In:
Angewandte Chemie, Wiley, Vol. 135, No. 27 ( 2023-07-03)
Kurzfassung:
Sluggish storage kinetics and insufficient performance are the major challenges that restrict the transition metal dichalcogenides (TMDs) applied for zinc ion storage, especially at the extreme temperature conditions. Herein, a multiscale interface structure‐integrated modulation concept was presented, to unlock the omnidirectional storage kinetics‐enhanced porous VSe 2− x ⋅ n H 2 O host. Theory research indicated that the co‐modulation of H 2 O intercalation and selenium vacancy enables enhancing the interfacial zinc ion capture ability and decreasing the zinc ion diffusion barrier. Moreover, an interfacial adsorption‐intercalation pseudocapacitive storage mechanism was uncovered. Such cathode displayed remarkable storage performance at the wide temperature range (−40–60 °C) in aqueous and solid electrolytes. In particular, it can retain a high specific capacity of 173 mAh g −1 after 5000 cycles at 10 A g −1 , as well as a high energy density of 290 Wh kg −1 and a power density of 15.8 kW kg −1 at room temperature. Unexpectedly, a remarkably energy density of 465 Wh kg −1 and power density of 21.26 kW kg −1 at 60 °C also can be achieved, as well as 258 Wh kg −1 and 10.8 kW kg −1 at −20 °C. This work realizes a conceptual breakthrough for extending the interfacial storage limit of layered TMDs to construct all‐climate high‐performance Zn‐ion batteries.
Materialart:
Online-Ressource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v135.27
DOI:
10.1002/ange.202304400
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2023
ZDB Id:
505868-5
ZDB Id:
506609-8
ZDB Id:
514305-6
ZDB Id:
505872-7
ZDB Id:
1479266-7
ZDB Id:
505867-3
ZDB Id:
506259-7
