Carbon based catalysts for highly efficient HER In-situ Trace Co,N co-doped Anchoring and space-confinement effects carbon based catalyst for HER to form ultrafine Ru nanoclusters for efficient hydrogen generation In-situ construction metal-organic .Anchoring and space-confinement effects to form framework precursor for Co,N co- ultrafine Ru nanoclusters catalysts doped carbon-based catalyst .Exhibiting outstanding HER performance with 19mV overpotential in alkaline solution Co@NG-800 in acid NG-800 in acid CoNG-800 in alkaline NG-800 in alkaline -10 15 -20 25 -0.8 -0.6 -0.4 -0.20.0 0.2 0.4 0.6 0.8 KOH 2 Overpotential (V vs.RHE) P℃ Electrochimica Acta,262(2018) 48-56 Ru np 一种钌纳米金属电催化剂及制备方法， 0201 50 0.1 -0.2 0.0 .1 Potential (V vs.RHE] Potential (V vs.RHE) 201810127062.7 Journal of Materials Chemistry A,2018,6,13859
H2SO4 KOH C N Ru Carbon based catalysts for highly efficient HER 2.10 Electrochimica Acta, 262 (2018) 48-56 一种钌纳米金属电催化剂及制备方法， 201810127062.7 Journal of Materials Chemistry A, 2018, 6, 13859 In-situ Trace Co, N co-doped carbon based catalyst for HER Anchoring and space-confinement effects to form ultrafine Ru nanoclusters for efficient hydrogen generation ⚫Anchoring and space-confinement effects to form ultrafine Ru nanoclusters catalysts ⚫Exhibiting outstanding HER performance with 19mV overpotential in alkaline solution ⚫ In-situ construction metal-organic framework precursor for Co, N codoped carbon-based catalyst
Carbon based catalysts for efficient HER,ORR and OER Investigating the effect of Ru doping and CNT encapsulating 1800rpm in N ..CM on oxygen catalysis performance 400n DFT calculations reveal that doping Ru into Co and CoO 53n lead to more charge transfers from Ru to the carbon atoms 2500pm adjacent to the doped N atom —PtG The assembled Zn-air battery based on the catalysts display R.co..CNT -Ruceo,gCoN-CNT 0.7 superior discharge and charge performance yoi cd ing DCDA 250℃for2hlna动r 0●● 204.20 obential [V vs.白 Potertial (V vs.RHE) 888 RuCoOx Nano-particlo ORR and OER catalytic performance Co,Ru salts RuCoOxCoiN-CNT (a) b). (e) (a)CouaN-CNT CouREN-CNT 0,+H.D+e H -CN Reaction Pathway Under review
Carbon based catalysts for efficient HER, ORR and OER d c a b ORR and OER catalytic performance Under review ◼ Investigating the effect of Ru doping and CNT encapsulating on oxygen catalysis performance ◼ DFT calculations reveal that doping Ru into Co and CoOx lead to more charge transfers from Ru to the carbon atoms adjacent to the doped N atom ◼ The assembled Zn-air battery based on the catalysts display superior discharge and charge performance 2.11
Bimetallic Carbide catalyst in HER ■ Low-cost nonnoble-metal carbide based electrocatalysts(Ni,Co)aC with high performance and excellent stability. ■ Ultrathin nanosheet structure can expose sufficient active sites and promote electrolyte infiltration. ■ Theoretical calculations reveal the synergistic effect significantly can enhance catalytic activities. -1D05 d-hand cemer a-.16 eV PD0s- PDOS-p PDOS-s Ocu d-bend center at1.00 eV -PDOS- (Ni.Co),C, PDOS Ni,C 403 H'+e H 1/2H: -0.03 0.5MHS0 -0.06 0.09 1MO用 -0s PDos-d -PDOS-p P5- 0.12 /吾毫 0.15 50 -1086420246810 Time(h) Under submission Energy (eV)
Bimetallic Carbide catalyst in HER ◼ Low-cost nonnoble-metal carbide based electrocatalysts (Ni,Co)3C with high performance and excellent stability. ◼ Ultrathin nanosheet structure can expose sufficient active sites and promote electrolyte infiltration. ◼ Theoretical calculations reveal the synergistic effect significantly can enhance catalytic activities. Under submission 2.12
Metal Oxide Composite Separator with Low Li lon Diffusion Barrier in Li-S Battery Metal Oxide Composite (NiCo,O4)Separator has a low lithium ion diffusion barrier,which acts as the catalytic role to accelerate a series of redox reactions of polysulfide. ■ Metal Oxide Composite(NiCo,O4)Separator greatly avoid the deposition of Li,S on the surface of lithium metal,thus reducing the consumption of lithium metal and electrolyte,and significantly improving the stability of the Li-S batteries. Pa小sand NiCo,04● Repulsion uiS● )● rGO e rGO e rGO PP PP Large energy barriers Low energy barrier Carbon 0.293eV Liion NiCo,O PP Cd:3 mA cm" 0.103 eV in,0rG0hrrG0r 10 10 200 250 Cycle mumber Under submission
Metal Oxide Composite Separator with Low Li Ion Diffusion Barrier in Li-S Battery ◼ Metal Oxide Composite (NiCo2O4) Separator has a low lithium ion diffusion barrier, which acts as the catalytic role to accelerate a series of redox reactions of polysulfide. ◼ Metal Oxide Composite (NiCo2O4) Separator greatly avoid the deposition of Li2 S on the surface of lithium metal, thus reducing the consumption of lithium metal and electrolyte, and significantly improving the stability of the Li-S batteries. Under submission 2.13
Loofah-derived carbon as anode for K ion battery Biomass derived pseudo-graphite material demonstrate good K+storage capability. ■ A dual-ion storage mechanism is explored. (a) (b) 400 100 100 mAeg" 80 4300 21 。Charge 60 -Cycler 200 100 mAeg -Cycle2 。Discharge 40 -Cycle1o 100 -Cycle200 20 -Cycle400 0 0. 100 200300 400 100200300 400 Cycling Number Capacity(mAheg) Li+ Near-surface storage K+ Near-surface storage (0-0.17 V)Layer insertion (0-0.56V) Layer Insertion(slight) 20.17V0 20.560 （●+●=225mAhg) (●+●=150mAhg) X.Niu*,Electrochimica Acta,306 (2019) 446:
Loofah-derived carbon as anode for K ion battery X. Niu*, Electrochimica Acta, 306 (2019) 446； ◼ Biomass derived pseudo-graphite material demonstrate good K+ storage capability. ◼ A dual-ion storage mechanism is explored. 2.14