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Title: Boron supercapacitors

Journal Article · · ACS Energy Letters
 [1];  [2];  [3];  [1]
  1. Univ. of California, Riverside, CA (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); The Univ. of Tennessee, Knoxville, TN (United States)

Supercapacitors based on the electric double-layer mechanism use porous carbons or graphene as electrodes. To move beyond this paradigm, we propose boron supercapacitors to leverage two-dimensional (2D) boron sheets’ metallicity and low weight. Six 2D boron sheets from both previous theoretical design and experimental growth are chosen as test electrodes. By applying joint density functional theory (JDFT) to the electrode–electrolyte system, we examine how the 2D boron sheets charge up against applied potential. JDFT predicts that these 2D boron sheets exhibit specific capacitance on the order of 400 F/g, about four times that of graphene. As a result, our work suggests that 2D boron sheets are promising electrodes for supercapacitor applications.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Fluid Interface Reactions, Structures and Transport Center (FIRST)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1333670
Journal Information:
ACS Energy Letters, Vol. 1; ISSN 2380-8195
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 56 works
Citation information provided by
Web of Science

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Cited By (9)

Investigating the asymmetry in the EDL response of C 60 /graphene supercapacitors journal January 2019
Boron Element Nanowires Electrode for Supercapacitors journal March 2018
Computational Insights into Materials and Interfaces for Capacitive Energy Storage journal April 2017
Evaluating continuum solvation models for the electrode-electrolyte interface: Challenges and strategies for improvement journal February 2017
Hunting ionic liquids with large electrochemical potential windows journal November 2018
Tannic Acid-Assisted Fabrication of N/B-Codoped Hierarchical Carbon Nanofibers from Electrospun Zeolitic Imidazolate Frameworks as Free-Standing Electrodes for High-Performance Supercapacitors journal February 2019
Two dimensional boron nanosheets: synthesis, properties and applications journal January 2018
A first-principles roadmap and limits to design efficient supercapacitor electrode materials journal January 2019
Electronic Properties of Linear and Cyclic Boron Nanoribbons from Thermally-Assisted-Occupation Density Functional Theory journal August 2019