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[求助]
畢業(yè)論文翻譯，急，求助，萬(wàn)分感謝，題目與摘要
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題目：Superhigh capacity and rate capability of high-level nitrogen-doped graphene sheets as anode materials for lithium-ion batteries 摘要：A new facile approach is proposed to synthesize nitrogen-doped graphene sheets with the nitrogen-doping level as high as 7.04 at.% by thermal annealing pristine graphene sheets and low-cost industrial material melamine. The high-level nitrogen-doped graphene sheets exhibit a superhigh initial reversible capacity of 1123 mAh/g at a current density of 50 mA/g. More significantly, even at an extremely high current density of 20 A/g highly stable capacity of about 241 mAh/g could still be obtained. Such an electrochemical performance is superior to those previously reported nitrogen-doped graphene sheets.The excellent electrochemical performance can be attributed to the two-dimensional structure, disor-dered surface morphology, high nitrogen-doping level, and the existence of pyridinic nitrogen atoms. The results indicate that the high-level nitrogen-doped graphene sheets could be a promising anode material for high-performance lithium-ion batteries. |
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迅疾之風(fēng)
銅蟲(chóng) (小有名氣)
- 翻譯EPI: 1
- 應(yīng)助: 4 (幼兒園)
- 金幣: 312.2
- 帖子: 257
- 在線: 92.5小時(shí)
- 蟲(chóng)號(hào): 2139161
- 注冊(cè): 2012-11-21
- 性別: GG
- 專(zhuān)業(yè): 金屬功能材料
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
羅雷: 金幣+15, 翻譯EPI+1, ★★★★★最佳答案, 謝謝 2013-05-19 08:01:13
羅雷: 金幣+15, 翻譯EPI+1, ★★★★★最佳答案, 謝謝 2013-05-19 08:01:13
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超高的容量和速度的高質(zhì)量氮摻雜石墨烯作為鋰離子電池陽(yáng)極材料 提出了一個(gè)新的簡(jiǎn)便的方法由退火后的原始石墨烯薄片和低成本的工業(yè)材料三聚氰胺合成氮摻雜石墨烯薄片，氮摻雜量高達(dá)7.04%。高質(zhì)量氮摻雜石墨烯薄片在電流密度50 mA / g具有超高的初始可逆容量1123 mAh / g。更重要的是,即使在一個(gè)非常高的電流密度 20A/ g高依然擁有約241 mAh / g的容量。這樣的電化學(xué)性能是優(yōu)于之前報(bào)道的氮摻雜石墨烯薄片。優(yōu)秀的電化學(xué)性能來(lái)至于其二維結(jié)構(gòu)、混亂的表面形態(tài)、高氮摻雜水平和存在的pyridinic氮原子。結(jié)果表明,高質(zhì)量氮摻雜石墨烯薄片層會(huì)是一個(gè)有前途的高性能鋰離子電池陽(yáng)極材料。（那個(gè)單詞不懂） |
2樓2013-05-16 17:49:13
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