02500nas a2200253   4500008004100000022001400041245013300055210006900188260000800257300001100265490000700276520159400283653002801877653002401905653003201929653002301961653000801984100002601992700002302018700002502041700002702066700002502093856012802118       2022                        eng d  a2352-152X00aFlexible ultracapacitor device fabricated with an organic electrode material- naphthalene diimide nitrile/reduced graphene oxide0 aFlexible ultracapacitor device fabricated with an organic electr  cDEC  a1060360 v563 a<p>
	In this work, we have demonstrated a high-performance flexible supercapacitor electrode based on reduced graphene oxide (rGO) and naphthalene diimide nitrile (NDI-CN) composite. The rGO/NDI-CN composite was prepared by a simple approach. This composite was well characterized using various techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) etc. Besides, the pi -pi stacking of NDI-CN on rGO surface was confirmed using UV-vis and FTIR techniques. As fabricated rGO/NDI-CN composite was examined as an electrode material for the supercapacitor applications. The rGO/NDI-CN electrode has delivered an excellent specific capacitance (C-sp) of 336 F g(-1) at 0.5 A g(-1)current density. The fabricated supercapacitor (SC) displays robustness with 80 % capacitance retention over 10,000 cycles at higher current density of 10 A g(-1). To further explore the real-world application of electrode materials, the corresponding flexible supercapacitor was designed and examined. The flexible device exhibited an energy density of 9.54 mu Wh cm(-2) at a power density of 0.3 mWcm(-2). These results confirmed that the rGO/NDI-CN electrode material has good potential as an energy storage device. Furthermore, the facile construction and fabrication of flexible device displayed operation of LED when fully charged. The assembled flexible supercapacitor device could be bent and twisted, signifying the potential to be used in practical applications in various high-performance electrochemical devices.</p>
10aflexible supercapacitor10aNaphthalene diimide10aOrganic molecule electrodes10api -pi interaction10arGO1 aDeshmukh, Ashvini, B.1 aBiradar, Madan, R.1 aPawar, Meenakshi, D.1 aBhosale, Sidhanath, V.1 aShelke, Manjusha, V.  uhttps://library.ncl.res.in/content/flexible-ultracapacitor-device-fabricated-organic-electrode-material-naphthalene-diimide02330nas a2200241   4500008004100000022001400041245010300055210006900158260000800227300001100235490000700246520150900253653001701762653002801779653002401807653001401831653002601845653002601871100002501897700002001922700002101942856012501963       2026                        eng d  a1861-472800aFacile synthesis of fluoride-free mxene nanosheets as an efficient anode for lithium-ion capacitor0 aFacile synthesis of fluoridefree mxene nanosheets as an efficien  cJAN  ae705620 v213 a<p>
	MXenes are a promising class of two-dimensional (2D) nanomaterials known for their exceptional metallic conductivity and adjustable surface chemistry. However, the current state-of-the-art synthesis methods rely on the chemical etching of MAX phase (e.g., Ti3AlC2) with HF or fluoride-based compounds, leading to fluorine-terminated MXenes. These MXenes suffer from poor stability in ambient conditions, restricting their applications, particularly in lithium-ion-based batteries and capacitors (LIBs and LICs). In this study, we present a two-step method to produce fluorine-free MXene, addressing the stability issues of MXene in aqueous dispersions and relatively improved performance in LICs. Specifically, an efficient etching process employing hydroiodic acid (HI) with vinegar is used for the selective removal of the A layer from the MAX phase, resulting in F-free exfoliated MXenes (HVM). The HVM shows an outstanding electrical conductivity of 388 S cm(-1), maintaining high stability in aqueous dispersions over two weeks. HVM as electrode shows significantly enhanced Li+ ion storage capabilities, delivering a discharge capacity of 295 mAh g(-1) over 500 cycles at 1 A g(-1), substantially outperforming MXenes derived from F-based etching approaches. Furthermore, the HI-vinegar etching mechanism introduces unique surface functionalities that provide HVM superior cycling stability and rate capability, enabling more stable, high-performance MXene-based energy storage devices.</p>
10a2D materials10aElectrical conductivity10afluoride-free MXene10aHVM anode10aLithium-ion capacitor10alithium-ion diffusion1 aPawar, Meenakshi, D.1 aShinde, Dhanraj1 aShelke, Manjusha  uhttps://library.ncl.res.in/content/facile-synthesis-fluoride-free-mxene-nanosheets-efficient-anode-lithium-ion-capacitor