Low temperature synthesis of ternary metal phosphides using plasma for asymmetric supercapacitors

Liang, Hanfeng; Xia, Chuan; Jiang, Qiu; Gandi, Appala Naidu; Schwingenschlögl, Udo; Alshareef, Husam N.

doi:10.1016/j.nanoen.2017.04.007

Cited by 331 publications

(177 citation statements)

References 66 publications

Supporting

Mentioning

164

Contrasting

Order By: Relevance

“…[10,15,47,[49][50][51][52] And the rich mixed valenced Ni, Co, and P atoms benefit the formation of ionic and electronic defects, enhancing the electrochemical properties. [10,15,47,[49][50][51][52] And the rich mixed valenced Ni, Co, and P atoms benefit the formation of ionic and electronic defects, enhancing the electrochemical properties.…”

Section: Resultsmentioning

confidence: 99%

Construction of CoP/NiCoP Nanotadpoles Heterojunction Interface for Wide pH Hydrogen Evolution Electrocatalysis and Supercapacitor

Lin

Sun

Liu

et al. 2019

Advanced Energy Materials

308

142

View full text Add to dashboard Cite

Constructing well defined nanostructures is promising but still challenging for high‐efficiency catalysts for hydrogen evolution reaction (HER) and energy storage. Herein, utilizing the differences in surface energies between (111) facets of CoP and NiCoP, a novel CoP/NiCoP heterojunction is designed and synthesized with a nanotadpoles (NTs)‐like morphology via a solid‐state phase transformation strategy. By effective interface construction, the disorder in terms of electronic structure and coordination environment at the interface in CoP/NiCoP NTs is created, which leads to dramatically elevated HER performance within a wide pH range. Theoretical calculations prove that an optimized proton chemisorption and H2O dissociation are achieved by an optimized phosphide polymorph at the interface, accelerating the HER reaction. The CoP/NiCoP NTs are also proved to be excellent candidates for use in supercapacitors (SCs) with a high specific capacitance (1106.2 F g−1 at 1 A g−1) and good cycling stability (nearly 100% initial capacity retention after 1000 cycles). An asymmetric supercapacitor shows a high energy density (145 F g−1 at 1 A g−1) and good cycling stability (capacitance retention is 95% after 3200 cycles). This work provides new insights into the catalyst design for electrocatalytic and energy storage applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Construction of CoP/NiCoP Nanotadpoles Heterojunction Interface for Wide pH Hydrogen Evolution Electrocatalysis and Supercapacitor

Lin

Sun

Liu

et al. 2019

Advanced Energy Materials

308

142

View full text Add to dashboard Cite

show abstract

“…Therefore, bimetallic phosphides composed of nickel and cobalt metals have been reported as an extremely resilient material in strong aqueous electrolytes. [10] The Ni-Co-based battery-type materials are providing abundant redox reactions, which leads to improved charge storage capacity than the electric double layer electrodes, which makes them a masterpiece material for supercapatteries. [7] Owing to the properties mentioned above, the NiCoP finds diverse applications such as electromagnetic wave absorption and soft magnets in data storage media.…”

Section: Introductionmentioning

confidence: 99%

Electrospun Carbon Nanofibers Encapsulated with NiCoP: A Multifunctional Electrode for Supercapattery and Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reactions

Surendran

Shanmugapriya

Sivanantham

et al. 2018

Advanced Energy Materials

276

148

View full text Add to dashboard Cite

Functionalizing nanostructured carbon nanofibers (CNFs) with bimetallic phosphides enables the material to become an active electrode for multifunctional applications. A facile electrospinning technique is utilized for the first time to develop NiCoP nanoparticles encapsulated CNFs that are used as an energy storage system of supercapattery, and as an electrocatalyst for oxygen reduction, oxygen evolution, and hydrogen evolution reaction in KOH electrolyte. Evolving from the inclusion of bimetallic phosphide nanoparticles, the NiCoP/CNF electrode unveils superior‐specific capacitance (333 Fg−1 at 2 Ag−1) and rate capability (87%). The fabricated supercapattery device offers a voltage of 1.6 V that supplies a remarkable energy density (36 Wh kg−1) along with an improved power density (4000 W kg−1) and unwavering cyclic stability (25 000 cycles). Meanwhile, the NiCoP/CNF electrode has simultaneously performed well as a multifunctional electrocatalyst for oxygen reduction reaction at a half‐wave potential of 0.82 V versus reversible hydrogen electrode and can attain a current density of 10 mA cm−2 at a very low overpotential of 268 and 130 mV for the oxygen evolution reaction and hydrogen evolution reaction, respectively. Thus, the NiCoP/CNF with all its inimitable electrode properties has profoundly proved its proficiency at handling multifunctional challenges in terms of both storage and conversion.

show abstract

“…However, SCs display low capacitance values, whichd isqualifies them from extending their applicationsi nto wider ranging fields. [12][13][14][15][16] Developing hybrid cellsb enefitting from the combination of carbon materials plus transition metal oxides/hydroxides has lately been an encouraging practice to enhance the energy density caused by ah igher operating potential window.I ng eneral, hybrid cells are constituted of carbonbased materials as the anode with transition metal oxides( or polymers) as the cathode. [3][4][5] Carbon-based materials exhibit EDLC behavior, whereas transition metal oxides/hydroxides and conducting polymers accumulate charget hrough the PC pathway.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8][9][10][11] Unlike carbon materials,t he transition metal oxides/hydroxides possess high specific capacitance as ar esult of faradaicr eactions occurring on the surface/subsurfacer egions.N evertheless, these are unable to meet the performance of asupercapacitor owing to low electrical conductivity and poor cycling stability. [12][13][14][15][16] Developing hybrid cellsb enefitting from the combination of carbon materials plus transition metal oxides/hydroxides has lately been an encouraging practice to enhance the energy density caused by ah igher operating potential window.I ng eneral, hybrid cells are constituted of carbonbased materials as the anode with transition metal oxides( or polymers) as the cathode. [17] As the electrode materialp lays a decisive role in shaping the ultimate performance of asupercapacitor( or the energy storaged evice), al ot of research is carried out in this area of science, highlighting the use of novel materials with the aim of developing efficient energy storage systems.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a Mo‐Doped Strontium Cobaltite Perovskite Hybrid Supercapacitor Cell with High Energy Density and Excellent Cycling Life

2018

View full text Add to dashboard Cite

Enriched with oxygen vacancies, Mo-doped strontium cobaltite (SrCo Mo O , SCM) is synthesized as an oxygen anion-intercalated charge-storage material through the sol-gel method. The supplemented oxygen vacancies, good electrical conductivity, and high ion diffusion coefficient bestow the SCM electrode with excellent specific capacitance (1223.34 F g ) and specific capacity (168.88 mAh g ) at 1 A g . The decisive constant (b-value) deduced for the charge storage mechanism (low scan-rate region) is nearly 0.8, indicating a highly capacitive process. In the high scan-rate region, however, the b-value is almost 0.5, and a linear pattern of charge (q) versus the inverse of the square root of the scan rate (v ) is obtained. The results reveal O diffusion as the rate-limiting factor for charge storage. Furthermore, a hybrid cell (SCM∥LRGONR) is fabricated by using lacey, reduced graphene oxide nanoribbon (LRGONR) as the negative electrode, which exhibits a high energy density (74.8 Wh kg at a power density of 734.5 W kg ). With a charging time of only 20.7 s, the cell sustains a very high energy density (33 Wh kg ) with a high power delivery rate (6600 W kg ). The excellent cycling stability (165.1 % activated specific capacitance retention and 97.6 % of the maximum value attained) after 10 000 charge-discharge cycles, demonstrates SCM is a potential electrode material for supercapacitors.

show abstract

Low temperature synthesis of ternary metal phosphides using plasma for asymmetric supercapacitors

Cited by 331 publications

References 66 publications

Construction of CoP/NiCoP Nanotadpoles Heterojunction Interface for Wide pH Hydrogen Evolution Electrocatalysis and Supercapacitor

Construction of CoP/NiCoP Nanotadpoles Heterojunction Interface for Wide pH Hydrogen Evolution Electrocatalysis and Supercapacitor

Electrospun Carbon Nanofibers Encapsulated with NiCoP: A Multifunctional Electrode for Supercapattery and Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reactions

Fabrication of a Mo‐Doped Strontium Cobaltite Perovskite Hybrid Supercapacitor Cell with High Energy Density and Excellent Cycling Life

Contact Info

Product

Resources

About