Patrick Gerlach

• Post-Doc at Nantes Université

In this work, the layered double hydroxide (LDH) Mg2Al(OH)6 was intercalated with redox active ferrocene carboxylate anions in order to implement charge storage capability to the interlayer spaces of the LDH structure. Two sets of anions, namely mono‐ and dicarboxylic ferrocene, were intercalated to produce two different active materials: MgAl‐FcMo...

Layered Double Hydroxides (LDHs) are a versatile class of 2D materials, which consist of layered di- and trivalent metal cation hydroxides with intercalated anions (1). They are used in many applications including energy storage electrodes, water purification or drug delivery (2, 3). In this new study, Anthraquinone-2-sulfonate (AQS) intercalated i...

A layered double hydroxide (LDH) compound LDH ([Mg 2 Al(OH) 6 ] ⁺ x 2 H 2 O) intercalated with a redox active organic anion, Anthraquinone-2-sulfonate (AQS), has been envisioned as an electrode material for high power aqueous based battery. The purpose is to use this interlayer redox active molecule for enhancement of the specific capacity at the L...

By selecting two electroactive species immobilized in a layered double hydroxide backbone (LDH) host, one able to act as a positive electrode material and the other as a negative one, it was possible to match their capacity to design an innovative energy storage device. Each electrode material is based on electroactive species, riboflavin phosphate...

In this study we report on the characterization and use of the anionic metal-organic framework (MOF) JUMP-1, [(Me2NH2)2[Co3(ntb)2(bdc)]] n , alongside with its alkali-metal ion-exchanged analogs JUMP-1(Li) and JUMP-1(Na), as electrode materials for lithium and sodium batteries. Composite electrodes containing these anionic-MOFs were prepared and te...

In this work, two new redox-active ionic liquids, one based on 2,2,6,6-tetramethylpiperidine-N-oxide and the other based on 4,4′-bipyridine, are synthesized and characterized. A ferrocene-based redox-active ionic liquid is used for referencing the results. All ionic liquids are formed via salt-metathesis from halogenate to bis(trifluoromethylsulfon...

In this work we report a systematic study about the influence of the charging current density and the rest time on the self-discharge of poly(2,2,6,6-tetramethylpiperidinyloxy methacrylate) (PTMA) based electrodes in two model electrolytes, namely 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr14TFSI, IL) and 1M Pyr14TFSI in p...

Organic polymer‐based batteries represent a promising alternative to present‐day metal‐based systems and a valuable step toward printable and customizable energy storage devices. However, most scientific work is focussed on the development of new redox‐active organic materials, while straightforward manufacturing and sustainable materials and produ...

In this study we systematically investigated the impact of aprotic and protic ionic liquids on the electrochemical behavior of poly(2,2,6,6-tetramethylpiperidinyloxy methacrylate) (PTMA) based electrodes. We showed that the use of aprotic ILs based on the FSI⁻ anion enables the realization of electrodes able to display high capacity, good capacity...

Electrochemical energy storage devices based on organic materials such as polymers and organic molecules (PORMs) are nowadays regarded with increasing attention. The interest on these systems is related to their promising electrochemical performance, their low cost and their high sustainability. In the last years, several works focused on the devel...

Electrolyte chemistry is critical for any energy‐storage device. Low‐cost and sustainable rechargeable batteries based on organic redox‐active materials are of great interest to tackle resource and performance limitations of current batteries with metal‐based active materials. Organic active materials can be used not only as solid electrodes in the...

Organic radical polymers (ORPs) combine a favourable redox chemistry with favourable kinetics [1]. Due to these properties, and thanks to their affordable price, the interest on the use of these polymers for the realization of metal-free batteries constantly increased in the last years [2]. Several types of polymers have been proposed and, among th...