期刊
ACS NANO
卷 14, 期 8, 页码 9626-9636出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.0c00101
关键词
(NH4)(2)Mo3S13; sodium/potassium-ion batteries; highly reversible anode; low-temperature batteries; storage mechanism
类别
资金
- China Postdoctoral Science Foundation [2018T110822, 2017M610495]
- Natural Science Foundation of Hunan Province [2019JJ50061, 2019JJ30002]
- Research Projects of Degree and Graduate Education Teaching Reformation in Hunan Province [JG2018B031]
- National Natural Science Foundation of China [51804106, 51574117, 51772082]
Sodium-ion batteries (SIBS) and potassium-ion batteries (PIBs) have attracted much attention owing to the inexpensive Na/K metal and satisfactory performance. Currently, there are still difficulties in research anode materials that can insert/extract Na/K ions quickly and stably. Herein, the sulfur-rich (NH4)(2)Mo3S13 is proposed as the anode for SIBs/PIBs and is obtained by a hydrothermal method. The sulfur-rich (NH4)(2)Mo3S13 with a three-dimensional structure shows a high capacity and long lifespans for Na+ (at 10 A (g-1) the capacity of 165.2 mAh g(-1) after 1100 cycles) and K+ (120.7 mAh g(-1) at 1 A g(-1) retained after 500 cycles) storage. In addition, the bfa (NH4)(2)Mo3S13 electrode exhibits excellent electrochemical performance at low temperatures (0 degrees C). The mechanism of Na+ storage in (NH4)(2)Mo3S13 can be innovatively revealed through the combined use of electrochemical kinetic analysis and a series of ex situ characterization tests. It is believed that the present work identifies (NH4)(2)Mo3S13 as a promising anode for the SIBs/PIBs and will be of broad interest in research on engineering sulfur-rich transition metal sulfide and on energy storage devices.
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