TY - JOUR
T1 - Layered MgxV2O5·nH2O as Cathode Material for High Performance Aqueous Zinc Ion Batteries
AU - Ming, Fangwang
AU - Liang, Hanfeng
AU - Lei, Yongjiu
AU - Kandambeth, Sharath
AU - Eddaoudi, Mohamed
AU - Alshareef, Husam N.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Fangwang Ming and Hanfeng Liang contributed equally to this work. Research reported in this publication is supported by King Abdullah University of Science and Technology (KAUST).
PY - 2018/9/28
Y1 - 2018/9/28
N2 - The performance of chemically intercalated V2O5 was found to strongly depend on the interlayer spacing, which is related to the radius of hydrated metal ion, which can be readily tuned by using different intercalated metals. Herein, we report a layered Mg-intercalated V2O5 as cathode material for aqueous ZIBs. The large radius of hydrated Mg2+ (~4.3 Å, compared to 3.8 Å of commonly used Li+) results in an interlayer spacing as large as 13.4 Å (against 11.07 Å for Li+ intercalated V2O5), which allows efficient Zn2+ (de)insertion. As a result, the obtained porous Mg0.34V2O5·0.84H2O nanobelts work in a wide potential window of 0.1-1.8V versus Zn2+/Zn, and can deliver high capacities of 353 and 264 mA h g-1 at current densities of 100 and 1000 mA g-1, respectively, along with long-term durability. Furthermore, the reversible Zn2+ (de)intercalation reaction mechanism is confirmed by multiple characterizations methods.
AB - The performance of chemically intercalated V2O5 was found to strongly depend on the interlayer spacing, which is related to the radius of hydrated metal ion, which can be readily tuned by using different intercalated metals. Herein, we report a layered Mg-intercalated V2O5 as cathode material for aqueous ZIBs. The large radius of hydrated Mg2+ (~4.3 Å, compared to 3.8 Å of commonly used Li+) results in an interlayer spacing as large as 13.4 Å (against 11.07 Å for Li+ intercalated V2O5), which allows efficient Zn2+ (de)insertion. As a result, the obtained porous Mg0.34V2O5·0.84H2O nanobelts work in a wide potential window of 0.1-1.8V versus Zn2+/Zn, and can deliver high capacities of 353 and 264 mA h g-1 at current densities of 100 and 1000 mA g-1, respectively, along with long-term durability. Furthermore, the reversible Zn2+ (de)intercalation reaction mechanism is confirmed by multiple characterizations methods.
UR - http://hdl.handle.net/10754/628887
UR - https://pubs.acs.org/doi/10.1021/acsenergylett.8b01423
UR - http://www.scopus.com/inward/record.url?scp=85054660693&partnerID=8YFLogxK
U2 - 10.1021/acsenergylett.8b01423
DO - 10.1021/acsenergylett.8b01423
M3 - Article
SN - 2380-8195
VL - 3
SP - 2602
EP - 2609
JO - ACS Energy Letters
JF - ACS Energy Letters
IS - 10
ER -