02995nas a2200241   4500008004100000022001400041245015500055210006900210260007100279300001400350490000600364520208400370653001502454653002402469653001602493653001402509653001602523653001502539100002102554700002502575700002402600856012902624       2015                        eng d  a1944-824400a3D polyaniline porous layer anchored pillared graphene sheets: enhanced interface joined with high conductivity for better charge storage applications0 a3D polyaniline porous layer anchored pillared graphene sheets en  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcAPR  a7661-76690 v73 a<p>Here, we report synthesis of a 3-dimensional (3D) porous polyaniline (PANI) anchored on pillared graphene (G-PANI-PA) as an efficient charge storage material for supercapacitor applications. Benzoic acid (BA) anchored graphene, having spatially separated graphene layers (G-Bz-COOH), was used as a structure controlling support whereas 3D PANI growth has been achieved by a simple chemical oxidation of aniline in the presence of phytic acid (PA). The BA groups on G-Bz-COOH play a critical role in preventing the restacking of graphene to achieve a high surface area of 472 m(2)/g compared to reduced graphene oxide (RGO, 290 m(2)/g). The carboxylic acid (-COOH) group controls the rate of polymerization to achieve a compact polymer structure with micropores whereas the chelating nature of PA plays a crucial role to achieve the 3D growth pattern of PANI. This type of controlled interplay helps G-PANI-PA to achieve a high conductivity of 3.74 S/cm all the while maintaining a high surface area of 330 m(2)/g compared to PANI-PA (0.4 S/cm and 60 m(2)/g). G-PANI-PA thus conceives the characteristics required for facile charge mobility during fast charge-discharge cycles, which results in a high specific capacitance of 652 F/g for the composite. Owing to the high surface area along with high conductivity, G-PANI-PA displays a stable specific capacitance of 547 F/g even with a high mass loading of 3 mg/cm(2), an enhanced areal capacitance of 1.52 F/cm(2), and a volumetric capacitance of 122 F/cm(3). The reduced charge-transfer resistance (RCT) of 0.67 O displayed by G-PANI-PA compared to pure PANI (0.79 O) stands out as valid evidence of the improved charge mobility achieved by the system by growing the 3D PANI layer along the spatially separated layers of the graphene sheets. The low RCT helps the system to display capacitance retention as high as 65% even under a high current dragging condition of 10 A/g. High charge/discharge rates and good cycling stability are the other highlights of the supercapacitor system derived from this composite material.</p>10adurability10aionic accessibility10aphytic acid10apillaring10apolyaniline10arestacking1 aSekar, Pandiaraj1 aAnothumakkool, Bihag1 aKurungot, Sreekumar  uhttps://library.ncl.res.in/content/3d-polyaniline-porous-layer-anchored-pillared-graphene-sheets-enhanced-interface-joined-002729nas a2200229   4500008004100000022001400041245014700055210006900202260000800271490000700279520182100286653002502107653004402132653001602176653004502192653003602237100001902273700004002292700001702332700002402349856012602373       2024                        eng d  a1613-681000aPhytic acid customized hydrogel polymer electrolyte and prussian blue analogue cathode material for rechargeable zinc metal hydrogel batteries0 aPhytic acid customized hydrogel polymer electrolyte and prussian  cAUG0 v203 a<p>
	Zinc anode deterioration in aqueous electrolytes, and Zn dendrite growth is a major concern in the operation of aqueous rechargeable Zn metal batteries (AZMBs). To tackle this, the replacement of aqueous electrolytes with a zinc hydrogel polymer electrolyte (ZHPE) is presented in this study. This method involves structural modifications of the ZHPE by phytic acid through an ultraviolet (UV) light-induced photopolymerization process. The high membrane flexibility, high ionic conductivity (0.085 S cm-1), improved zinc corrosion overpotential, and enhanced electrochemical stability value of approximate to 2.3 V versus Zn|Zn2+ show the great potential of ZHPE as an ideal gel electrolyte for rechargeable zinc metal hydrogel batteries (ZMHBs). This is the first time that the dominating effect of chelation of phytic acid with M2+ center over H-bonding with water is described to tune the gel electrolyte properties for battery applications. The ZHPE shows ultra-high stability over 360 h with a capacity of 0.50 mAh cm-2 with dendrite-free plating/stripping in Zn||Zn symmetric cell. The fabrication of the ZMHB with a high-voltage zinc hexacyanoferrate (ZHF) cathode shows a high-average voltage of approximate to 1.6 V and a comparable capacity output of 63 mAh g-1 at 0.10 A g-1 of the current rate validating the potential application of ZHPE. A novel phytic acid (PA) modulated zinc hydrogel polymer electrolyte (ZHPE) as an efficient electrolyte and separator for rechargeable Zn-metal hydrogel batteries (ZMHB) is designed. The zincophilic, and hydrogen bonding characteristics of ZHPE help in regulating uniform dendrite-free Zn-deposition over the Zn anode surface. ZHPE in combination with the developed high-voltage zinc hexacyanoferrate (ZHF) cathode performs as an efficient ZMHB. image</p>
10ahigh voltage cathode10ahigh-conducting gel polymer electrolyte10aphytic acid10arechargeable Zn-metal hydrogel batteries10aZn hydrogel polymer electrolyte1 aDilwale, Swati1 aPuthiyaveetil, Priyanka, Pandinhare1 aBabu, Athira1 aKurungot, Sreekumar  uhttps://library.ncl.res.in/content/phytic-acid-customized-hydrogel-polymer-electrolyte-and-prussian-blue-analogue-cathode