Tactics to optimize conversion-type metal fluoride/sulfide/oxide cathodes toward advanced lithium metal batteries

Understanding the Highly Reversible Potassium Storage of Hollow Ternary (Bi-Sb)2S3@N-C Nanocube

“…Furthermore, the standard electrode potential of K/K + is even more negative than that of Li/Li + in carbonate ester solvent such as ethylene carbonate and diethyl carbonate, resulting in wider-operation voltage and higherpower density when compared with lithium ion batteries and sodium ion batteries. 1 So far, significant efforts and considerable progress have been made in PIBs. Nevertheless, the main obstacles of sluggish reaction kinetics induced by the large radius of potassium ions are still challenging.…”

SnOxS2−x/GNS nanocomposites for reversible and high-capacity lithium-ion batteries

“…32 Because of the full reversibility of its Li + storage reactions, the initial coulombic efficiency of the SnOS/GNS composite can reach 73%, which is one of the highest records in the tin-based anode materials, as we know. 4,8,10,18,35,[37][38][39][40][41][42][43] The second discharge and charge cycles almost maintain the reversible capacity of 1238 mA h g −1 (discharge) and 1168 mA h g −1 (discharge), and there is only a small loss of capacity (about 140 mA h g −1 ) in its rst 20 cycles. The overlapped discharge-charge curves of the 20 th and 40 th cycles indicate its good cycling stability with a reversible capacity of ∼1070 mA h g −1 .…”

“…12 Some studies also reported that nano-SnO 2 and SnS 2 anode materials could make the related electrochemical reactions (reaction (1)) partially reversible. [4][5][6][7][8] In recent years, the unique structure of graphene nanosheets (GNSs) holds great potential because of its high surface area, excellent electronic conductivity, and high Li + storage density. GNS composites can strongly improve the capacity, rate, and stability of active materials.…”

“…To deal with this problem, tin compounds, especially oxides or sulfides, could be a better choice because the in situ formed Li 2 O or Li 2 S in the Li + insertion process and the related oxides or sulfides can wrap Sn and buffer the volume change in the lithium storage process. 4–10 The electrochemical reaction could be described as follows:SnX 2 + 4Li + + 4e − → 2Li 2 X + Sn (X = O, S)Sn + 4.4Li + + 4.4e − ↔ Li 4.4 Sn…”

Bimetallic selenide Cu4Mo6Se8 nanosheet arrays grown on a carbon skeleton via MOF-derived with enhanced electrochemical kinetics for high-performance sodium-ion batteries

“…With the continuous growth of energy demand and increasingly serious environmental pollution, large-scale electrochemical energy storage (EES) systems are developing at an increasing rate. [1][2][3][4][5][6][7] The commercialization of lithium-ion batteries (LIBs) has dramatically changed people's daily life. 8 However, considering the limited lithium resources and high cost, exploring applicable energy storage systems to replace LIBs is a necessity.…”