Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 47, Pages 44333-44341Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b16155
Keywords
MoSe2; potassium-ion batteries; aluminum-ion batteries; DFT calculations; wide operation temperature
Funding
- National Natural Science Foundation of China [51804173]
- Shandong Provincial Natural Science Foundation [ZR2018BB030]
- Qingdao Science and Technology Plan Applied Basic Research (Youth Special Project) [18-2-2-22-jch]
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Owing to their low cost and abundant reserves relative to conventional lithium-ion batteries (LIBs), potassium-ion batteries (PIBs), and aluminum-ion batteries (AIBs) have shown appealing potential for electrochemical energy storage, but progress so far has been limited by the lack of suitable electrode materials. In this work, we demonstrated a facile strategy to achieve highly reversible potassium and aluminum ions storage in strongly coupled nanosized MoSe2@carbon matrix, induced through an ion complexation strategy. We present a broad range of electrochemical characterization of the synthesized product that exhibits high specific capacities, good rate capability, and excellent cycling stability toward PIBs and AIBs. Through a series of systematic ex situ X-ray photoelectron spectroscopy (XPS) characterizations and density functional theory (DFT) calculations, the Al3+ intercalation mechanism of MoSe2-based AIBs are elucidated. Moreover, both the assembled PIBs and AIBs worked well when exposed to low and high temperatures within the range of -10 to 50 degrees C, showing promise for energy storage devices in harsh environment. The present study provides new insights into the exploration of MoSe2 as high-performance electrode materials for PIBs and AIBs.
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