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Title: The Development of Pseudocapacitive Properties in Nanosized-MoO2

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.0141505jes· OSTI ID:1370243
 [1];  [1];  [1];  [1]
  1. Univ. of California, Los Angeles, CA (United States)

Pseudocapacitive charge storage materials offer the opportunity to bridge the gap between high energy density battery materials and high power density electrical double layer capacitor materials through the rational design of transition metal oxide nanoscale architectures. The research reported in this paper describes the origins and development of pseudocapacitance in MoO2. Micron-size particles of MoO2 exhibit a reversible monoclinic to orthorhombic phase transition upon lithium insertion/deinsertion, however, this phase transformation is suppressed when using 15 nm nanocrystals of MoO2. The nanoscale MoO2 exhibits pseudocapacitive behavior and achieves substantially better energy storage kinetics than the corresponding bulk material. Such size-dependent electrochemical behavior is an essential feature of an extrinsic pseudocapacitor material. The high power capability of nanoscale MoO2 is improved further by synthesizing hybrid materials in which MoO2 nanoparticles are grown on reduced graphene oxide (RGO) scaffolds. Electrode architectures containing MoO2-RGO hybrid materials preserve the pseudocapacitance of MoO2 as lithium capacities of nearly 150 mAh g–1 are obtained at a rate of 50 C.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Molecularly Engineered Energy Materials (MEEM)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001342; 0840531
OSTI ID:
1370243
Journal Information:
Journal of the Electrochemical Society, Vol. 162, Issue 5; Related Information: MEEM partners with University of California, Los Angeles (lead); University of California, Berkeley; Eastern Washington University; University of Kansas; National Renewable Energy Laboratory; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 148 works
Citation information provided by
Web of Science

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Cited By (36)

Rapid Pseudocapacitive Sodium-Ion Response Induced by 2D Ultrathin Tin Monoxide Nanoarrays journal February 2017
Enhanced Capacity and Rate Capability of Nitrogen/Oxygen Dual-Doped Hard Carbon in Capacitive Potassium-Ion Storage journal December 2017
Multidimensional Synergistic Nanoarchitecture Exhibiting Highly Stable and Ultrafast Sodium-Ion Storage journal March 2018
Large Intercalation Pseudocapacitance in 2D VO 2 (B): Breaking through the Kinetic Barrier journal August 2018
Flexible WS 2 @CNFs Membrane Electrode with Outstanding Lithium Storage Performance Derived from Capacitive Behavior journal December 2017
Mesoporous MoS 2 as a Transition Metal Dichalcogenide Exhibiting Pseudocapacitive Li and Na-Ion Charge Storage journal February 2016
Pseudocapacitive Charge Storage in Thick Composite MoS 2 Nanocrystal-Based Electrodes journal October 2016
Ultrafine MoO 2 -Carbon Microstructures Enable Ultralong-Life Power-Type Sodium Ion Storage by Enhanced Pseudocapacitance journal April 2017
Emergent Pseudocapacitance of 2D Nanomaterials journal February 2018
Electrochemical and Structural Investigation of Calcium Substituted Monoclinic Li 3 V 2 (PO 4 ) 3 Anode Materials for Li‐Ion Batteries journal July 2019
Design of Carbon/Metal Oxide Hybrids for Electrochemical Energy Storage journal June 2018
Phosphorus Particles Embedded in Reduced Graphene Oxide Matrix to Enhance Capacity and Rate Capability for Capacitive Potassium-Ion Storage journal August 2018
MoS 2 /MoO x -Nanostructure-Decorated Activated Carbon Cloth for Enhanced Supercapacitor Performance journal February 2018
Co–Sn Nanocrystalline Solid Solutions as Anode Materials in Lithium‐Ion Batteries with High Pseudocapacitive Contribution journal April 2019
In Operando Calorimetric Measurements for Activated Carbon Electrodes in Ionic Liquid Electrolytes under Large Potential Windows journal January 2020
Enhanced pseudocapacitive energy storage properties of Nb 2 O 5 /C core‐shell structures with the surface modification journal May 2019
A 1D Honeycomb‐Like Amorphous Zincic Vanadate for Stable and Fast Sodium‐Ion Storage journal January 2020
Interface-modulated fabrication of hierarchical yolk–shell Co3O4/C dodecahedrons as stable anodes for lithium and sodium storage journal April 2017
Array of nanosheets render ultrafast and high-capacity Na-ion storage by tunable pseudocapacitance journal June 2016
Efficient storage mechanisms for building better supercapacitors journal May 2016
Oxygen vacancies enhance pseudocapacitive charge storage properties of MoO3−x journal December 2016
Achieving high energy density and high power density with pseudocapacitive materials journal October 2019
Li 4 Ti 5 O 12 –TiO 2 /MoO 2 nanoclusters-embedded into carbon nanosheets core/shell porous superstructures boost lithium ion storage journal January 2017
Fresh MoO 2 as a better electrode for pseudocapacitive sodium-ion storage journal January 2018
Pseudocapacitive layered birnessite sodium manganese dioxide for high-rate non-aqueous sodium ion capacitors journal January 2018
Self-stacked multilayer FeOCl supported on a cellulose-derived carbon aerogel: a new and high-performance anode material for supercapacitors journal January 2019
Targeted synthesis of ionic liquid-polyoxometalate derived Mo-based electrodes for advanced electrochemical performance journal January 2019
NiS 2 nanoparticles anchored on open carbon nanohelmets as an advanced anode for lithium-ion batteries journal January 2020
Molybdenum oxide nano-dumplings with excellent stability for photothermal cancer therapy and as a controlled release hydrogel journal January 2019
Towards fast-charging technologies in Li + /Na + storage: from the perspectives of pseudocapacitive materials and non-aqueous hybrid capacitors journal January 2019
Electrochemically modified graphite paper as an advanced electrode substrate for supercapacitor application journal January 2019
Carbon Coated SnO 2 as a Negative Electrode Additive for High Performance Lead Acid Batteries and Supercapacitors journal January 2019
MnO 2 -Carbon Nanotube Electrodes for Supercapacitors with High Active Mass Loadings journal January 2017
Electrochemical and Structural Investigation of Calcium Substituted Monoclinic Li3V2(PO4)3 Anode Materials for Li‐Ion Batteries text January 2019
Towards fast-charging technologies in Li+/Na+ storage: from the perspectives of pseudocapacitive materials and non-aqueous hybrid capacitors text January 2019
Design of Carbon/Metal Oxide Hybrids for Electrochemical Energy Storage collection January 2018

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