TY - JOUR
T1 - 'Cotton-ball' shaped porous iron-nickel sulfide
T2 - a high-rate cathode for long-life aqueous rechargeable battery
AU - Pramanik, A
AU - Maiti, S
AU - Chattopadhyay, S
AU - De, G
AU - Mahanty, S
N1 - Funding: A. Pramanik and S. Maiti thank CSIR India for senior research fellowship (Award Nos. 31/15(136)/2017-EMR-I and 31/15(127)/2015-EMR-I respectively). S. Chattopadhyay thanks UGC, India for research fellowship (Award No. F.2-44/2011(SA-I).
PY - 2021/8/1
Y1 - 2021/8/1
N2 - Aqueous rechargeable batteries (ARB) offer reasonably higher energy density and cycle life than their non-aqueous counterparts. Yet, the bottleneck is a limited choice of positive electrodes coupled with low-rate capability and inadequate cycle life. We report here a wet chemical approach to synthesize in-situ three-dimensional (3D) ‘cotton-ball’ shaped porous iron-nickel sulfide (FeNi2S4) (henceforth referred to as PINS) as a diffusion-controlled ARB electrode. It shows a high specific capacity of 177 mA h g−1 at 1 A g−1 vs Pt in the alkaline electrolyte with excellent rate capability (89 mA h g−1 at 40 A g−1) and ultra-long cycle life (10,000 cycles). Furthermore, a pouch-type full-cell ARB (FeNi2S4//AC) delivers an energy density of 56.7 Wh kg−1 at a power density of 871.5 W kg−1 with high cycling stability (10,000 cycles). The present study offers a straightforward and efficient approach for developing nanostructured transition metal sulfide-based cathode materials for practical ARB.
AB - Aqueous rechargeable batteries (ARB) offer reasonably higher energy density and cycle life than their non-aqueous counterparts. Yet, the bottleneck is a limited choice of positive electrodes coupled with low-rate capability and inadequate cycle life. We report here a wet chemical approach to synthesize in-situ three-dimensional (3D) ‘cotton-ball’ shaped porous iron-nickel sulfide (FeNi2S4) (henceforth referred to as PINS) as a diffusion-controlled ARB electrode. It shows a high specific capacity of 177 mA h g−1 at 1 A g−1 vs Pt in the alkaline electrolyte with excellent rate capability (89 mA h g−1 at 40 A g−1) and ultra-long cycle life (10,000 cycles). Furthermore, a pouch-type full-cell ARB (FeNi2S4//AC) delivers an energy density of 56.7 Wh kg−1 at a power density of 871.5 W kg−1 with high cycling stability (10,000 cycles). The present study offers a straightforward and efficient approach for developing nanostructured transition metal sulfide-based cathode materials for practical ARB.
KW - Ternary metal sulfide
KW - FeNi2S4
KW - Hydrothermal synthesis
KW - Aqueous recharge battery
KW - Electrochemical energy storage
U2 - 10.1016/j.materresbull.2021.111307
DO - 10.1016/j.materresbull.2021.111307
M3 - Article
SN - 0025-5408
VL - 140
JO - Materials Research Bulletin
JF - Materials Research Bulletin
M1 - 111307
ER -