Journal
CHEMNANOMAT
Volume 4, Issue 6, Pages 525-536Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cnma.201800078
Keywords
Ni-Zn batteries; cathode; Ni-based compound; nanostructure; rechargeable
Categories
Funding
- Guangdong Natural Science Funds for Distinguished Young Scholar [2014 A030306048]
- National Natural Science Foundation of China [21403306]
- Tip-top Scientic and Technical Innovative Youth Talents of Guangdong Special Support Program [2015TQ01C205]
- Pearl River Nova Program of Guangzhou [201610010080]
- 111 Project [B12015]
- Technology Planning Project of Guangdong Province [2015B090927007]
- Training Program of Scientific and Technological Innovation for Undergraduates [pdjh2017a0003]
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Aqueous rechargeable Ni-Zn battery with high capacity, low cost, and reliable safety has stimulated extensive interests for their promising applications in electric vehicles and portable electronics. The electrochemical properties of electrodes mostly determine the performances of the whole batteries. Currently, the capacities of the most developed cathodes are still far away from that of commercial Zn anode (820 mAh g(-1)), which is the major barrier for further boosting the energy density of Ni-Zn battery. In recent years, various Ni based materials like alpha-Ni(OH)(2), beta-Ni(OH)(2), NiO and NiCo2O4 have attracted considerable attention and been widely explored as cathode materials for Ni-Zn batteries. However, the poor conductivity and unsatisfactory cyclic stability of Ni-based materials severely limit their implementation as robust cathodes for Ni-Zn batteries with high energy density and durability. To address these issues, substantial efforts have been made and great processes have been achieved. Herein, we highlight recent advances on rationally structural and componential design of Ni based electrodes for Ni-Zn batteries. The relationships between structures and performances as well as the mechanisms are also discussed. Finally, we present perspectives on the research of next-generation electrodes with high electrochemical performances.
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