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WS2–Graphite Dual-Ion Batteries
Nano Letters ( IF 9.6 ) Pub Date : 2018-10-04 00:00:00 , DOI: 10.1021/acs.nanolett.8b03227 Sebastiano Bellani 1 , Faxing Wang 2 , Gianluca Longoni 1 , Leyla Najafi 1 , Reinier Oropesa-Nuñez 3 , Antonio E. Del Rio Castillo 1 , Mirko Prato 4 , Xiaodong Zhuang 2 , Vittorio Pellegrini 1, 3 , Xinliang Feng 2 , Francesco Bonaccorso 1, 3
Nano Letters ( IF 9.6 ) Pub Date : 2018-10-04 00:00:00 , DOI: 10.1021/acs.nanolett.8b03227 Sebastiano Bellani 1 , Faxing Wang 2 , Gianluca Longoni 1 , Leyla Najafi 1 , Reinier Oropesa-Nuñez 3 , Antonio E. Del Rio Castillo 1 , Mirko Prato 4 , Xiaodong Zhuang 2 , Vittorio Pellegrini 1, 3 , Xinliang Feng 2 , Francesco Bonaccorso 1, 3
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A novel WS2–graphite dual-ion battery (DIB) is developed by combining a conventional graphite cathode and a high-capacity few-layer WS2-flake anode. The WS2 flakes are produced by exploiting wet-jet milling (WJM) exfoliation, which allows large-scale and free-material loss production (i.e., volume up to 8 L h−1 at concentration of 10 g L−1 and exfoliation yield of 100%) of few-layer WS2 flakes in dispersion. The WS2 anodes enable DIBs, based on hexafluorophosphate (PF6–) and lithium (Li+) ions, to achieve charge-specific capacities of 457, 438, 421, 403, 295, and 169 mAh g–1 at current rates of 0.1, 0.2, 0.3, 0.4, 0.8, and 1.0 A g–1, respectively, outperforming conventional DIBs. The WS2-based DIBs operate in the 0 to 4 V cell voltage range, thus extending the operating voltage window of conventional WS2-based Li-ion batteries (LIBs). These results demonstrate a new route toward the exploitation of WS2, and possibly other transition-metal dichalcogenides, for the development of next-generation energy-storage devices.
中文翻译：
WS 2 –石墨双离子电池
通过将常规的石墨阴极和高容量的多层WS 2片状阳极结合在一起，开发出一种新颖的WS 2石墨双离子电池（DIB）。的WS 2薄片通过利用湿式喷射研磨（WJM）剥落，这允许大型和自由材料损失生产（即，体积达8 L H产生-1以10克L-浓度-1和剥落产量（100％）的几层WS 2薄片分散。WS 2阳极使基于六氟磷酸（PF 6 –）和锂（Li +）离子的DIB能够实现457、438、421、403、295和169 mAh g –1的电荷比容量。电流速率分别为0.1、0.2、0.3、0.4、0.8和1.0 A g –1，优于传统的DIB。基于WS 2的DIB在0至4 V电池电压范围内工作，从而扩展了常规基于WS 2的锂离子电池（LIB）的工作电压范围。这些结果证明了为开发下一代储能设备而开发WS 2以及可能的其他过渡金属二卤化物的新途径。
更新日期：2018-10-04
中文翻译：
WS 2 –石墨双离子电池
通过将常规的石墨阴极和高容量的多层WS 2片状阳极结合在一起，开发出一种新颖的WS 2石墨双离子电池（DIB）。的WS 2薄片通过利用湿式喷射研磨（WJM）剥落，这允许大型和自由材料损失生产（即，体积达8 L H产生-1以10克L-浓度-1和剥落产量（100％）的几层WS 2薄片分散。WS 2阳极使基于六氟磷酸（PF 6 –）和锂（Li +）离子的DIB能够实现457、438、421、403、295和169 mAh g –1的电荷比容量。电流速率分别为0.1、0.2、0.3、0.4、0.8和1.0 A g –1，优于传统的DIB。基于WS 2的DIB在0至4 V电池电压范围内工作，从而扩展了常规基于WS 2的锂离子电池（LIB）的工作电压范围。这些结果证明了为开发下一代储能设备而开发WS 2以及可能的其他过渡金属二卤化物的新途径。
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