PMID- 34647677
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20211217
IS  - 1613-6829 (Electronic)
IS  - 1613-6810 (Linking)
VI  - 17
IP  - 50
DP  - 2021 Dec
TI  - Flexible, Self-Supported Anode for Organic Batteries with a Matched Hierarchical 
      Current Collector System for Boosted Current Density.
PG  - e2103885
LID - 10.1002/smll.202103885 [doi]
AB  - The inherent flexibility of redox-active organic polymers and carbon-based 
      fillers, combined with flexible current collectors (CCs) is ideal for the 
      fabrication of flexible batteries. Herein, a one-step electrophoretic deposition 
      of polyviologen (PV)/graphene-oxide (GO) aqueous composites onto a flexible mesh 
      of 60 microm thick wires, 100 microm apart, is described. Notably, during 
      electrodeposition, GO is transformed into conductive reduced GO (rGO), and 
      nanoscopic pores are formed by self-assembly allowing charge/discharge of the 
      redox sites over dozens of micrometers. Typically, electrodeposition of PV alone 
      on a flat CC (FCC) is limited by its electrically insulating structure to  approximately 0.15 
      mAh cm(-2) , but the presence of rGO allows thicker active layers without loss in 
      (dis-)charging kinetics and reaching areal capacities of  approximately 2 mAh cm(-2) . 
      Remarkably, when the FCC is replaced by a mesh, the deposition of significantly 
      more anode materials ( approximately 5 mAh cm(-2) ) is possible, while the (dis-)charging 
      kinetics is considerably improved. It exhibits high capacity retention at an 
      ultrafast rate of 100 C (<3%) and excellent bending stabilities. This represents 
      the first combination of a microscopic-CC (mesh wires) with a 
      molecular-electronic and -ionic conductor (rGO with its pores), i.e., a 
      hierarchical-CC system with maximized polymer thickness and minimized wire 
      thickness. The stacking of such modified grids paves the road to further increase 
      the areal capacity.
CI  - (c) 2021 The Authors. Small published by Wiley-VCH GmbH.
FAU - Beladi-Mousavi, Seyyed Mohsen
AU  - Beladi-Mousavi SM
AUID- ORCID: 0000-0003-2861-0348
AD  - Institute of Chemistry of New Materials, Center of Physics and Chemistry of New 
      Materials, University of Osnabruck, Barbarastr. 7, D-49069, Osnabruck, Germany.
FAU - Klein, Jonas
AU  - Klein J
AD  - Institute of Chemistry of New Materials, Center of Physics and Chemistry of New 
      Materials, University of Osnabruck, Barbarastr. 7, D-49069, Osnabruck, Germany.
FAU - Ciobanu, Marius
AU  - Ciobanu M
AD  - Institute of Chemistry of New Materials, Center of Physics and Chemistry of New 
      Materials, University of Osnabruck, Barbarastr. 7, D-49069, Osnabruck, Germany.
FAU - Sadaf, Shamaila
AU  - Sadaf S
AD  - Institute of Chemistry of New Materials, Center of Physics and Chemistry of New 
      Materials, University of Osnabruck, Barbarastr. 7, D-49069, Osnabruck, Germany.
FAU - Mahmood, Arsalan Mado
AU  - Mahmood AM
AD  - Institute of Chemistry of New Materials, Center of Physics and Chemistry of New 
      Materials, University of Osnabruck, Barbarastr. 7, D-49069, Osnabruck, Germany.
FAU - Walder, Lorenz
AU  - Walder L
AUID- ORCID: 0000-0002-5497-034X
AD  - Institute of Chemistry of New Materials, Center of Physics and Chemistry of New 
      Materials, University of Osnabruck, Barbarastr. 7, D-49069, Osnabruck, Germany.
LA  - eng
PT  - Journal Article
DEP - 20211014
PL  - Germany
TA  - Small
JT  - Small (Weinheim an der Bergstrasse, Germany)
JID - 101235338
SB  - IM
OTO - NOTNLM
OT  - electrodeposition
OT  - flexible batteries
OT  - hierarchical current collector
OT  - organic anodes
OT  - organic batteries
OT  - reduced graphene oxide
OT  - viologens
EDAT- 2021/10/15 06:00
MHDA- 2021/10/15 06:01
CRDT- 2021/10/14 08:46
PHST- 2021/08/31 00:00 [revised]
PHST- 2021/07/04 00:00 [received]
PHST- 2021/10/15 06:00 [pubmed]
PHST- 2021/10/15 06:01 [medline]
PHST- 2021/10/14 08:46 [entrez]
AID - 10.1002/smll.202103885 [doi]
PST - ppublish
SO  - Small. 2021 Dec;17(50):e2103885. doi: 10.1002/smll.202103885. Epub 2021 Oct 14.