法分别制备了Mn3O4与还原氧化 石墨烯(RGO)、MnO与RGO、MnO与石墨烯及MnO与其他碳材料的复合材料 ...
杨姗姗
core
In vitro culture, cryopreservation, and field reintroduction of the endangered Mingan thistle
Conservation Biology, EarlyView.Abstract Current plant conservation efforts are hindered by, for example, poor seed germination, low viability, and insufficient propagation and preservation technologies. To address these problems, we devised an approach to plant conservation that integrates conservation, preservation, and restoration (CPR), which uses advanced in vitro techniques. We
Mukund R. Shukla +4 more
wiley +1 more source
Gaoya dianqi, 2023 电池储能系统被认为是解决可再生能源的不确定性和不平衡性导致的功率不足和频率波动的有效途径。基于此，文中提出了一种基于电池的荷电状态SOC(state of charge)的电池储能系统混合控制策略。首先，文中将电池的SOC、调频和调峰需求划分为不同的区域，并对调频和调峰提出相应的控制策略，提出SOC自恢复控制策略。之后提出储能的混合控制策略，基于电池储能的SOC，将储能的调频与调峰功能与SOC自恢复策略相结合，实现储能对电力系统的优化。最后通过仿真分析验证该控制策略的合理性与应对可再生能源波动的能力。
李盈 +9 more
doaj
Policy &Internet, Volume 18, Issue 1, March 2026.ABSTRACT This article investigates how TikTok Shop reproduces the e‐commerce model of Douyin Shop against a backdrop of divergent regulatory challenges and geopolitical distrust. One of the strategic changes we observe in TikTok Shop is the shift of consumer goods suppliers from local merchants to China‐based sellers.
Shuaishuai Wang, Jing Meng, Yitong Li
wiley +1 more source
Dianci bileiqi, 2023 为降低高比例新能源配电网电压越限风险和线路潮流越限风险，本研究提出一种计及高比例新能源配电网电压风险的储能容量优化配置方法。该方法首先识别高比例新能源带来的电压越限风险和线路越限风险，并基于效用理论构建量化模型；接着建立风、光、荷的概率模型，确立储能运行控制策略，在考虑配储经济性条件下，建立以系统风险最小为目标的储能选址定容优化模型，最终通过算例确定储能最优安装位置和容量以及运行方式，结果表明储能多点分散接入能降低高比例新能源配电网风险值，验证了所提方法的可行性。
张科杰 +5 more
doaj
Functional Ecology, Volume 40, Issue 2, Page 534-552, February 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Non‐structural carbohydrates (NSC) are critical mediators of plant adaptation to fluctuating light environments. They are tightly coordinated with plant economic strategy, that is, leaf economics spectrum (LES) and root economics spectrum (RES).
Lulu Xie +6 more
wiley +1 more source
Modification of Lithium Rich Mn-based Layered Cathode Material for Lithium-ion Batteries [PDF]
, 2016 富锂层状锰基正极材料具有比容量高、低成本和良好的安全性能等特点，是下一代高容量锂离子二次电池关键材料之一。本论文主要从材料合成、晶格修饰和表面修饰方面出发，系统探讨它们对富锂层状锰基正极材料的电化学性能的影响，从而深入的理解电化学反应过程的机理和结构变化，尤其是对“电压降”现象的影响。具体内容如下： 1.
李冰
core
Modeling and simulation of PMSM control system based on SVPWM [PDF]
, 2008 The paper introduces the basic principle of space vector pulse width modulation simply and expatiates a method for implementing space vector pulse width modulation in detail based on MATLAB/SIMULINK, designs modeling and simulation of AC servo system ...
Guo, Y, Jin, J, Wang, Z, Zhan, Y, Zhu, J
core +1 more source