Design and preparation of three-dimensional MnO/N-doped carbon nanocomposites based on waste biomass for high storage and ultra-fast transfer of lithium ions

Abstract

Batteries with fast charging capability are urgently needed to meet the rapidly increasing demand for energy storage devices.

La2O3-coated Li2ZnTi3O8@C as a high performance anode for lithium-ion batteries

“…4 Nevertheless, its small theoretical specic capacity (175 mA h g À1 ) restricts it from being widely used in LIBs with high energy density. Therefore, many new anode materials with large specic capacities, including metallic oxides, [5][6][7][8][9] alloy compounds [10][11][12] and Si-based materials, 13,14 have been researched. Unfortunately, the large volume expansion severely deteriorates the cycling performance of the materials mentioned above.…”

Facile synthesis of Camellia oleifera shell-derived hard carbon as an anode material for lithium-ion batteries

“…Moreover, due to the porosity of these biomass carbon materials, they can provide a wide channel for the charge-transfer reaction and facilitate ion transport by shortening diffusion pathways. 14 Accordingly, in recent years, porous carbons derived from biomass for LIB anodes have been explored with a wide range of sources, such as olive, 15,16 cherry stone, 7,15 water hyacinth, 17 rice husk, 18 coconut oil, 19 peanut shell, 20 sweet potato, 21 cotton, 22 litchi, 23 ramie ber and corncob. 24 In one study, byproduct rice husk was used as a carbon precursor and applied as an anode for LIBs, presenting a capacity of 403 mA h g À1 aer 100 cycles at a current density of 75 mA g À1 , higher than that of commercial graphite anodes.…”

NaCl‐Templated and Polyvinylpyrrolidone‐Assisted Fabrication of a MnO/C‐rGO Composite as a High‐Capacity Anode Material for Li‐Ion Batteries

“…Manganese oxides (MnO x ) including MnO 2 , Mn 2 O 3 , Mn 3 O 4 , and MnO have the advantages of high theoretical capacities, abundant resources, low prices and friendly environmental compatibilities and have been widely investigated as the high‐capacity anode materials for LIBs. Among these, MnO has a high theoretical capacity of 756 mAh g −1 (based on MnO + 2Li + + 2e − ↔ Mn + Li 2 O) and a low conversion potential below 0.5 V (vs. Li + /Li).…”

“…Among these, MnO has a high theoretical capacity of 756 mAh g −1 (based on MnO + 2Li + + 2e − ↔ Mn + Li 2 O) and a low conversion potential below 0.5 V (vs. Li + /Li). To improve its Li‐storage performance, MnO is commonly combined with various carbon materials, such as pyrolytic carbon (PC), carbon nanotubes (CNTs), reduced graphene oxide (rGO), and coexistence of N‐doped PC and rGO . Through combination with the highly conductive carbon, the electrical conductivity, active material utilization (specific capacity), and rate performance of the MnO/carbon composites can be obviously enhanced.…”