Results 21 to 30 of about 302,862 (167)
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Enhancing the performance of phosphor materials for wide‐color‐gamut and high‐brightness phosphor‐converted light‐emitting diodes (pc‐LEDs) represents a critical materials challenge. Improving quantum efficiency (QE) under concentration quenching constraints and maintaining thermal stability remain primary objectives.
Yuhan Zhou +3 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Early detection of thermal runaway (TR) is essential for lithium‐ion battery (LIB) safety, as unchecked TR risks catastrophic failures in energy storage systems. Gas‐based sensing offers a faster and more direct approach by detecting decomposition products at the molecular level.
Tianshui Liang +9 more
wiley +1 more source
K2S2O8-O2耦合技术去除苯并杂环类有机物及聚合物再利用
Gongye shui chuli, 2023 采用过硫酸盐-氧气（K2S2O8-O2）耦合技术处理苯并噻唑（BTH）、苯并三唑（BT）、苯并咪唑（BM）、吲哚（ID） 4种苯并杂环混合物的模拟废水。160 ℃时，1.0 g/L的BTH、BT、BM、ID及混合污染物转化为球形聚合物的产率分别为66%、62%、57%、60%及68%，溶液中COD去除率分别为92%、90%、86%、91%及94%；进一步提高反应温度，几种污染物溶液的COD脱除率均达90%以上。利用密度泛函（DFT）理论对反应物分子结构、化学键长及其电负性进行了研究，结果表明 ...
周林碧, 郝围围, 王辉
doaj
四川大学学报. 自然科学版, 2005 适量的钒掺杂,大大增加了SrBi4Ti4O15(SBTi)铁电材料的剩余极化2Pr,并改善了材料的耐压性能.SBTi拉曼模的位置,基本不受V掺杂的影响,但对应Ti O6氧八面体的拉曼模在掺杂明显宽化,这与V5+取代进入Ti O6中的Ti4+后,材料局部无序性增大,应力增加有关.X射线光电子能谱表明,不同掺杂量样品的Bi4f和Ti2p的结合能未有明显变化,这与B位高价掺杂减少氧空位的特殊机制有关.材料的2Pr增加,是高价阳离子掺杂导致材料中氧空位浓度的减少,局部无序性的增加共同作用的结果.
朱骏, 何军辉, 陈小兵
doaj
Dianci bileiqi, 2022 SnO2压敏电阻作为一种新型压敏陶瓷，由于其良好的非线性和热传导特性而得到关注。本研究利用扫描电子显微镜成像、电压-电流测量、电容-电压测量和X射线衍射等方法，分析了给定含量的Y2O3和不同浓度Pr2O3的掺杂对SnO2·CoO·Ta2O5·Cr2O3系列压敏电阻微观结构和电气性能的影响。研究发现，微量掺杂的Pr2O3不仅可以有效改善压敏电阻的电压梯度，且在抑制泄漏电流方面有着显著效果，但是随着Pr2O3的加入，样品的残余孔隙率增加，样品致密性变差。在本研究中，当Y2O3为0.05 （摩尔分数 ...
康加爽 +5 more
doaj
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Low conductivity and poor oxygen reduction reaction (ORR) catalytic activity limit the bifunctional catalytic performance of layered double hydroxide (LDH) in zinc–air batteries. In this work, an efficient bifunctional electrocatalyst was prepared by loading nitrogen and phosphorus co‐doped carbon quantum dots (NPCQDs) onto a cationic‐vacancy ...
Wenhao Tang +4 more
wiley +1 more source
四川大学学报. 自然科学版, 2005 用固相烧结法制备了不同Nd掺杂量的SrBi4-xNdxTi4O15(SBNT-x,x=0.00～1.00)铁电陶瓷.X射线衍射谱显示Nd掺杂未改变SrBi4Ti4O15(SBTi)的晶体结构.铁电测量表明,适量的Nd掺杂使SBTi的剩余极化(2Pr)显著增加.当x=0.18时,2Pr达到极大值,为25.8μC/cm2,和未掺杂相比,增长约56%.样品的矫顽场在x=0.00到0.18之间几乎不变,而在更大掺杂量下,随掺杂量的增加而逐步减小.掺杂引起材料中点缺陷浓度降低和晶格畸变减小 ...
王伟, 朱骏, 毛翔宇, 陈小兵
doaj
Nitrogen Anchoring Effect Triggering Improved Reversible Hydrogen Storage of Mg(BH4)2
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT This research uncovered the influence of nitrogen‐doped MXene Ti3CN on the reversible hydrogen storage properties of Mg(BH4)2. The Mg(BH4)2‐20Ti3CN composite began releasing hydrogen at a temperature of 80°C. In addition, the composite discharged over 8.8 wt% hydrogen at a comparatively lower temperature of 270°C, whereas the pure Mg(BH4)2 ...
Zhen‐Xuan Ma +7 more
wiley +1 more source
四川大学学报. 自然科学版, 1995 报道了用改进的化学共沉淀法制备掺Ｃａ，Ｓｍ，Ｍｎ钛酸铅超细粉末技术．制得的粉料粒径小于０．０５μｍ．其掺杂元素均能定量地准确掺入．
杨昆山 +3 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Sodium‐ion capacitors (SICs) offer high energy and power density with long cycle life, but developing kinetically compatible electrodes remains challenging. This work developed a simple and sustainable strategy to synthesize homologous carbon electrodes from the inner shells of durian husks (ISDH) for high‐performance SICs.
De‐Bing Yan +7 more
wiley +1 more source