Electrochemical performance of ZnO-coated Li ₄ Ti ₅ O ₁₂ composite electrodes for lithium-ion batteries with the voltage ranging from 3 to 0.01 V

Abstract

Oxide is widely used in modifying cathode and anode materials for lithium-ion batteries. In this work, a facile method of radio magnetron sputtering is introduced to deposit a thin film on Li4Ti5O12 composite electrodes. The pristine and modified Li4Ti5O12 electrodes are characterized at an extended voltage range of 3–0.01 V. The reversible capacity reaches a high level of 286 mAh g−1, which is a little less than its theoretical capacity (293 mAh g−1). Electrodes modified by ZnO thin films with various thickness show elevated rate capability and improved cycle performance.

Semiconductor Material ZnO-Coated P2-Type Na2/3Ni1/3Mn2/3O2 Cathode Materials for Sodium-Ion Batteries with Superior Electrochemical Performance

“…Except for cation doping, coating modification is another way to enhance the electrochemical performances of NNMO because it introduces an artificial solid electrolyte interphase (SEI) film for the electrodes and maintains the integrity of the electronic conductive network. , The Al 2 O 3 -coated NNMO has good cycle stability and capacity retention because the Al 2 O 3 coating can inhibit the side reactions occurring at high operating voltages as well as exfoliation phenomena, which proves that the use of metal oxide coating is effective for enhancing the electrochemical performances . Meng found that atomic layer deposition is also used in a variety of applications as an effective method for surface modification, especially for battery electrodes .…”

“…Wang et al investigated the effect of ZnO coating on Li 4 Ti 5 O 12 and they confirmed that the interface between electrode and electrolyte were improved. 29 As a semiconductor material, ZnO has good electrical conductivity (7.261 × 10 −5 S•m −1 at 20 °C), 32 and at the same time, it also has the advantages of environmental friendliness and low cost. 29 In this work, ZnO was coated on P2-type NNMO by a simple wet chemical method.…”

“…29 As a semiconductor material, ZnO has good electrical conductivity (7.261 × 10 −5 S•m −1 at 20 °C), 32 and at the same time, it also has the advantages of environmental friendliness and low cost. 29 In this work, ZnO was coated on P2-type NNMO by a simple wet chemical method. The NNMO is air-and waterstable, and the addition of water does not destroy its structure, making wet chemical surface coatings possible.…”

Dual-Modified Li4Ti5O12 Anode by Copper Decoration and Carbon Coating to Boost Lithium Storage

“…The wide potential range of 0.02–3.0 V could render LTO with higher reversible capacity, and both carbon and Cu nanoparticles contribute to the whole electronic conductivity. Table provides some comparisons for the similarly modified LTO. − Despite the difference in fabrication methods and components, LTO@C-Cu exhibits the capacities comparable to or even higher than those in the literature.…”

Enhancing Lithium and Sodium Storage Properties of TiO2(B) Nanobelts by Doping with Nickel and Zinc

“…Indeed, during the first cycle, the TO-Zn-02 electrode gave 219 and 170 mAh·g −1 upon lithiation and delithiation, respectively, revealing that over 77% of initial storage was maintained. This may have been due to ZnO decreasing the surface reactivity, thereby mitigating the electrolyte decomposition upon first lithium insertion [ 62 ]. Regarding the TO-Ni-05 sample, charging and discharging capacities of 254 and 189 mAh·g −1 were registered.…”