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A Calcium‐Ion Hybrid Energy Storage Device with High Capacity and Long Cycling Life under Room Temperature
Author(s) -
Wu Nanzhong,
Yao Wenjiao,
Song Xiaohe,
Zhang Ge,
Chen Bingjie,
Yang Jinhu,
Tang Yongbing
Publication year - 2019
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201803865
Subject(s) - materials science , energy storage , electrolyte , battery (electricity) , lithium (medication) , ion , capacitor , electrode , nanotechnology , chemical engineering , optoelectronics , voltage , electrical engineering , power (physics) , thermodynamics , chemistry , physics , engineering , endocrinology , medicine , organic chemistry
Ca‐ion based devices are promising candidates for next‐generation energy storage with high performance and low cost, thanks to its multielectrons, superior kinetics, as well as abundance (2500 times lithium). Because of the lack of an appropriate combination of suitable electrode materials and electrolytes, it is unsuccessful to attain a satisfactory performance on complete Ca‐ion energy storage devices. Here, the multiion reaction strategy is defined to construct a complete Ca‐ion energy storage device and a capacitor–battery hybrid mechanism is deliberately adopted. Profiting from the elaborate design, it exhibits a high reversible capacity of 92 mAh g −1 , unmatchable rate capability, and a high capacity retention of 84% over 1000 cycles under room temperature, which is the best performance of reported Ca‐based energy storage devices.