金刚石表面化学镀预处理研究

针对金刚石表面化学镀预处理过程中的粗化、亲水处理以及敏化、活化等进行了深入研究。研制了一种强酸性和强氧化性溶液，对金刚石表面具有极好的亲水和粗化功效。提出了一种盐基性胶体钯配方，对金刚石表面具有良好的敏化活化效果。采用该预处理工艺。

用相转移法在金刚石表面沉积二氧化钛薄膜

用相转移法在金刚石表面沉积二氧化钛，探讨了沉积工艺条件．覆层在高温和真空条件下被还原为单质金属钛，Ｘ射线衍射分析表明金刚石表面有钛和碳化钛生成．考察了金刚石复合体中金刚石与基体金属之间的结合状况，结果表明沉积了钛涂层的金刚石与胎体金属之间的粘结强度得到明显改善．

包裹沉淀法合成锂离子二次电池正极材料LiMn_2O_4

用包裹沉淀法合成了具有尖晶石结构的可用作锂离子二次电池正极材料的锂锰氧（ＬｉＭｎ２Ｏ４） 化合物．对材料进行了Ｘ射线衍射、循环伏安、充放电等测试，实验结果表明，所合成的材料具有标准尖晶石结构和较好的电化学可逆性能，该材料在ＥＣＤＭＣ（１∶１，体积比） ＋１ ｍｏｌ／ＬＬｉＰＦ６ 电解液中表现出较优良的充放电性能，其放电容量达１２０ ｍＡｈ／ｇ．

Synthesis of cathode material LiMn_(2)O_(4)for lithium-ion batteries by high-energy ball milling

Using electrolytic manganese dioxide and Li 2CO 3 as starting materials, the precursor of LiMn 2O 4 as cathode materials for lithium ion batteries was obtained by high energy ball milling. The LiMn 2O 4 powder was synthesized by calcinating the as milling powder at 750 ℃ for 24 h. X ray diffraction, SEM, cyclic voltammograms and charge discharge were carried out to investigate the property of LiMn 2O 4 cathode materials. Results show that the synthesized material, which is of standard spinel structure, possesses high reversibility of electrochemistry. The capacity in EC DMC(1∶1)+1 mol/L LiPF 6 electrolyte during first discharge is determined to be 125 mA·h/g.[

春光失色下的唐朝边塞诗

本文对初唐、盛唐、中晚唐这三个时期边塞诗的不同特点进行分析,希望能够更深层次地理解诗歌背后的含义。