Results 11 to 20 of about 31,765 (178)
针对燃煤电厂循环水排水高盐处理需求,为解决无定形碳电极亲水性差、活性位点不足的缺陷,本研究以酚醛树脂为原料,经碳化造孔制备无定形碳基材,通过氧化-活化-磺化接枝改性工艺制备改性无定形碳基复合电极。通过系统的结构表征及电化学性能测试,结合电吸附试验,探究改性对材料微观结构、电化学性能的影响及电吸附作用机理。结果表明,改性后材料表面成功引入羧基等含氧官能团,亲水性显著提升,虽伴随部分孔结构损失,但有效改善离子传输效率、强化双电层电容特性,在10 A/g下比电容达844.65 F/g,倍率性能优异 ...
蔡晨 +5 more
doaj +4 more sources
增大电极比表面积是提高电容去离子效率的方法之一.通过研究活性炭负载量对电极比表面积的影响,探讨了一种提升炭电极电容去离子性能的有效方法.实验结果表明,增加活性炭负载量可有效提升电极比表面积,电极电容最高可达0.56 F/cm2,表现出较好的电容去离子性能.持续增加活性物质虽对电极内电阻影响较小,但不能进一步提高电极吸附表面,比电容急剧下降.优化电极孔隙结构是提升活性炭电极电吸附性能的有效方法.
肖书彬, 徐克, 阮国岭
doaj +2 more sources
可再生能源发电具有间歇性、随机性和不可控性,为绿色能源的充分利用带来了挑战。虚拟电厂数据中心具有高能耗特性,因此成为可再生能源中间歇性(非调度性)电力的高效吸纳与调控手段。基于此,提出了一种通过时间嵌词编码的长短期记忆(long short-term memory,LSTM)网络对虚拟电厂“源荷”双侧状态进行预测的方法。该方法可实现15分钟级的“电力短缺”主动预警,为容器的暂停和备份创造充分的缓冲时间窗口,结合容器技术实现数据中心的动态能耗管理,从而提升了虚拟电厂数据中心应对电力供需失衡的鲁棒性 ...
陈峻, 宁思衡
doaj +1 more source
ABSTRACT Epidermal bioelectronics is a transformative technology for continuous health monitoring and human‐computer interaction. However, the mechanical and physiological mismatch at the skin–device interface limits its long‐term application. Electrospun nanofiber membranes (ENMs), with their unique three‐dimensional hierarchical porous network and ...
Jiahua Ni +7 more
wiley +1 more source
ABSTRACT Electrosynthesis of hydrogen peroxide (H2O2) via the two‐electron oxygen reduction reaction (2e−ORR) offers a sustainable and decentralized alternative to the anthraquinone process. However, conventional solo‐active‐site catalysts are intrinsically limited by scaling relationships, imposing a trade‐off between activity and selectivity.
Yiqi Ding +12 more
wiley +1 more source
随着能源转型的深入,风光等可再生能源大规模替代传统能源发电并网,电力系统结构发生很大的变化,导致电网惯性变低、稳定性变弱。另外,风力发电功率的波动性将导致电力系统调度困难。因此,在风电并网系统中增加构网型储能系统,并给出构网型储能系统的控制策略,进而围绕风电并网的稳定性以及电压跌落故障,对构网型储能系统增加前后风电并网波形进行对比分析,验证了构网型储能系统可以大大提高风电并网的稳定性,并且对电压跌落故障有很好的抑制作用。
杨本星, 王伟, 杨明轩, 柳涛
doaj
ABSTRACT Rationally selection of precursor additives during perovskite crystallization is essential for obtaining high‐quality films and achieving high‐performance perovskite solar cells (PSCs). However, the discovery and optimization of effective additives still rely heavily on time‐consuming and costly trial‐and‐error experiments.
Zhimin Feng +12 more
wiley +1 more source
Metal‐Filamentary Memristor‐Based Artificial Neurons for Embodied Neuromorphic Intelligence
ABSTRACT Embodied neuromorphic intelligence represents a transformative paradigm for next‐generation intelligent systems, with broad implications for robotics, autonomous driving, intelligent manufacturing, and smart infrastructures. Neuromorphic chips enable bioinspired computing with sparse, heterogeneous representations and spatiotemporal dynamics ...
Tianci Huang, Zuqing Yuan, Qilin Hua
wiley +1 more source
由于绝缘需要,高压监测设备的电源无法由低压侧直接供给,因此,研究经高压侧取能的供电技术十分必要,而电源供能的稳定性与长期性是对其性能提出的要求。以电流互感器电磁感应取能为基础,引入C8051F021单片机构建电源控制电路,从提高电源自适应能力的角度尝试解决上述问题。该电路的取能部分、过流保护部分及后备电源部分均能由单片机通过对采样点信号进行分析而得到有效控制,可分别解决一次电流宽范围变化下的可靠取能问题,即大电流下的过流保护问题,以及欠电流下的供能问题。这使供电电源能够有效应对不稳定的电流状况,具备长期、
肖波 +5 more
doaj
Unveiling Entropy‐Driven Hard‐Tough Synergy Mechanisms in High‐Entropy Carbonitride Ceramics
ABSTRACT High‐entropy ceramics manifested promise for extreme environments, yet their phase stability and mechanical synergy mechanisms remain elusive. Herein, entropy‐difference carbonitrides, including (TaTiV)CN, (TaTiVNb)CN, and (TaTiVNbHf)CN, were designed and consolidated via spark plasma sintering.
Long Zhao +6 more
wiley +1 more source

