Structurally stabilized Na3V2(PO4)3/C composite cathode materials with excellent electrochemical performance can be obtained by incorporating functional pillar ions into the structure. As ions, K-ions have a larger ionic radius compared to Na-ions, and play an important role in enlarging Na-ion diffusion pathway increasing lattice volume elongating c-axis, thereby improving rate performance. Furthermore, since incorporated rarely participate extraction/insertion reactions, they stabilize...

Black TiO_2−x nanotube arrays, which are synthesized by an electrochemical method and subsequent thermal conversion in a hydrogen atmosphere, employed as binder-free, free-standing electrodes for high rate Li-ion microbatteries.

We have designed a unique microstructure of graphene embedded LiFePO4 by catalyst assisted self assembly method as cathode material for high power lithium-ion batteries. The stable amide bonds between and were formed the assembly. High conductive provides fast electron transfer path, many pores inside structure facilitate diffusion. fabricated novel shows enhanced cycling performance rate-capability compared with that carbon coated

Nanostructured electrodes have recently received great attention as components in lithium rechargeable batteries, especially because of the high power produced by fast kinetic properties these unique structures. Here, we report successful synthesis various nanostructured morphologies spinel manganese oxide (nanorod, nanothorn sphere, and sphere) from a similarly shaped dioxide precursor that was controlled with different aluminium contents hydrothermal method. Among structures, sphere...

LiMn2O4, Li1.05Mn1.95O4, and Li1.05Mn1.95O3.95Cl0.05 are prepared by a solution-based process to investigate the influences of codoping Li Cl on electrochemical performance structural stability Li1+xMn2-xO4-yCly (x, y = 0, 0.05). features an improved cycling rate capability compared with LiMn2O4 which originate from reduction in Mn dissolution into electrolyte Cl. The improvement is more appreciable at higher temperature. Further, electrode resistance much lower than that over first charge,...

Porous and coarse (5-10 μm) LiFePO₄/C composites with excellent electrochemical performance were synthesized by a growth technology using nanostructured (100-200 nm) LiFePO₄ as seed crystals for the 2nd crystallization process. The porous presented high initial discharge capacity (∼155 mA h g⁻¹ at 0.1 C), superior rate-capability (∼100 5 C, ∼65 % of cycling (∼131 g⁻¹, ∼98 its after 100 cycles 1 C). improvement in was attributed to reaction area resulted from pore tunnels formed inside...

We study the structural and electrochemical performance of sulfur cathodes prepared with two different binders, PVdF SBR/CMC. Enhanced battery is observed in SBR/CMC-based electrode its origin scrutinized.

Li metal is considered the ultimate electrode for lithium-ion batteries due to its high specific capacity (3860 mAh g–1) and density (0.534 g cm–3). Despite these advantages, practical use of Li-metal electrodes currently limited by uncontrollable Li-plating stripping, which causes undesirable dendritic growth severe volume changes during cycles. As a solution successful implementation electrodes, we propose herein three-dimensional (3D) integrating 3D Ni foam as current collector via molten...

We introduce a new synthesis method to prepare small TiO2 nanoparticles with narrow particle size distribution, which is achieved by electron beam (E-beam) irradiation. The effects of E-beam irradiation on the and electrochemical performance as alternative anode materials for Li-ion batteries are investigated. induced present better cycling rate capability than synthesized normal hydrolysis reaction. attributed resulting in large surface area that provides innumerable reaction sites short...

The effects of electrodeposition conditions on the cycle performance Sn electrodes were investigated in this study. electrodeposited Cu substrates under different conditions, such as baths and current densities to maximize coulombic efficiency. By using types baths, with phases electrodeposited. formation an η-Cu6Sn5 phase between layer substrate contributes improvement electrode. As density increased, layers became less dense structure nodule-type morphology. morphology exhibited a better...

We introduce a new synthesis method to prepare small TiO2 nanoparticles with narrow particle size distribution, which is achieved by electron beam (E-beam) irradiation. The effects of E-beam irradiation on the and electrochemical performance as alternative anode materials for Li-ion batteries are investigated. induced present better cycling rate capability than synthesized normal hydrolysis reaction. attributed resulting in large surface area that provides innumerable reaction sites short...

Lithium metal is often regarded as the ultimate anode for lithium-ion batteries (LIBs) due to its superior specific capacity (3,860 mAh g -1 ) and density (0.534 cm -3 ). However, real-world application of Li-metal electrodes presently hindered by unregulated Li-plating stripping, leading unwanted dendritic growth significant volume change during cycles. To overcome these challenges, we suggest a three-dimensional (3D) anode, which incorporates 3D Ni foam current collector through molten Li...

As demand for electric vehicles increases, interest in cathode materials with high energy density continues to increase. Ni-rich layered NCM811 is a material attracting attention because it can realize density. However, currently available NCM use secondary particles. In the case of commercial NCM811, which has particle shape, cycle-life characteristics rapidly decrease due cracks primary particles constituting Single crystallization used minimize these cracks. Single-crystal cathodes...

Multi-walled carbon nanotube (MWNT)/silicon composites with different weight ratios were produced from purified MWNTs and Si powder by high energy ball-milling then electrochemically inserted lithium. The charge/discharge properties for the ball-milled MWNT/Si composite anodes found to be very sensitive ratio of MWNT Si. highest Crev lowest Cirr anode measured 1770 mAh/g 469 mAh g-1 respectively at MWNT0.5/Si0.5. During charging/discharging processes, most Li ions into alloying particles...

Sodium-ion rechargeable batteries (SIBs) have attracted great attention as promising next-generation batteries, especially for large-scale energy storage systems (ESS), owing to the natural abundance of Na resources and similarities in their chemical structure reaction mechanism commercial lithium-ion (LIBs). Thus, enormous efforts been made improve electrochemical performance SIBs through development novel cathode materials. According previous literatures, P2-type layered materials suffered...