Open AccessDendrites issues and advances in Zn anode for aqueous rechargeable Zn‐based batteries
Author(s) -
Li Qing,
Zhao Yuwei,
Mo Funian,
Wang Donghong,
Yang Qi,
Huang Zhaodong,
Liang Guojin,
Chen Ao,
Zhi Chunyi
Publication year - 2020
Publication title -
ecomat
Language(s) - English
Resource type - Journals
ISSN - 2567-3173
DOI - 10.1002/eom2.12035
Subject(s) - anode , battery (electricity) , cathode , electrolyte , materials science , dendrite (mathematics) , passivation , nanotechnology , electronics , energy storage , computer science , energy density , aqueous solution , engineering physics , electrical engineering , power (physics) , chemistry , engineering , physics , electrode , geometry , mathematics , quantum mechanics , layer (electronics)
Rechargeable Zn‐based batteries (RZBs) have attracted much attention and been regarded as one of the most promising candidates for next‐generation energy storage featured with high safety, low costs, environmental friendliness, and satisfactory energy density. The aqueous electrolyte system exhibits great potential to power the future wearable electronics. Apart from the achievements of high capacity cathode and stable electrolyte, the anode suffers from problems of dendrite growth, hydrogen evolution, and passivation with limited attention. The dendrite formation strongly restricts the battery lifespan. Therefore, strategies focused on dendrite suppression are carefully categorized and summarized in this review, including crystallographic orientation manipulation, electric field control, ion flux regulation, and mechanical shield. Each strategy and the detailed approaches are critically dissected. Finally, remaining challenges are emphasized in this review, expecting to supply further research with potential directions to fulfill the high performance of the Zn anodes.