TY - JOUR
T1 - Conversion-Type Nonmetal Elemental Tellurium Anode with High Utilization for Mild/Alkaline Zinc Batteries
AU - Chen, Ze
AU - Li, Chuan
AU - Yang, Qi
AU - Wang, Donghong
AU - Li, Xinliang
AU - Huang, Zhaodong
AU - Liang, Guojin
AU - Chen, Ao
AU - Zhi, Chunyi
N1 - Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/12/23
Y1 - 2021/12/23
N2 - Zinc ion batteries (ZIBs), generally established on an excessive metallic Zn anode and aqueous electrolytes, suffer from severe dendrites and gassing issues at Zn side, resulting in poor cycling life. Substituting Zn metal anode with non-Zn ones is a promising strategy for solving these problems, whereas this is still restricted by the limited anode alternatives. Herein, by replacing metal Zn with chalcogen element tellurium (Te), a conversion-type Te-based ZIB is reported that can work in both mild and alkaline electrolytes. As expected, the as-assembled mild Te/MnO2 and alkaline Te/Ni(OH)2 cells deliver remarkable capacities up to 106 and 161 mAh g−1anode+cathode, respectively, with a high utilization of anode (50.1% for the Te/MnO2 and 38.9% for the Te/Ni(OH)2), which surpass all ZIBs. Ultralong cycling life (over 75% capacity retention after 5000 cycles) is achieved in the two systems, benefiting from the stable conversion mechanisms (mild: Te to ZnTe2 to ZnTe; alkaline: ZnTe to Te to TeO2) with thoroughly eliminated dendrites and gassing. Moreover, high gravimetric energy density of ZIBs is also achieved, which are 176.3 Wh kg−1anode+cathdoe (Te/Ni(OH)2) and 81 Wh Kg−1anode+cathode (Te/MnO2), respectively. This work sheds light on the development of advanced conversion-type anode for high-performance batteries with superior stability.
AB - Zinc ion batteries (ZIBs), generally established on an excessive metallic Zn anode and aqueous electrolytes, suffer from severe dendrites and gassing issues at Zn side, resulting in poor cycling life. Substituting Zn metal anode with non-Zn ones is a promising strategy for solving these problems, whereas this is still restricted by the limited anode alternatives. Herein, by replacing metal Zn with chalcogen element tellurium (Te), a conversion-type Te-based ZIB is reported that can work in both mild and alkaline electrolytes. As expected, the as-assembled mild Te/MnO2 and alkaline Te/Ni(OH)2 cells deliver remarkable capacities up to 106 and 161 mAh g−1anode+cathode, respectively, with a high utilization of anode (50.1% for the Te/MnO2 and 38.9% for the Te/Ni(OH)2), which surpass all ZIBs. Ultralong cycling life (over 75% capacity retention after 5000 cycles) is achieved in the two systems, benefiting from the stable conversion mechanisms (mild: Te to ZnTe2 to ZnTe; alkaline: ZnTe to Te to TeO2) with thoroughly eliminated dendrites and gassing. Moreover, high gravimetric energy density of ZIBs is also achieved, which are 176.3 Wh kg−1anode+cathdoe (Te/Ni(OH)2) and 81 Wh Kg−1anode+cathode (Te/MnO2), respectively. This work sheds light on the development of advanced conversion-type anode for high-performance batteries with superior stability.
KW - conversion mechanisms
KW - dendrite-free batteries
KW - hydrogen evolution reaction suppression
KW - tellurium anodes
KW - zinc ion batteries
UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000707318700001
UR - https://www.scopus.com/pages/publications/85116964761
U2 - 10.1002/adma.202105426
DO - 10.1002/adma.202105426
M3 - Journal Article
C2 - 34612536
SN - 0935-9648
VL - 33
JO - Advanced Materials
JF - Advanced Materials
IS - 51
M1 - 2105426
ER -
