Recent progress on heterostructure materials for next-generation sodium/potassium ion batteries

Enabling Reversible Reaction by Uniform Distribution of Heterogeneous Intermediates on Defect‐Rich SnSSe/C Layered Heterostructure for Ultralong‐Cycling Sodium Storage

“…Until now, numerous efforts have been exerted to explore the failure mechanism and settle the above problems. [9][10][11] Previously, the drawbacks of poor electrical conductivity and the redundancy path caused by limited active sites have been greatly improved by the development of carbon-coating and nanocrystallization technologies. [12][13][14][15] However, the challenge of poor reaction reversibility as well as fast capacity decay during continuous cycling is still unresolved.…”

Metal–organic frameworks and their derivatives for metal-ion (Li, Na, K and Zn) hybrid capacitors

“…In addition, there are more active sites in the heterostructure, thereby improving the reversible capacity of the electrode material. 241 Although heterostructures of pristine MOFs have been constructed, 242,243 heterostructure based on ZIF-L and provided a specific capacity of 361.93 C g −1 . 244 The full cell achieved an energy density of 20.4 Wh kg −1 at a power density of 9.85 kW kg −1 .…”

“…In addition, there are more active sites in the heterostructure, thereby improving the reversible capacity of the electrode material. 241 Although heterostructures of pristine MOFs have been constructed, 242,243 they are usually not directly used for EES due to their low conductivity and stability. An efficient way is to convert them into derivatives.…”

“…In addition, there are more active sites in the heterostructure, thereby improving the reversible capacity of the electrode material. 241 …”

Electrochemical performance of CoSe2 with mixed phases decorated with N-doped rGO in potassium-ion batteries

“…[7][8][9] On the one hand, the diffusion process of K + in the bulk phase of traditional electrode materials is difficult due to its large ion radius, and on the other hand, the large volume change associated with the K + insertion/ extraction of the electrode materials signicantly reduces the capacity of the battery. [10][11][12] In order to solve these technical problems, it is necessary to carry out reasonable structural and morphological design of key electrode materials for PIBs.…”