Journal Home > Volume 12 , Issue 9

Na-ion batteries (NIBs) have attracted significant attention owing to Na being an abundant resource that is uniformly distributed in the Earth's crust. Several 3d transition metal (TM) ions have been thoroughly investigated as charge compensators in single or multiple composition systems to enhance the electrochemical performance of cathodes for the practical applications. In this review, the composition-structure-property relationship of Ni-based cathodes has been reviewed as a design perspective for NIB's cathodes. The typical Ni-based cathode materials have been systematically summarized and comparatively analyzed, and it is demonstrated that Ni ions can be used to provide charge compensation. Moreover, Ni-based cathodes present high reversible capacity owing to the multi-electron redox reactions and suitable redox potential of Ni-ions redox. However, considering the abundance, cost, and hygroscopic properties of Ni element, the content of 0.15–0.35 per formula can be optimal for enhancing the performance of cathodes. Lastly, further perspectives on designing Ni-containing cathodes, including Ni-rich layered cathodes, have been discussed, which could promote the practical applications of NIBs for grid-scale energy storage in future.

Publication history
Copyright
Acknowledgements

Publication history

Received: 21 April 2019
Revised: 30 May 2019
Accepted: 31 May 2019
Published: 27 June 2019
Issue date: September 2019

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Acknowledgements

Acknowledgements

This work was supported by the National Key R & D Program of China (No. 2016YFB0901500), the National Natural Science Foundation of China (Nos. 51725206 and 51421002), the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDA21070500), Beijing Natural Science Fund-Haidian Original Innovation Joint Fund (No. L182056) and Beijing Municipal Science and Technology Commission (No. Z181100004718008). C. L. Z. also thanks to the State Scholarship Fund of China Scholarship Council (CSC).

Return