Design strategies for organic carbonyl materials for energy storage: Small molecules, oligomers, polymers and supramolecular structures

An, So Young; Schon, Tyler B.; McAllister, Bryony T.; Seferos, Dwight S.

doi:10.1002/eom2.12055

Cited by 30 publications

(24 citation statements)

References 99 publications

(227 reference statements)

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“…[ 10,11 ] Among all organic electroactive anode materials, carbonyl (CO) group‐based compounds are being explored as the main candidates for LIBs owing to their high theoretical capacity, accessible active sites, easy synthesis, and availability from natural resources. [ 12–14 ] In particular, cyclohexanehexone (C 6 O 6 ), as a perfect structure composed entirely of six CO groups, can theoretically contribute the largest number of reactive sites and the highest specific capacity when used as an anode material. However, the research of C 6 O 6 as the anode material for LIBs has not been reported yet so far, which may be attributed to two key bottlenecks: the high solubility in the traditional carbonate‐based electrolytes and extremely low intrinsic electronic conductivity.…”

Section: Introductionmentioning

confidence: 99%

Eight‐Electron Redox Cyclohexanehexone Anode for High‐Rate High‐Capacity Lithium Storage

Lin

Zhang

et al. 2022

Advanced Energy Materials

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delivery capacity. [1,2] As an essential component of LIBs, anode materials have continuously been one of the hotspots in battery research to boost the energy density and lifespan. To date, inorganic electrode materials have been dominant in battery anodes. [3] However, inorganic anode materials, especially commercial graphite anodes, suffer from limited theoretical capacity (372 mAh g −1 ) and low rate capability due to conventional Li + intercalation/de-intercalation mechanisms, which inevitably restricts the development of high-energy and high-power density LIBs. [4] As an alternative, high-capacity alloying-type anode materials (e.g., Si, Ge, and Sn), especially silicon-carbon composite and silicon monoxide (SiO), have gained extensive attention and achieved initial applications in recent years. [5] However, these novel anode materials still face great challenges in terms of cycling durability and rate performance, mainly caused by drastic volume variation, severe mechanical pulverization, and cumulative growth of solid electrolyte interphase (SEI) layer upon cycling. [6,7] It should be noted that, in addition to the performance bottleneck, the high carbon emission caused by the high-energy synthesis route is also a serious issue that deserves more attention for inorganic anodes.Replacing inorganic anodes with organic electrode materials is an extremely attractive direction for future LIBs. Organic compounds offer significant merits, including structural diversity, processing compatibility, easy recycling/disposal, and low environmental footprint. [8,9] More importantly, organic anode materials endowed abundant redox-active sites may achieve high capacity, and even make it possible to explore the intriguing energy storage mechanisms towards electrochemical process (e.g., superlithiation). [10,11] Among all organic electroactive anode materials, carbonyl (CO) group-based compounds are being explored as the main candidates for LIBs owing to their high theoretical capacity, accessible active sites, easy synthesis, and availability from natural resources. [12][13][14] In particular, cyclohexanehexone (C 6 O 6 ), as a perfect structure composed entirely of six CO groups, can theoretically contribute the largest number of reactive sites and the highest specific capacity when used as an anode material. However, the research of C 6 O 6 as the anode material for LIBs has not been Replacing inorganic anodes with organic electrode materials is an attractive direction for future green Li-ion batteries (LIBs). Carbonyl compounds are being explored as leading anode candidates for organic LIBs. In particular, cyclohexanehexanone (C 6 O 6 ), as a perfect structure composed entirely of six CO groups, can theoretically contribute to the most reactive sites and the highest specific capacity, but has not been used as an anode material so far owing to its high solubility in carbonate-based electrolytes and extremely low electronic conductivity. Herein, C 6 O 6 is first revealed as an ultra-high capacity and high-rate anode ...

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Section: Introductionmentioning

confidence: 99%

Eight‐Electron Redox Cyclohexanehexone Anode for High‐Rate High‐Capacity Lithium Storage

Lin

Zhang

et al. 2022

Advanced Energy Materials

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“…Organic electrode materials are attractive candidates for electrochemical energy storage devices because they are naturally abundant, relatively inexpensive, produce minimal waste when recycled, have high specific capacities, and can exhibit long cycling stability 1–3 . Among the many redox‐active organic compounds, carbonyl compounds, in particular, have emerged as one of the most promising cathode materials for lithium‐ion batteries (LIB) 4,5 . Carbonyl compounds have tailorable structures and properties, and well‐known redox chemistry, which can enable high gravimetric energy density and high specific capacity.…”

Section: Introductionmentioning

confidence: 99%

Increasing ionic conductivity in polymer electrodes using oxanorbornene

McAllister

Grignon

et al. 2022

EcoMat

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Pendant polymer-based organic electrodes consisting of redox-active quinones are promising for the next generation of rechargeable batteries owing to their fast redox kinetics and the structural diversity of their design. Many commercially available norbornene monomers have been popular choices for preparing pendant polymer electrodes, since these monomers enable numerous synthetic routes for attaching redox-active pendant groups. However, these electrodes often suffer from sluggish lithium-ion mobility at both the electrode-electrolyte interface and within the bulk of the electrode because of their poor ionic conductivity. This can lead to low cycling stability and rate capability. In this study, we design and compare the performance of redoxactive poly(norbornene) and poly(oxanorbornene) pendant polymer electrodes.The additional oxygen in the repeat unit of poly(oxanorbornene) facilitates conduction of Li-ions, resulting in improved performance relative to their poly(norbornene) counterparts. Specifically, higher reversible capacities are achieved at high current densities and initial capacity is better retained during prolonged cycling tests. Unlike previous strategies to increase the ionic conductivity of polymer electrodes, our design involves minimal synthetic steps and only contributes to a small increase in additional redox-inactive mass, offering a versatile platform for high-performance organic electrode materials.

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“…Alkali metal batteries, especially lithium‐ion batteries have been widely applied as electrochemical energy storage devices attributed to their renewability, safety, and cyclic stability 6–8 . However, the energy density is restricted by low theoretical capacity of the traditional graphite anode 9,10 . Alloy anode materials (e.g., Si, Al, Sn, Zn, Bi, and Sb) which can be alloyed with reactive ions (e.g., Li + , Na + , Ca 2+ , or K + ) are considered to be promising anode for the next generation electrochemical energy storage devices due to their high theoretical capacity 11–15 .…”

Section: Introductionmentioning

confidence: 99%

Interface engineering towardhigh‐efficiencyalloy anode for next‐generation energy storage device

Wang

Tang

2021

EcoMat

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Alloy materials are considered as the promising anodes for next‐generation energy storage devices attributed to their high theoretical capacities and suitable working voltage. However, further commercialization is hindered by their remarkable volume change during cycling. The interface engineering has been proposed as an effective strategy to alleviate the volume expansion and improve the electrochemical performance of alloy anode. In this review, we discuss the failure mechanisms for alloy anode during charging/discharging processes. Then the mechanisms of interface engineering for alloy anode were proposed. Next, the interface engineering strategies for alloy anode such as artificial solid electrolyte interphase (SEI), structure control, and electrolyte composition design toward improved performance were summarized. Finally, the challenge and perspective of interface engineering of alloy anodes was discussed. This review may promote the development of alloy anode with improved electrochemical performance for practical renewable energy applications.image

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Design strategies for organic carbonyl materials for energy storage: Small molecules, oligomers, polymers and supramolecular structures

Cited by 30 publications

References 99 publications

Eight‐Electron Redox Cyclohexanehexone Anode for High‐Rate High‐Capacity Lithium Storage

Eight‐Electron Redox Cyclohexanehexone Anode for High‐Rate High‐Capacity Lithium Storage

Increasing ionic conductivity in polymer electrodes using oxanorbornene

Interface engineering towardhigh‐efficiencyalloy anode for next‐generation energy storage device

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