A Facile Preparation of Hierarchical β-Ni(OH)2@NiAl-LDHs Nanosheets on 3D Nickel Foam as Ultra High Rate Capability Cathode without Binder for Nickel Based Batteries. Issue 10 (28th June 2019)

• Record Type: Journal Article
• Authors: Khan, Abrar; Senthil, Raja Arumugam; Pan, Junqing; Sun, Yanzhi
• Is Part Of: Journal of the Electrochemical Society. Volume 166:Issue 10(2019)
• Page Start: A2273
• Page End: A2279
• Publication Date: 2019-06-28
• Subjects: Batteries -- β-Ni(OH)2@NiAl-LDHs -- Binder-free cathode -- Nickel batteries; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0031912jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Designing of economical and high-efficiency electrode materials are received much attention for high-performance rechargeable batteries. Herein, we designed and grown the β-Ni(OH)2 @NiAl-LDHs nanostructures on 3D nickel foam (NF) as substrate via a simple in-situ complexation-precipitation method with the one-pot process. More interestingly, the β-Ni(OH)2 @NiAl-LDHs are uniformly covered on NF with a hierarchical nanosheets-shaped morphology. The attained β-Ni(OH)2 @NiAl-LDHs/NF suggested as advanced cathode without binder in nickel-based batteries. It implies that β-Ni(OH)2 @NiAl-LDHs/NF cathode provided the high specific capacities of 423 and 357 mAh g −1 at 20 and 100 A g −1, respectively. Besides, the β-Ni(OH)2 @NiAl-LDHs/NF cathode maintains 94.6% of capacity over 10, 000 cycles at an ultra-high current density of 100 A g −1, indicating its outstanding rate ability and superb durability. The achieved electrochemical properties are ascribed to its special structure with enhanced binding interaction within the β-Ni(OH)2 @NiAl-LDHs and 3D NF. Thus, the reported new material will be a rational way toward the designing of high-performance cathode for nickel based batteries.