A Calcium‐Ion Hybrid Energy Storage Device with High Capacity and Long Cycling Life under Room Temperature. Issue 16 (10th February 2019)

• Record Type: Journal Article
• Authors: Wu, Nanzhong; Yao, Wenjiao; Song, Xiaohe; Zhang, Ge; Chen, Bingjie; Yang, Jinhu; Tang, Yongbing
• Is Part Of: Advanced energy materials. Volume 9:Issue 16(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-02-10
• Subjects: battery‐capacitor hybrid devices -- calcium‐ion -- energy storage -- long cycling life; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201803865
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract: 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. Abstract : A Ca‐ion hybrid energy storage device (Ca‐HSC) with capacitor component cathode and battery component anode is developed in this work. The Ca‐HSC achieves a reversible capacity of 92 mAh g −1 and excellent cycling stability with capacity retention of 84% after 1000 cycles at a high current rate of 0.1A g −1, suggesting its potential application for high‐performance room‐temperature energy storage devices.