Regulating Uniform Li Plating/Stripping via Dual‐Conductive Metal‐Organic Frameworks for High‐Rate Lithium Metal Batteries

Abstract

Lithium metal anodes show immense scope for application in high-energy electronics and electric vehicles. Unfortunately, lithium dendrite growth and volume change leading to short lifespan and safety issues severely limit the feasibility of lithium metal batteries. A rational design of metal-organic framework (MOF)-modified Li metal anode with optimized Li plating/ stripping behavior via one-step carbonization of ZIF-67 is proposed. Experimental and theoretical simulation results reveal that carbonized MOFs with uniformly dispersed Co nanoparticles in N-graphene (Co@N-G) exhibit an electronic/ionic dual-conductivity and significantly improved affinity with Li, and so serve as an ideal host for dendrite-free lithium deposition, consequently leading to uniform lithium plating/stripping during cycling. As a result, the anode delivers highly stable cyclic performance with high coulombic efficiency (CE) at ultrahigh current densities (CE = 91.5% after 130 cycles at 10 mA cm −2 , and CE = 90.4% after 80 cycles at 15 mA cm −2 ). Moreover, the practical applicability and functionality of such anodes are demonstrated through assembly of Li-Co@N-G/NCM full batteries exhibiting a long cycle life of 100 cycles with a high capacity retention of 92% at 1 C.

Metal–organic framework based bifunctional oxygen electrocatalysts for rechargeable zinc–air batteries: current progress and prospects

“…The main limitations of pristine MOFs for electrocatalysis are their low conductivities and poor stability. Although highly conductive conjugated systems and twisted quadrilateral congurations have been developed to improve the conductivities of MOFs, which pave new ways for applications of pristine MOFs, [170][171][172][173] they are still in the exploration stage and it is very meaningful and important to construct more conductive and stable MOFs.…”

Hierarchically Nanoporous 3D Assembly Composed of Functionalized Onion‐Like Graphitic Carbon Nanospheres for Anode‐Minimized Li Metal Batteries

“…[ 13–15 ] Therefore, recent studies revisiting LMAs have focused on mitigating dendritic metal growth and volume expansion through both electrolyte engineering and the state‐of‐the‐art design of catalytic electrode materials using well‐known chemistry. [ 10–23 ]…”

“…[13][14][15] Therefore, recent studies revisiting LMAs have focused on mitigating dendritic metal growth and volume expansion through both electrolyte engineering and the state-of-the-art design of catalytic electrode materials using wellknown chemistry. [10][11][12][13][14][15][16][17][18][19][20][21][22][23] Nanoporous carbon materials have attracted considerable attention as a capacitive/pseudocapacitive electrode because of their superior materials properties, such as high specific surface area, good electrical conductivity, and tunable surface properties, as well as nanoscale effects. [24][25][26][27] Along with the characteristics of the unique material, detailed effects on nanopores were recently revealed.…”

Designing Ceramic/Polymer Composite as Highly Ionic Conductive Solid‐State Electrolytes

“…Adding ceramic electrolyte to polymer electrolyte can prevent the growth of lithium dendrites from two aspects. One is the improvement of the interface contact mentioned above, and another one is that ceramic electrolyte can reduce the current density at the interface area between the electrolyte and the electrodes [118] . It will be discussed in detail in the following sections.…”