| 查看: 957 | 回复: 0 | |||
[交流]
Nikhil Koratkar nanoletter新作:垂直生长ReS2在锂硫电池中的应用
|
|
Vertically Oriented Arrays of ReS2 Nanosheets for Electrochemical Energy Storage and Electrocatalysis 摘要：Transition-metal dichalcogenide (TMD) nanolayers show potential as high-performance catalysts in energy conversion and storage devices. Synthetic TMDs produced by chemical-vapor deposition (CVD) methods tend to grow parallel to the growth substrate. Here, we show that with the right precursors and appropriate tuning of the CVD growth conditions, ReS2 nanosheets can be made to orient perpendicular to the growth substrate. This accomplishes two important objectives; first, it drastically increases the wetted or exposed surface area of the ReS2 sheets, and second, it exposes the sharp edges and corners of the ReS2 sheets. We show that these structural features of the vertically grown ReS2 sheets can be exploited to significantly improve their performance as polysulfide immobilizers and electrochemical catalysts in lithium–sulfur (Li–S) batteries and in hydrogen evolution reactions (HER). After 300 cycles, the specific capacity of the Li–S battery with vertical ReS2 catalyst is retained above 750 mA h g–1, with only ～0.063% capacity decay per cycle, much better than the baseline battery (without ReS2), which shows ～0.184% capacity decay per cycle under the same test conditions. As a HER catalyst, the vertical ReS2 provides very small onset overpotential (<100 mV) and an exceptional exchange-current density (～67.6 μA/cm2), which is vastly superior to the baseline electrode without ReS2. Picture1 :  Picture 2:  Picture 3: 论文链接：http://pubs.acs.org/doi/full/10.1021/acs.nanolett.6b01180 |
回复此楼» 猜你喜欢
上海应用技术大学招生调剂研究生
已经有8人回复
-
南京晓庄学院绿色能源材料团队招生
已经有0人回复
-
金属材料论文润色/翻译怎么收费?
已经有241人回复
-
南京晓庄学院绿色能源材料团队招生
已经有0人回复
-
北方工业大学储能技术-02电化学储能与氢能方向招收2026级二次调剂学生
已经有0人回复
-
求助WO3.cif文件 对应PDF卡片 43-1035，单斜晶系 , P21/n 。
已经有2人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有3人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有3人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有2人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有0人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有0人回复
