02408nas a2200265   4500008004100000022001400041245013100055210006900186260000900255300001400264490000600278520151800284653001401802653001801816653002601834653001201860653002101872100001801893700001701911700002001928700002101948700002101969700002101990856013102011       2020                        eng d  a2196-021600aElectrochemical evaluation of the stability and capacity of r-GO-wrapped copper antimony chalcogenide anode for Li-ion battery0 aElectrochemical evaluation of the stability and capacity of rGOw  cAUG   a3291-33000 v73 a<p>Poor cycling stability and capacity fade are primary concerns for next-generation anode materials for Li-ion batteries. In non-carbonaceous anode materials, alloying with Li leads to volume increase that affects practical applications, and increase in particle size, amorphization and reduced conductivity can all lead to a loss of performance. In this work, binary antimony sulfide (Sb2S3) and ternary copper antimony sulfide (CuSbS2) are synthesized by a convenient solvothermal process. These materials are used to study the Li-active/inactive concept, by incorporating Cu into Sb(2)S(3)forming CuSbS(2)wherein Cu is Li inactive whereas Sb is Li active. By direct comparison, we have shown that incorporating Cu into binary antimony sulfide (Sb2S3) resulting into ternary copper antimony sulfide (CuSbS2) addresses the problem of poor conductivity and capacity loss, as Cu provides conductivity leading to enhanced charge transfer and prevents Sb particle aggregation while charge-discharge by exhibiting spectator or diluent ion effect. The better performance of CuSbS(2)is associated with the better Li(+)ion diffusion in the CuSbS2(D=8.97x10(-15) cm(2) s(-1)) compared to Sb2S3(D=2.76x10(-15) cm(2) s(-1)) and lower series resistance of CuSbS2(R=4.70x10(5) omega) compared to Sb2S3(R=5.81x10(8) omega). We have also investigated the composite with the addition of rGO. The CuSbS2-rGO delivered a reversible capacity of 672 mAh g(-1)after 1000 cycles at 200 mA g(-1)which has shown best performance.</p>
10aBatteries10achalcogenides10aDiffusion coefficient10alithium10aTernary sulfides1 aYadav, Poonam1 aSharma, Neha1 aPatrike, Apurva1 aSabri, Ylias, M.1 aJones, Lathe, A.1 aShelke, Manjusha  uhttps://library.ncl.res.in/content/electrochemical-evaluation-stability-and-capacity-r-go-wrapped-copper-antimony-chalcogenide02222nas a2200205   4500008004100000022001400041245008700055210006900142260000900211300001400220490000600234520154700240100001801787700001601805700001701821700002101838700002101859700002101880856011501901       2022                        eng d  a2398-490200aSustainable composite of SnFe2O4 conversion alloying anode for lithium-ion storage0 aSustainable composite of SnFe2O4 conversion alloying anode for l  cAUG   a3806-38170 v63 a<p>
	The development of high-performance, low-cost electrodes using sustainable materials for Li-ion batteries is of vital importance in view of their increasing demand for use in electronics and electric vehicles, as we transition from non-renewable energy resources. Challenges associated with commercial graphite anode materials include relatively low capacity, the use of high-temperature synthesis, Li dendrite formation, and limited rate capability. In this study, we present a tin ferrite SnFe2O4 (SFO) conversion alloying material (CAM), and its synergistic composite with a scalable and low-cost waste-derived carbon (WDC), which was prepared by low-temperature pyrolysis of a waste material sustainably. The combination of SFO with the WDC in the composite boosts the conductivity, diffusion kinetics, stability, and reversibility, and accommodates volume expansion upon cycling. The first charge capacity obtained for WDC, SFO, and SFO-WDC is 595, 1269, and 1331 mA h g(-1), respectively at 100 mA g(-1) in a Li-ion half-cell. In a full cell fabricated with LFP, a stable capacity of 80 mA h g(-1) at 100 mA g(-1) could be obtained, and the corresponding energy density for the SFO-WDCIILFP full cell is 300 W h kg(-1). Kinetic studies revealed that capacitance-controlled charge storage is dominant so the capacity was higher in the composite. This composite system addresses both the low capacity issue of the carbon anode and stability issues of CAMs while being compatible for use with current Li-ion battery technology.</p>
1 aYadav, Poonam1 aParte, Golu1 aMalik, Wahid1 aSabri, Ylias, M.1 aJones, Lathe, A.1 aShelke, Manjusha  uhttps://library.ncl.res.in/content/sustainable-composite-snfe2o4-conversion-alloying-anode-lithium-ion-storage