Latest Updates
-
Crossover mitigation strategies for redox-flow batteries
Reviewed causes and effects of crossover in different types of flow batteries and discussed strategies to reduce crossover and mitigate its impact on performance and durability. Read More
-
Studies with single-crystal electrodes can speed up design of new battery systems
This article was authored by Joseph E. Harmon and first published by Argonne National Laboratory. The diamonds and other crystals on view in science museum exhibits are a delight to the eye. What contributes to their sometimes dazzling geometric… Read More
-
Exploration of Biomass-derived Activated Carbons for Use in Vanadium Redox Flow Batteries
Low-cost, sustainable, and elementally diverse biomass feedstocks are converted into activated carbons using a hydrothermal processing method. The suitability of the carbonaceous microparticles as catalysts for vanadium redox flow batteries is contemplated. Read More
-
Polymer Chain Dynamics in Block Copolymer Electrolytes
The effect of salt concentration on polymer chain dynamics was quantitatively determined in the range of = 0.1-100 ns. This study reports the first measurements of tube diameters in block copolymers (with or without salt). Read More
-
Assessing the levelized cost of vanadium redox flow batteries with capacity fade and rebalancing
Levelized cost is an important assessment metric that should be considered in addition to capital cost when determining the potential value of battery systems. Here, we contemplate the vanadium redox flow battery (VRFB) whose symmetric chemistry and open architecture enable periodic system maintenance (e.g. rebalancing) which, in turn, adds economic value. Read More
-
2019 JCESR Impactful Publication Award Winners
The inaugural JCESR Publishing Awards for CY2019 were presented to postdocs and graduate students in recognition of their research publication efforts on April 9, 2020, at the first-ever virtual JCESR Full Program Meeting. The awards were initiated in September 2019 to celebrate “ideal” papers and… Read More
-
Comparing Physical and Electrochemical Properties of Different Weave Patterns for Carbon Cloth Electrodes in Redox Flow Batteries
In situ and ex situ characterization is combined with electrochemical analysis to elucidate mass transport and fluid dynamic relationships in carbon cloth electrodes with different weave patterns (plain, 8-satin harness, and 2×2 basket). Read More
-
A Message from JCESR Director George Crabtree
Despite the coronavirus challenges, JCESR continues to push the frontier of energy storage science as we telecommute from home, like much of the nation. We are turning our attention to computation, data analysis and paper writing which continues at a normal or higher pace, enabled… Read More
-
The critical role of configurational flexibility in facilitating reversible reactive metal deposition from borohydride solutions
Calcium borohydride in tetrahydrofuran is effective at reversible multivalent metal deposition where magnesium borohydride is not because the more polarizable Ca2+ cation enables greater coordination flexibility resulting in enhanced formation of CaBH4+ produced via multimer intermediates. Read More
-
Realistic ion dynamics through charge renormalization in nonaqueous electrolytes
We demonstrate that a computationally inexpensive modification non-polarizable force fields: charge renormalization, can harmonize computed and experimentally determined structure and dynamic attributes of nonaqueous electrolytes. It is sufficient to reproduce dynamics over range of 0-2 M salt while not sacrificing quality of structural properties. Read More
-
Low-temperature paddlewheel effect in glassy solid electrolytes
The high conductivity exhibited by glassy sulfide solid electrolytes is demonstrated to arise from the dynamic coupling of cation migration events with anion reorientations. Read More
-
Direct Characterization of Intermolecular Interactions in Redox-active Pyridinium-based Molecules
Our results show that charge transport in redox-active pyridinium-based molecules can be modulated by host-guest interactions and intermolecular electrostatic effects. Read More
-
You’re invited: Idaho National Laboratory and JCESR webinar on energy storage (March 18 )
Electrification is changing the energy landscape of the Mountain West region. While energy storage remains a key enabler to this transformation, infrastructure upgrade and supply chain development will be a key driver for this new economy. Join us on March 18 for a webinar where we’ll… Read More
-
Understanding Zn2+ Charge-Storage Mechanism in Vanadium-based Na+ Superionic Conductor for Zn Batteries
Elucidated the complex, multivalent charge-storage behavior of Na3V2(PO4)3 with Na+ and Zn2+ insertion. Read More
-
Combining SECM and AFM to Probe the Redoxmer-Electrode Interface
Dialkoxybenzene catholytes form electron transfer-limiting thin films preferentially on the basal plane of graphitic electrodes Read More
-
Direct Nano-Synthesis Methods Notably Benefit Mg-Battery Cathode Performance
A novel Mg cathode material – CuCo2S4 – was identified as a conversion material where direct nano-synthesis was required to provide the best electrochemical performance and deliver 350 mAh·g-1 at 60 °C, a capacity nearly double that of ball-milled material with similar dimensions. Read More
-
Quantifying Capacity Losses due to Solid Electrolyte Interphase Evolution
We quantified the capacity loss originating in solid electrolyte interphase (SEI) growth during each cycle and extracted the proportionality constant for SEI growth following a parabolic growth law. This continuous SEI growth contributes to the increasing overpotential, leading to capacity fading at a given constant current cycling rate. Read More
-
Quantifying Environmental Effects on the Solution and Solid-State Stability of a Phenothiazine Radical Cation
This study underscores the need to match the stability testing conditions for a phenothiazine electroactive derivative for RFB application. For analysis of stability, RRDE voltammetry can be used to rapidly screen molecules over seconds or minutes, providing stability trends that are similar to results that require several weeks to obtain using UV−vis spectroscopy. Read More
-
On Lifetime and Cost of Redox-Active Organics for Aqueous Flow Batteries
In this viewpoint, we recommend methodology for (1) testing aqueous organic flow batteries to better understand the fade mechanisms and failure modes, and for (2) techno-economic assessment of these batteries that incorporates the costs associated with electrolyte decay and replacement to articulate a feasible design space for the community to target. Read More
-
Computational investigation of chalcogenide spinel conductors for all-solid-state Mg batteries
(a) MgLn2X4 spinel structure with Mg (blue), lanthanoid Ln (orange), and chalcogenide X (light green). (b) Mg2+ migration energy, Emig, and the difference in octahedral and tetrahedral energies, Eoct - Etet. Stability with respect to competing phases, Ehull, for (c) each sulphide and (d) selenide. Read More