3D frame-like architecture of N-C-incorporated mixed metal phosphide boosting ultrahigh energy density pouch-type supercapacitors

Xu, Le; Xi, Yukun; Li, Wenbin; Hua, Zile; Peng, Jianhong; Hu, Junhua; Zhou, Jiao–Jiao; Zhang, Peilin; Wang, Jingjing; Wang, Weiwei; Ding, Hualong; Wang, Wanqing; Ji, Wuxing; Yang, Yang; Xu, Xicheng; Chen, Luyang; Li, Xifei

doi:10.1016/j.nanoen.2021.106630

Cited by 95 publications

(48 citation statements)

References 57 publications

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“…The deconvoluted peaks at 781.1 and 796.4 eV correspond to Co 3+ , and the peaks at 782.1 and 798.1 eV are attributed to the Co 2+ valance state. 54 − 56 The deconvoluted Cu 2p spectrum ( Figure 3 e) presents two characteristic peaks, and the distinguished peaks at 932.1 eV (Cu 2p 3/2 ) and 953.8 eV (Cu 2p 1/2 ) are related to Cu 2+ in CuS. 57 , 58 In the S 2p spectra ( Figure 3 f), the two diffraction peaks at 161.4 and 162.8 eV are associated with S 2p 3/2 and S 2p 1/2 of CuS, 57 , 58 respectively, and the two diffraction peaks of the O 1s spectrum are attributed to the signals of O 2– .…”

Section: Resultsmentioning

confidence: 99%

Facile and Controllable Synthesis of CuS@Ni-Co Layered Double Hydroxide Nanocages for Hybrid Supercapacitors

et al. 2022

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The synthesis of battery-type electrode materials with hollow nanostructures for high-performance hybrid supercapacitors (HSCs) remains challenging. In this study, hollow CuS@Ni-Co layered double hydroxide (CuS-LDH) composites with distinguished compositions and structures are successfully synthesized by co-precipitation and the subsequent etching/ion-exchange reaction. CuS-LDH-10 with uniformly dispersed CuS prepared with the addition of 10 mg of CuS shows a unique hollow polyhedral structure constituted by loose nanosphere units, and these nanospheres are composed of interlaced fine nanosheets. The composite prepared with 30 mg of CuS addition (CuS-LDH-30) is composed of a hollow cubic morphology with vertically aligned nanosheets on the CuS shell. The CuS-LDH-10 and CuS-LDH-30 electrodes exhibit high specific capacity (765.1 and 659.6 C g –1 at 1 A g –1 , respectively) and superior cycling performance. Additionally, the fabricated HSC delivers a prominent energy density of 52.7 Wh kg –1 at 804.5 W kg –1 and superior cycling performance of 87.9% capacity retention after 5000 cycles. Such work offers a practical and effortless route for synthesizing unique metal sulfide/hydroxide composite electrode materials with hollow structures for high-performance HSCs.

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Section: Resultsmentioning

confidence: 99%

Facile and Controllable Synthesis of CuS@Ni-Co Layered Double Hydroxide Nanocages for Hybrid Supercapacitors

et al. 2022

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“…The electrochemical performance (capacity for 1C is taken as 180 mA h g –1 ) was tested, and the galvanostatic intermittent titration technique (GITT) was carried out by a galvanostatic charge–discharge system (Neware) at room temperature. The electrode was charged or discharged at 0.1C for 20 min and then relaxed for 20 min to reach a steady state. , The above-mentioned procedure was repeatedly conducted in the range 2.8–4.5 V. The cyclic voltammetry (CV) test was studied on a Princeton Applied Research VersaSTAT4 electrochemical workstation at a scan rate of 0.1 mV s –1 (or 0.3, 0.5, 1) between 2.8 and 4.5 V. The electrochemical impedance spectroscopy (EIS) measurement was carried out by the same electrochemical workstation with an amplitude of 5 mV in the frequency range from 0.01 Hz to 100 kHz.…”

Section: Experimental Methodsmentioning

confidence: 99%

A New Co-Free Ni-Rich LiNi_0.8Fe_0.1Mn_0.1O₂ Cathode for Low-Cost Li-Ion Batteries

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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In recent years, with the rapid development of electric vehicles, the ever-fluctuating cobalt price has become a decisive constraint on the supply chain of the lithium-ion (Li-ion) battery industry. To address these challenges, a new and unreported cobalt-free (Co-free) material with a general formula of LiNi0.8Fe0.1Mn0.1O2 (NFM) is introduced. This Co-free material is synthesized via the coprecipitation method and examined by using scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and density functional theory (DFT) to investigate the morphological, crystal-structure, and electrochemical properties. The NFM cathode can deliver a specific capacity of 202.6 mA h g–1 (0.1C, 3.0–4.5 V), a specific energy capacity of 798.8 W h kg–1 in material level (0.1C, 3.0–4.5 V), a reasonable rate capability, and a stable cycling performance (81.1% discharge capacity retention after 150 cycles at 10C, 3.0–4.3 V). Although the research on this subject is still in its early stage, the capability of this novel cathode material as a practical candidate for applications in next-generation Co-free lithium-ion batteries (LIBs) is highlighted in this study.

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“…Recently, tremendous efforts have been made to designing novel nanostructured, high-rate performance, and low-cost electrochemical materials, including metal phosphides, metal oxides and metal sulfides. 11–13 In addition, transition metal phosphates (TMPs) have become the research emphasis due to their higher electrical conductivity and high capacity for HSCs. Especially, binary TMPs with higher electrical conductivity and superior metalloid properties than a single component received much attention for showing excellent electrochemical properties.…”

Section: Introductionmentioning

confidence: 99%

Interfacial engineering in amorphous/crystalline heterogeneous nanostructures as a highly effective battery-type electrode for hybrid supercapacitors

et al. 2022

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3D frame-like architecture of N-C-incorporated mixed metal phosphide boosting ultrahigh energy density pouch-type supercapacitors

Cited by 95 publications

References 57 publications

Facile and Controllable Synthesis of CuS@Ni-Co Layered Double Hydroxide Nanocages for Hybrid Supercapacitors

Facile and Controllable Synthesis of CuS@Ni-Co Layered Double Hydroxide Nanocages for Hybrid Supercapacitors

A New Co-Free Ni-Rich LiNi_0.8Fe_0.1Mn_0.1O₂ Cathode for Low-Cost Li-Ion Batteries

Interfacial engineering in amorphous/crystalline heterogeneous nanostructures as a highly effective battery-type electrode for hybrid supercapacitors

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3D frame-like architecture of N-C-incorporated mixed metal phosphide boosting ultrahigh energy density pouch-type supercapacitors

Cited by 95 publications

References 57 publications

Facile and Controllable Synthesis of CuS@Ni-Co Layered Double Hydroxide Nanocages for Hybrid Supercapacitors

Facile and Controllable Synthesis of CuS@Ni-Co Layered Double Hydroxide Nanocages for Hybrid Supercapacitors

A New Co-Free Ni-Rich LiNi0.8Fe0.1Mn0.1O2 Cathode for Low-Cost Li-Ion Batteries

Interfacial engineering in amorphous/crystalline heterogeneous nanostructures as a highly effective battery-type electrode for hybrid supercapacitors

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A New Co-Free Ni-Rich LiNi_0.8Fe_0.1Mn_0.1O₂ Cathode for Low-Cost Li-Ion Batteries