TY - JOUR
T1 - Scalable production of hydrogen evolution corrosion resistant Zn-Al alloy anode for electrolytic MnO2/Zn batteries
AU - Sun, Jifei
AU - Zheng, Xinhua
AU - Li, Ke
AU - Ma, Gang
AU - Dai, Ting
AU - Ban, Boyuan
AU - Yuan, Yuan
AU - Wang, Mingming
AU - Chuai, Mingyan
AU - Xu, Yan
AU - Liu, Zaichun
AU - Jiang, Taoli
AU - Zhu, Zhengxin
AU - Chen, Jian
AU - Hu, Hanlin
AU - Chen, Wei
N1 - Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2023/1
Y1 - 2023/1
N2 - Electrolytic MnO2/Zn battery has attracted significant attention for large-scale energy storage due to its advantages of high energy density and low cost. However, the acidic electrolyte used to maintain the Mn2+/MnO2 chemistry causes severe and irreversible hydrogen evolution corrosion (HEC) on the Zn anode. Herein, we present a scalable, metallurgical Al alloying approach to mitigate the HEC of Zn and prolong the battery's cycle life. Through various in situ and ex situ characterizations, it is demonstrated that the HEC on Zn-Al alloy electrode is effectively inhibited in the acidic electrolyte with and without the electric field effect. The outstanding anti-HEC capability of the Zn-Al alloy anode enables the electrolytic MnO2/Zn-Al battery with a high discharge voltage of more than 1.9 V at 1 C, a more stable cycle performance, and an enhanced cycle life comparing with the MnO2/Zn battery. Meanwhile, the experimental and COMSOL simulation results also reveal that the preferential but with slow corrosion speed of Al matrix in Zn-Al alloy is the key factor to improve the anti-HEC capability. This work exhibits the practicality of alloying strategy to produce scalable and robust Zn alloy anodes for the electrolytic MnO2/Zn battery in the large-scale energy storage field.
AB - Electrolytic MnO2/Zn battery has attracted significant attention for large-scale energy storage due to its advantages of high energy density and low cost. However, the acidic electrolyte used to maintain the Mn2+/MnO2 chemistry causes severe and irreversible hydrogen evolution corrosion (HEC) on the Zn anode. Herein, we present a scalable, metallurgical Al alloying approach to mitigate the HEC of Zn and prolong the battery's cycle life. Through various in situ and ex situ characterizations, it is demonstrated that the HEC on Zn-Al alloy electrode is effectively inhibited in the acidic electrolyte with and without the electric field effect. The outstanding anti-HEC capability of the Zn-Al alloy anode enables the electrolytic MnO2/Zn-Al battery with a high discharge voltage of more than 1.9 V at 1 C, a more stable cycle performance, and an enhanced cycle life comparing with the MnO2/Zn battery. Meanwhile, the experimental and COMSOL simulation results also reveal that the preferential but with slow corrosion speed of Al matrix in Zn-Al alloy is the key factor to improve the anti-HEC capability. This work exhibits the practicality of alloying strategy to produce scalable and robust Zn alloy anodes for the electrolytic MnO2/Zn battery in the large-scale energy storage field.
KW - Electrolytic MnO/Zn battery
KW - Hydrogen evolution corrosion
KW - Large-scale energy storage
KW - Large-scale fabrication
KW - Zn-Al alloy
UR - http://www.scopus.com/inward/record.url?scp=85141762041&partnerID=8YFLogxK
U2 - 10.1016/j.ensm.2022.10.059
DO - 10.1016/j.ensm.2022.10.059
M3 - 文章
AN - SCOPUS:85141762041
SN - 2405-8297
VL - 54
SP - 570
EP - 578
JO - Energy Storage Materials
JF - Energy Storage Materials
ER -
