Results 11 to 20 of about 3,119 (159)
Bidirectional Interfacial Chemical Regulation Enables Durable Aqueous Zn‐I2 Batteries
ABSTRACT Aqueous Zn‐I2 batteries hold great promise for large‐scale energy storage, yet their practical deployment is hindered by coupled interfacial instabilities at both electrodes, where Zn‐anode parasitic reactions and cathodic polyiodide shuttle mutually aggravate each other.
Zimian Jia +8 more
wiley +1 more source
在pH10.0的Na2B2O7-NaOH缓冲溶液中,非离子乳化剂OP存在下,6-硝基-苯并噻唑重氮氨基偶氮苯(NBTDAA)能与锌发生显色反应,据此建立了测定微量锌的新的光度法。结果表明,在实验条件下,NBTDAA与Zn(Ⅱ)反应生成2∶1稳定络合物,其最大吸收波长为510nm,表观摩尔吸光系数为5.75×104L/(mol·cm)。锌含量在0 ̄0.6mg/L内符合比尔定律。该方法用于测定电镀废水中微量锌,结果与5-Br-DMPAP光度法相符,6次测定值的RSD<4%。
罗道成, 刘俊峰
doaj +2 more sources
ABSTRACT Non‐noble metal oxygen electrocatalysts are essential for low‐cost rechargeable metal‐air batteries and fuel cells, determining their energy conversion efficiency. However, such electrocatalysts are limited by inadequate bifunctional activity and stability toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).
Lixin Sun +14 more
wiley +1 more source
ABSTRACT Additive manufacturing of zinc‐magnesium (Zn‐Mg) alloys via laser powder bed fusion (LPBF) has gained significant recognition as a promising candidate for bone repair. However, the presence of coarse yet brittle eutectic phases in the fabricated Zn‐Mg alloys tends to induce premature stress concentration and resultant fracture during ...
Zhi Dong +10 more
wiley +1 more source
Este ensaio tem o objetivo de apresentar um fragmento da etnografia sobre o conhecimento naturalístico dos pescadores artesanais da Carrasqueira – pequeno povoado localizado na costa central portuguesa. O material etnográfico, produzido entre os anos de 2010 e 2011, expõe como os pescadores carrasqueiros denominam alguns dos seres que constituem a ...
openaire +1 more source
ABSTRACT Aqueous zinc batteries hold great promise for large‐scale energy storage, yet their practical application is hindered by dendrite growth and interfacial side reactions on the zinc anode. Inspired by the industrially mature chromate passivation technology, this work reports an in situ construction of a chromium‐rich passivation layer (Zn@Cr) on
Long Huang +9 more
wiley +1 more source
SE PUBLICAR É PRECISO, AVALIAR TAMBÉM É! [PDF]
O tema “revisão de artigos” é relevante e faz parte do cotidiano de todo pesquisador. Entretanto, a minha experiência como editor e revisor em periódicos brasileiros e internacionais torna evidente que o comprometimento dos pesquisadores na função de revisores, em geral, é muito menor do que quando estão na posição de autores.
openaire +2 more sources
通过分子前驱体Zn[Biedta]2·8H2O热分解得到Zn-Bi-O三元复合氧化物,采用XRD、漫反射光谱、FT-IR等方法探索灼烧时间对复合氧化物的结构和性质的影响。同时以甲基橙的光降解为模型研究了灼烧时间对复合物催化性能的影响。结果表明,灼烧时间对复合物物相、吸光度、催化效果等均存在影响。制备的复合物对甲基橙光降解均具有不同程度的催化能力,其中灼烧2 h所得复合物的催化效果最好,在中性环境中,对20 mg/L的甲基橙而言添加量2 g/L为最佳,光照3 h的褪色率达90%。
张鹏飞 +4 more
doaj +2 more sources
超高分子量的聚乙烯(UHWPE)锻件已经制成,采用了三种不同化合物,其性能试验表明了使用少量百分比的添加剂即能够改变试验结果。对另一种方法也作了研究,将树胶粉末放在微波(R-F)炉中加热,继而压制成型。在各种情况下,这种微波(R-F)加热技术能制得最佳的产品。
沈锌
doaj

