Exploration of biogenic nitrogen doped carbon microspheres derived from resorcinol-formaldehyde as anode for lithium and sodium ion batteries.

The study explores biogenic nitrogen doped carbon microspheres derived from resorcinol, formaldehyde (BNCMs), for battery application. Ureolytic bacteria were used to produce biogenic ammonia in the form of ammonium carbonate and ammonium bicarbonate. Copolymerization of resorcinol, formaldehyde and biogenic ammonia at 60-80 °C produces BNCMs.

Electrocatalysis of Ruthenium Nanoparticles-Decorated Hollow Carbon Spheres for the Conversion of LiS/LiS in Lithium-Sulfur Batteries.

Controlling "polysulfide dissolution" and pacifying "polysulfide shuttle" hold the key in developing a lithium-sulfur battery with superior electrochemical performance. Further, exploration of the concept of electrocatalysts plays a significant role in enhancing the electrochemical reversibility of polysulfides in lithium-sulfur battery. Herein, ruthenium nanoparticles-decorated porous, hollow carbon spheres have been successfully prepared and deployed as electrocatalyst as well as sulfur host in the lithium-sulfur battery assembly.

Designed Formulation of Se-Impregnated N-Containing Hollow Core Mesoporous Shell Carbon Spheres: Multifunctional Potential Cathode for Li-Se and Na-Se Batteries.

Nitrogen-containing carbon spheres with hollow core and mesoporous shell (NHCS), capable of confining Se at levels as high as 72 wt % has been demonstrated to exhibit appreciable electrochemical behavior with 52 and 61 wt % Se loading. In particular, 52 wt % Se confined NHCS cathode exhibits 265 mAh/g at 10C rate and retains 75% of initial capacity at 2C rate up to 10 000 cycles with an insignificant decay of 0.0025% per cycle, which is an ever first report on the extended cycle life of Li-Se batteries.

Exploration of MnFeO/Multiwalled Carbon Nanotubes Composite as Potential Anode for Lithium Ion Batteries.

MnFeO, investigated for its application in sensors, catalysis, and semiconductors, was explored for the first time as anode for lithium ion batteries in the form of MnFeO/multiwalled carbon nanotubes (MWCNT) composite. A scalable and highly reproducible sonochemical process was adopted to form the composite, wherein the interweaved MWCNT ensures better electronic conductivity and pinning of pristine MnFeO particles with a conductive coating. MnFeO/MWCNT composite anode exhibits superior electrochemical properties than pristine MnFeO anode in such a manner that a steady-state reversible capacity of 840 mAh g was obtained at 0.

Designed construction and validation of carbon-free porous MnO spheres with hybrid architecture as anodes for lithium-ion batteries.

Porous micro/nanostructures of earth abundant and ecobenign metals are emerging as advanced green materials for use in electrochemical energy storage devices. We present here the custom designed construction of a hybrid architecture containing porous MnO microspheres, formed out of hierarchically assembled nanoparticles using a template-free co-precipitation method, wherein the sacrificial template growth of porous spheres has been obtained by a solution mediated and time dependent oxidation strategy. The nanoporous channels in the MnO microspheres and the nanosized primary particles of MnO anodes in synergy increase the electrolyte percolation, resulting in a discharge capacity of 1200 mA h g(-1) at a current density of 50 mA g(-1) and a capacity as high as 450 mA h g(-1) under the 1000 mA g(-1) condition.

LiVP2O7/C: A New Insertion Anode Material for High-Rate Lithium-Ion Battery Applications.

LiVP2O7/C, popularly known so far as an environmentally compatible and economically viable lithium battery cathode material, was exploited for the first time as an anode through the current study. LiVP2O7/C was synthesized by adopting oxalyl dihydrazide assisted solution combustion method and explored as an anode material in rechargeable lithium cell assembly. Notably, an initial capacity of 600 mAh g(-1) was exhibited by LiVP2O7/C anode, at the rate of 0.

Li2Ni(0.5)Mn(0.5)SnO4/C: A Novel Hybrid Composite Electrode for High Rate Applications.

A novel Li2Ni(0.5)Mn(0.5)SnO4/C composite electrode, existing as a hybrid consisting of monoclinic Li2SnO3 and layered LiNi(0.