Multifunctional Ni-NiO-CNT Composite as High Performing Free Standing Anode for Li Ion Batteries and Advanced Electro Catalyst for Oxygen Evolution Reaction

Elizabeth, Indu; Nair, Anju K.; Singh, Bhanu Pratap; Gopukumar, S.

doi:10.1016/j.electacta.2017.01.189

Cited by 89 publications

(33 citation statements)

References 52 publications

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“…The peak at 529.6 eV agrees well with the O atoms in the NiO bonding structure. The peaks of O1s at 531.4 and 532.9 eV can be attributed to oxygen atoms chemically bonded in NiOH and OCO respectively . Additionally, in Figure d, the high‐resolution Ni2p region shows two peaks centered at about 871.9 and 854.7 eV, which match well with Ni2p 1/2 and Ni2p 3/2 , respectively.…”

Section: Resultsmentioning

confidence: 62%

“…In the following step, galvanostatic discharge/charge curves at a current density of 100 mA g −1 are shown in Figure b. The first lithiation occurs at about 0.6 V, whereas the subsequent lithiation plateaus slope from 1.0 to 1.4 V . The curves display the discharge/charge profiles of the NNSC within a cutoff voltage window of 0.01–3.0V versus Li + /Li.…”

Section: Resultsmentioning

confidence: 99%

“…For the NNSC, the above‐mentioned peaks can be clearly observed not only in the first irreversible process but also in the subsequent reversible processes in the similar potential range, which could be related to the combination of the carbon matrix and the NiO crystal. The electrodes of NNSC go through the conventional reaction for insertion/desertion and conversion with lithium: C + x Li + + x e − → Li x C, Li x C → C + x Li + + x e − , NiO + 2Li ⇋ Ni + Li 2 O …”

Section: Resultsmentioning

confidence: 99%

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Baby Diaper‐Inspired Construction of 3D Porous Composites for Long‐Term Lithium‐Ion Batteries

Wei

Zhang

Wang

et al. 2017

Adv Funct Materials

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In this paper, by using the superabsorbent polymers (SAPs) from baby diaper, the 3D porous composites decorated with NiO and Ni nanoparticles (NNSCs) have been prepared via a facile dissolving-freeze drying and subsequent annealing reactions. The porous carbon matrix (PCM) derived from the SAPs also provides a continuous highly conductive network to facilitate the fast charge transfer and form a stable solid electrolyte interface film. Furthermore, NNSC can exhibit the high specific capacity and excellent cycle performance as anode materials for lithium-ion batteries. And more importantly, employing the PCM derived from baby diaper offers a green approach for other energy storage materials.

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Section: Resultsmentioning

confidence: 62%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Baby Diaper‐Inspired Construction of 3D Porous Composites for Long‐Term Lithium‐Ion Batteries

Wei

Zhang

Wang

et al. 2017

Adv Funct Materials

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“…The X-ray diffractometry (XRD) spectra of the samples are shown in Figure 1a. [38,39] The sulfuration of Ni 3 N can be controlled by tuning the thiourea concentration. It should be noted that Ni shows a smaller contribution for energy storage but plays an important role in the reversible formation/decomposition of some constituents in solid electrolyte interface films, therefore decreasing the capacity loss.…”

Section: Synthesis and Composition Characterizationmentioning

confidence: 99%

Phase Boundary Derived Pseudocapacitance Enhanced Nickel‐Based Composites for Electrochemical Energy Storage Devices

Long

Balogun

Luo

et al. 2017

Advanced Energy Materials

132

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trode materials for the replacement of the conventional graphite. [1][2][3][4][5][6] However, they suffer from a variety of problems such as poor conductivity for the oxides/ hydroxyls/sulfides and bad structural stability for the nitrides. [7][8][9][10][11] Some of the common methods used to solve the above problems include nanostructuring, [12] carbon coating, [13,14] mixing with carbonbased materials, [15,16] and the construction of TMC composites. [17,18] The preparation of TMC composites usually combines the advantages of each material, leading to synergistic effect. [19][20][21] According to the study by J. Maier, the phase interface present in a composite often leads to lattice mismatch and therefore creates more active sites for energy storage, enabling the electrodes to exceed their theoretical capacity. [22,23] Moreover, the lattice mismatch is also beneficial for the transformation of lithium ions and electrons, which could also result in the improved rate performance. On the other hand, the predominant pseudocapacitive processes in lithium-ion batteries make active materials show better rate capability. [24] Many electrode materials such as MoO 3 , [25] SnO, [26] and SnS [27] have been found with excellent pseudocapacitive characteristics both in lithium and sodiumion batteries because these materials store more energy at the surface or near surface of the material by Faradaic charge transfer. [1] Pseudocapacitance materials can either be intrinsic (i.e., storage properties not based on particle sizes and morphologies such as RuO 2 and MnO 2 ) or extrinsic (i.e., storage properties based on the preparation of porous or nanometersized active materials such as V 2 O 5 and MoO 2 ). [27] Moreover, pseudocapacitive contributions have been obtained in some insertion, conversion, and alloying reaction of individual or single electrode materials, while their application in composites has been less studied. [28] In view of advances of various TMC composite electrodes, it is highly challenging to study their relationship to pseudocapacitance contributions.Among the commonly reported electrode materials with pseudocapacitive properties, nickel-based materials (NiO, Ni 3 S 2 , and Ni 3 N) have attracted intense attention due to their low cost and theoretical capacity higher than that of conventional graphite. [29] Several strategies have been employed to improve the performance of energy storage devices through the development of new electrode materials. The construction of transition metal compound composite electrodes plays an important role in promoting the performance of energy storage devices. However, understandings of and insight into how to enhance the composites properties are rarely reported. Taking nickel-based compounds as an example, Ni 3 N@ Ni 3 S 2 hybrid nanosheets are reported as a high-performance anode material for lithium-ion batteries that delivers higher lithium storage properties than the pristine Ni 3 N and Ni 3 S 2 electrodes. This demonstrates that the phase boundaries between the Ni 3 N...

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“…NiO, for example, has been widely deployed as potential electrode material for LIBs due to their high theoretical capacities (718 mAh g −1 ) which is 2–3 times higher than that of commercial graphite electrodes (372 mAh g −1 ). Nevertheless, its structural instability during cycling and poor rate capability are not desirable owing to its poor electronic conductivity and the serious volume expansion during lithium insertion/extraction …”

Section: Introductionmentioning

confidence: 99%

Functionalized Graphene Quantum Dot Modification of Yolk–Shell NiO Microspheres for Superior Lithium Storage

Yin

Chen

Zhi

et al. 2018

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Yolk-shell NiO microspheres are modified by two types of functionalized graphene quantum dots (denoted as NiO/GQDs) via a facile solvothermal treatment. The modification of GQDs on the surface of NiO greatly boosts the stability of the NiO/GQD electrode during long-term cycling. Specifically, the NiO with carboxyl-functionalized GQDs (NiO/GQDsCOOH) exhibits better performances than NiO with amino-functionalized GQDs (NiO/GQDsNH ). It delivers a capacity of ≈1081 mAh g (NiO contribution: ≈1182 mAh g ) after 250 cycles at 0.1 A g . In comparison, NiO/GQDsNH electrode holds ≈834 mAh g of capacity, while the bald NiO exhibits an obvious decline in capacity with ≈396 mAh g retained after cycling. Except for the yolk-shell and mesoporous merits, the superior performances of the NiO/GQD electrode are mainly ascribed to the assistance of GQDs. The GQD modification can support as a buffer alleviating the volume change, improve the electronic conductivity, and act as a reservoir for electrolytes to facilitate the transportation of Li . Moreover, the enrichment of carboxyl/amino groups on GQDs can further donate more active sites for the diffusion of Li and facilitate the electrochemical redox kinetics of the electrode, thus together leading to the superior lithium storage performance.

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Multifunctional Ni-NiO-CNT Composite as High Performing Free Standing Anode for Li Ion Batteries and Advanced Electro Catalyst for Oxygen Evolution Reaction

Cited by 89 publications

References 52 publications

Baby Diaper‐Inspired Construction of 3D Porous Composites for Long‐Term Lithium‐Ion Batteries

Baby Diaper‐Inspired Construction of 3D Porous Composites for Long‐Term Lithium‐Ion Batteries

Phase Boundary Derived Pseudocapacitance Enhanced Nickel‐Based Composites for Electrochemical Energy Storage Devices

Functionalized Graphene Quantum Dot Modification of Yolk–Shell NiO Microspheres for Superior Lithium Storage

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