Practical conversion-type titanium telluride anodes for high-capacity long-lifespan rechargeable aqueous zinc batteries

Abstract

Rechargeable aqueous zinc batteries (RAZBs) with high safety and low cost offer great hopes for complementing lithium-ion batteries. However, realizing practical high-safety and long-lifespan RAZBs is held back by the...

Interfacial Coupling FeSe2/MoS2 Heterostructure as a Promising Cathode for Aluminum-Ion Batteries

“…The Nyquist plots of the heterostructured FeSe 2 /MoS 2 and the FeSe 2 /MoS 2 Mixture cathodes are depicted in Figure a to explore the reaction kinetics. The value of the electrochemical impedance depends on the interfacial charge/ion transfer process and the properties of the SEI layer. , The corresponding equivalent circuit diagram is shown in Figure S2. It is observed that the heterostructured FeSe 2 /MoS 2 cathode delivers a smaller resistance ( R ct = 60 Ω) than that of the FeSe 2 /MoS 2 mixture cathode ( R ct = 114 Ω), verifying the high charge/ion conductivity and stable interfacial contact between electrode and electrolyte. , The fast reaction kinetics of the heterostructured FeSe 2 /MoS 2 could be attributed to its strong charge-redistribution capability provided by the built-in electric field as shown in Figure b.…”

“…The value of the electrochemical impedance depends on the interfacial charge/ion transfer process and the properties of the SEI layer. 47,48 The corresponding equivalent circuit diagram is shown in Figure S2. It is observed that the heterostructured FeSe 2 /MoS 2 cathode delivers a smaller resistance (R ct = 60 Ω) than that of the FeSe 2 / MoS 2 mixture cathode (R ct = 114 Ω), verifying the high charge/ ion conductivity and stable interfacial contact between electrode and electrolyte.…”

Modification of 2D materials using MoS2as a model for investigating the Al-storage properties of diverse crystal facets

“…The smaller R ct (2.3 Ω) of S–MoS 2 than that of MoS 2 (2.4 Ω) illustrates the enhanced conductivity and faster charge-transfer process. 38,39 Moreover, the ion-diffusion capacity of S–MoS 2 and MoS 2 were qualitatively measured according to formulas (1) and (2): 40,41 Z ′ = R ct + R e + σω −1/2 where R and T are the gas constant and temperature, respectively. A and n refer to the cathode area and number of electrons transferred during the reaction, respectively.…”

A novel vanadium coordination supramolecular network with multiple active sites for ultra-durable aqueous zinc metal batteries

“…The relationship between the peak current ( i ) and scan rate ( v ) in CV curves is based on formula (1). 44 i = av b where both a and b are adjustable parameters. The definite b -value is obtained by fitting the linear relationship between log( i ) and log( v ).…”