Carbothermal reduction 1 Diglyme 1 Diglymes 1 Electrodes 1 Hard template 1 Hard templates 1 Marine shrimp 1 Marine shrimp waste 1 Metal ions 1 Na-ion batteries 1 Nanominerals 1 Negative electrode 1 Particle size 1 Reversible capacity 1 Shellfish 1 Shrimp wastes Sodium compounds 1 Sodium-ion batteries 1 TiN nanoparticles 1 Tin 1 Tin nanoparticles 1 Transmission electron microscopy 1