Formation of NiCo₂V₂O₈ Yolk–Double Shell Spheres with Enhanced Lithium Storage Properties

Abstract

Complex nanostructures with multi-components and intricate architectures hold great potential in developing high-performance electrode materials for lithium-ion batteries (LIBs). Herein, we demonstrate a facile self-templating strategy for the synthesis of metal vanadate nanomaterials with complex chemical composition of NiCo V O and a unique yolk-double shell structure. Starting with the Ni-Co glycerate spheres, NiCo V O yolk-double shell spheres are synthesized through an anion-exchange reaction of Ni-Co glycerate templates with VO ions, followed by an annealing treatment. By virtue of compositional and structural advantages, these NiCo V O yolk-double shell spheres manifest outstanding lithium storage properties when evaluated as anodes for LIBs. Impressively, an extra-high reversible capacity of 1228 mAh g can be retained after 500 cycles at a high current density of 1.0 Ag .

A Dual Carbon‐Based Potassium Dual Ion Battery with Robust Comprehensive Performance

“…Nowadays, the demand for smart energy storage devices is on a rapid rise as portable electronic devices and electric vehicles become more and more popular . Among the related devices, lithium (Li) ion batteries (LIBs) dominate the market, owing to their high energy density and matured manufacturing technology . However, the relatively limited reserve and uneven geographical distribution of the lithium resources give a tremendous challenge to LIBs for meeting the continuously increasing requirement on the high performance‐to‐cost ratios.…”

“…[1][2][3][4][5][6][7][8] Among the related devices, lithium (Li) ion batteries (LIBs) dominate the market, owing to their high energy density and matured manufacturing technology. [9][10][11][12][13][14][15][16][17] However, the relatively limited reserve and uneven geographical distribution of the lithium resources give a tremendous challenge to LIBs for meeting the continuously increasing requirement on the high performance-to-cost ratios. Therefore, other metal ion batteries such as sodium (Na) ion discharge voltage, and energy density.…”

PPy‐encapsulated SnS2 Nanosheets Stabilized by Defects on a TiO2 Support as a Durable Anode Material for Lithium‐Ion Batteries

“…[2] Great efforts have been focused on enhancing the overall performance of LIBs,f or which the improvements of anode materials are undoubtedly important. [3] Graphite,t he most widely used anode in commercial LIBs,h as almost approached its specific-capacity ceiling and further improvement of capacity is expected to encounter unprecedented challenges. [4] Thus,various alloy-type anodes (for example Sn, Sb,S i, Ge,S nO 2 ,S nS 2 ,a nd Sb 2 S 3 )h ave been extensively explored due to their ultra-high theoretical capacity.…”

All-carbon positive electrodes for stable aluminium batteries

“…Since increasing demands in energy storage fields, rechargeable alkaline metal batteries including lithium ion batteries, sodium ion batteries and potassium ion batteries [1][2][3][4][5][6] , are significantly developed in the past years. However, unexpected safety issues induced by the highly active alkaline metals along with flammable organic electrolytes are considered as the major concerns in the energy storage devices and systems [7,8] .…”