The trivalent chromium passivation film based on zincate plating obtained has compact structure with no obvious crack, and excellent anticorrosion performance. Different compositions are detected from the surface to inner film, the surface mainly contains Cr2O3-Cr3-ZnO compound, the inner (1030 nm to surface) composes of Cr2O3-ZnO-Zn.The forming process of passivation film possibly consists of four steps which are zinc dissolution, basic area appearance, gelatiniform film forming and converting to passivation film.

結(jié)果表明：鋅酸鹽鍍鋅層的三價(jià)鉻鈍化膜表面結(jié)構(gòu)致密、無(wú)明顯裂紋在线免费观看高清无码黄色视频，具有較好的耐腐蝕性能欧美人人干；這種鈍化膜表層與里層的組成不同，表層的組成為Cr2O3-Cr3-ZnO共混物一级做a爱黑人又粗又硬；里層(離表層10~30 nm處)的主要組成為Cr2O3-ZnO-Zn共混物国内乱伦自拍视频；鈍化膜的成膜過(guò)程可能包括鍍鋅層的溶解、堿性薄層的形成处女福利视频、膠狀膜的形成和膠狀膜轉(zhuǎn)化成鈍化膜4個(gè)步驟中文字幕一级黄片。

It can avoid the oversaturation of zincate solution, improve thecharge-discharge properties, inhibit dendrites formation, increase discharge capacity and extendcycle life of zinc electrode effectively.

泡沫黃銅集流體還具有導(dǎo)電性好、孔隙率高操人黄片视频免费、比表面大人人摸人人人草、重量輕、價(jià)格低廉国产日本黄色网站免费观看、無(wú)污染等優(yōu)點(diǎn)伊人狼人在线观看，是一種各項(xiàng)性能均衡，與銀集流體相近的鋅鎳電池負(fù)極新型集流體久久小视频黄色A片。

The addition ofIn significantly increases the overpotential of hydrogen evolution, decreases the corrosion currentdensity, increases Tafel slope 〓 and polarization, decreases Tafel slope 〓 and anode polarization,improves the reversibility of oxidation and reduction reaction, increases 〓 diffusion coefficientand avoids the oversaturation of zincate in electrolyte.

Zn-In合金電極主要是改善了鋅電極的抗腐蝕能力和氧化還原反應(yīng)的可逆性老版A片免费毛片视频观看，其在放電容量和循環(huán)壽命方面的改善效果并不明顯。

Zn-La alloys increase the overpotential ofhydrogen evolution, Tafel slope 〓 and polarization, decrease the corrosion current density, inhibitthe corrosion of zinc electrode in alkaline solution, decrease anode Tafel slope 〓, promotedischarge reaction of zinc electrode, have higher passivation current density, inhibit thepassivation of zinc electrode, avoid the oversaturation of zincate in electrolyte, greatly increase〓 diffusion coefficient, decrease Tafel slope 〓, polarization and the overpotential of deposition,inhibit the dendrites formation and improve the electrodepostion of Zn.

實(shí)驗(yàn)結(jié)果表明日韩在线精品色欲视频网站，Zn-La合金電極顯著改善了鋅電極的各項(xiàng)電化學(xué)性能：提高析氫過(guò)電位日韩A片一区二区视频免费看、析氫過(guò)程Tafel斜率〓和極化，減小腐蝕電流密度91论坛达人人妻论坛申请，抑制鋅電極在堿液中的腐蝕这里久久精彩视频；降低陽(yáng)極Tafel斜率〓，促進(jìn)了鋅電極的放電反應(yīng)国产精品丰满对白在线观看；具有較高的維鈍電流密度成年人在线观看的视频网页，抑制鋅電極的鈍化；有效避免了溶液中鋅酸鹽的過(guò)飽和現(xiàn)象：使〓的擴(kuò)散系數(shù)明顯增大：降低Zn沉積過(guò)程的Tafel斜率〓好大好粗好硬、極化和沉積過(guò)電位欧美黄色一区二区三区啊A片，明顯抑制鋅枝晶的生長(zhǎng)jizzjizz20，改善了鋅的電沉積性能。