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• W2340254911 endingPage "7873" @default.
• W2340254911 startingPage "7861" @default.
• W2340254911 abstract "Driven by the search for faster and more efficient energy storage systems, research efforts toward electrochemical capacitors, also known as supercapacitors, have dramatically increased in recent years. Transition metal oxides have been shown to exhibit both high specific capacitance because of faradaic redox activity and long cyclic life due to their robust crystal structure. Cationic substitutions in ternary oxides have shown dramatic improvements over binary analogues, but the peak stoichiometry is often arrived at by trial and error. Transition metal oxides are also hampered by low electronic conductivity, requiring the use of conducting additives such as carbon black. In this work, we study the effect of cationic substitutions in Co3-xMnxO4 nanoparticles on electrochemical Li-ion energy storage in electrodes assembled without polymeric or conducting additives. We use a hot injection synthesis to produce colloidal Co–Mn nanoparticles with various ratios of Co/Mn. Through electrophoretic deposition (EPD), we assemble the metal nanoparticles onto current collectors and then oxidize them, forming electrochemical capacitors without carbon additives or polymeric binders (“additive-free” nanoparticle electrodes). We find that the highest-performing Co–Mn mixture has a 1:1 ratio of Co to Mn and shows an energy density of 26.6 Wh/kg with a specific capacitance of 173.6 F/g. This nanoparticle electrode composition delivers a high power density of 3.8 kW/kg at a 5 A/g constant current discharge. The energy density and power density delivered by the optimal mixture is ∼6× and ∼3× higher, respectively, than that of pure Co3O4 electrodes. The specific capacitance for the Co–Mn mixture is also ∼4× better than the pure Co3O4 nanoparticle supercapacitor. This 1:1 composition exceeds the performance of the Mn-rich composition in energy density (∼16×), power density (∼12×), and specific capacitance (∼20×). The optimum composition shows excellent stability with greater than 80% capacitance retention over 300 cycles. We attribute this peak-performance in the 1:1 equal mixture Co/Mn sample to an increased electronic conductivity for this stoichiometry and also find that this stoichiometry has both a high Co3+/Co2+ ratio and a high Mn3+/Mn2+ ratio, compared to other samples. This work could lead to advanced tailoring of electrochemical storage based on design principles of the interrelationship between oxidation state, stoichiometry, and redox charge storage." @default.
• W2340254911 created "2016-06-24" @default.
• W2340254911 creator A5008365499 @default.
• W2340254911 creator A5013115261 @default.
• W2340254911 creator A5018669921 @default.
• W2340254911 creator A5023722880 @default.
• W2340254911 creator A5028301400 @default.
• W2340254911 creator A5060164903 @default.
• W2340254911 creator A5088534839 @default.
• W2340254911 date "2015-11-23" @default.
• W2340254911 modified "2023-09-27" @default.
• W2340254911 title "Enhanced Supercapacitor Performance for Equal Co–Mn Stoichiometry in Colloidal Co_3-xMn_<i>x</i>O₄Nanoparticles, in Additive-Free Electrodes" @default.
• W2340254911 cites W10640993 @default.
• W2340254911 cites W1525197209 @default.
• W2340254911 cites W1963496313 @default.
• W2340254911 cites W1966242612 @default.
• W2340254911 cites W1967572225 @default.
• W2340254911 cites W1969810656 @default.
• W2340254911 cites W1970046331 @default.
• W2340254911 cites W1975008876 @default.
• W2340254911 cites W1976853687 @default.
• W2340254911 cites W1978327124 @default.
• W2340254911 cites W1981090962 @default.
• W2340254911 cites W1981845574 @default.
• W2340254911 cites W1982904970 @default.
• W2340254911 cites W1985537437 @default.
• W2340254911 cites W1986101426 @default.
• W2340254911 cites W1989835523 @default.
• W2340254911 cites W1992486962 @default.
• W2340254911 cites W1993363648 @default.
• W2340254911 cites W1996657059 @default.
• W2340254911 cites W1999807618 @default.
• W2340254911 cites W2004432407 @default.
• W2340254911 cites W2007626527 @default.
• W2340254911 cites W2009355400 @default.
• W2340254911 cites W2012324099 @default.
• W2340254911 cites W2012513954 @default.
• W2340254911 cites W2016360789 @default.
• W2340254911 cites W2021076295 @default.
• W2340254911 cites W2023345881 @default.
• W2340254911 cites W2025623820 @default.
• W2340254911 cites W2026609095 @default.
• W2340254911 cites W2030035481 @default.
• W2340254911 cites W2031004145 @default.
• W2340254911 cites W2037130148 @default.
• W2340254911 cites W2039720442 @default.
• W2340254911 cites W2041613302 @default.
• W2340254911 cites W2042425945 @default.
• W2340254911 cites W2045593685 @default.
• W2340254911 cites W2053328406 @default.
• W2340254911 cites W2054473654 @default.
• W2340254911 cites W2055541614 @default.
• W2340254911 cites W2056776496 @default.
• W2340254911 cites W2056967013 @default.
• W2340254911 cites W2057855199 @default.
• W2340254911 cites W2058022456 @default.
• W2340254911 cites W2058392682 @default.
• W2340254911 cites W2058755128 @default.
• W2340254911 cites W2062267311 @default.
• W2340254911 cites W2068999653 @default.
• W2340254911 cites W2069576584 @default.
• W2340254911 cites W2070411198 @default.
• W2340254911 cites W2075334067 @default.
• W2340254911 cites W2077193502 @default.
• W2340254911 cites W2077648515 @default.
• W2340254911 cites W2080942408 @default.
• W2340254911 cites W2084568307 @default.
• W2340254911 cites W2084719599 @default.
• W2340254911 cites W2084740090 @default.
• W2340254911 cites W2087411054 @default.
• W2340254911 cites W2087606978 @default.
• W2340254911 cites W2089448317 @default.
• W2340254911 cites W2091279318 @default.
• W2340254911 cites W2091965665 @default.
• W2340254911 cites W2093831851 @default.
• W2340254911 cites W2095167366 @default.
• W2340254911 cites W2095188447 @default.
• W2340254911 cites W2098171744 @default.
• W2340254911 cites W2098178733 @default.
• W2340254911 cites W2104348232 @default.
• W2340254911 cites W2109539790 @default.
• W2340254911 cites W2111913368 @default.
• W2340254911 cites W2115558155 @default.
• W2340254911 cites W2118855491 @default.
• W2340254911 cites W2120423685 @default.
• W2340254911 cites W2129345242 @default.
• W2340254911 cites W2138747819 @default.
• W2340254911 cites W2150073008 @default.
• W2340254911 cites W2159396315 @default.
• W2340254911 cites W2167584939 @default.
• W2340254911 cites W2317214384 @default.
• W2340254911 cites W2317311503 @default.
• W2340254911 cites W2324177007 @default.
• W2340254911 cites W2328325910 @default.
• W2340254911 cites W2331278850 @default.
• W2340254911 cites W2744286776 @default.
• W2340254911 cites W2889615184 @default.
• W2340254911 cites W2950677993 @default.

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