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Title: Efficient 3D Printed Pseudocapacitive Electrodes with Ultrahigh MnO2 Loading

Journal Article · · Joule

Retaining sound electrochemical performance of electrodes at high mass loading holds critical importance to energy storage. Pseudocapacitive materials such as manganese oxide (MnO2) deposited on current collectors have achieved outstanding gravimetric capacitances, sometimes even close to their theoretical values. However, this is only achievable with very small mass loading of active material typically less than 1 mg cm-2. Increasing mass loading often leads to drastic decay of capacitive performance due to sluggish ion diffusion in bulk material. In this work, we demonstrate a 3D printed graphene aerogel electrode with MnO2 loading of 182.2 mg cm-2, which achieves a record-high areal capacitance of 44.13 F cm-2. Most importantly, this 3D printed graphene aerogel/MnO2 electrode can simultaneously achieve excellent capacitance normalized to area, gravimetry, and volume, which is the trade-off for most electrodes. This work successfully validates the feasibility of printing practical pseudocapacitive electrodes, which might revolutionize pseudocapacitor fabrication.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1581898
Report Number(s):
LLNL-JRNL-751399; 937270
Journal Information:
Joule, Vol. 3, Issue 2; ISSN 2542-4351
Publisher:
Elsevier - Cell PressCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 270 works
Citation information provided by
Web of Science

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Intrapore‐Texturized Vanadia‐Hydrate Supercapacitor with Ultrahigh Area‐Normalized Capacitance journal October 2019
Versatile N‐Doped MXene Ink for Printed Electrochemical Energy Storage Application journal July 2019
Rheological Issues in Carbon-Based Inks for Additive Manufacturing journal January 2019
A review on synthesis of graphene, h-BN and MoS2 for energy storage applications: Recent progress and perspectives journal July 2019
A universal in situ strategy for charging supercapacitors journal January 2019
Densely Functionalized Cyanographene Bypasses Aqueous Electrolytes and Synthetic Limitations Toward Seamless Graphene/β‐FeOOH Hybrids for Supercapacitors journal October 2019
3D Printing of Electrochemical Energy Storage Devices: A Review of Printing Techniques and Electrode/Electrolyte Architectures journal November 2019
3D All Printing of Polypyrrole Nanotubes for High Mass Loading Flexible Supercapacitor journal September 2019
Cobalt-Containing Nanoporous Nitrogen-Doped Carbon Nanocuboids from Zeolite Imidazole Frameworks for Supercapacitors journal August 2019
3D Exfoliated Carbon Paper toward Highly Loaded Aqueous Energy Storage Applications journal September 2019
A Universal Converse Voltage Process for Triggering Transition Metal Hybrids In Situ Phase Restruction toward Ultrahigh‐Rate Supercapacitors journal May 2019
3D Printing of Ultralight Biomimetic Hierarchical Graphene Materials with Exceptional Stiffness and Resilience journal July 2019
An ultrathin defect-rich Co 3 O 4 nanosheet cathode for high-energy and durable aqueous zinc ion batteries journal January 2019
Sulfur-Deficient Porous SnS2−x Microflowers as Superior Anode for Alkaline Ion Batteries journal January 2020
Flexible 3D hierarchical porous NiCo2O4/CC electrode decorated by nitrogen-doped carbon from polyaniline carbonization for high-performance supercapacitors journal February 2020
Structural engineering to maintain the superior capacitance of molybdenum oxides at ultrahigh mass loadings journal January 2019
Free-standing transition metal oxide electrode architectures for electrochemical energy storage journal July 2019
Chemistry from 3D printed objects journal April 2019
Electrochemical in situ construction of vanadium oxide heterostructures with boosted pseudocapacitive charge storage journal January 2020
MnO2@NiO nanosheets@nanowires hierarchical structures with enhanced supercapacitive properties journal October 2019
3D‐Printed Structure Boosts the Kinetics and Intrinsic Capacitance of Pseudocapacitive Graphene Aerogels journal January 2020