Prolonged lifespan of initial-anode-free lithium-metal battery by pre-lithiation in Li-rich Li₂Ni_0.5Mn_1.5O₄spinel cathode

Abstract

Anode-free lithium metal batteries (AF-LMBs) can deliver the maximum energy density. However, achieving AF-LMBs with long lifespan remains challenging because of the poor reversibility of Li+ plating/stripping on anode. Here,...

Enhancing the cycle-life of initial-anode-free lithium-metal batteries by pre-lithiation in Mn-based Li-rich spinel cathodes

“…S2†). 5,25,30 However, the ICE and ACE of the Li||LMO half-cell (Fig. S3†) upon cycling with different numbers reached superior values, about 96.3% and 99%, respectively, indicating that the poor cycling stability of the Cu||LMO AF-LMB results from the Cu anode.…”

“…23,24 The over-lithiated cathode can release additional Li-ions during the first charge, which are stored in unoccupied crystallographic sites, to offset the active lithium consumed to form the SEI and the lithium loss in the subsequent cycles. 25–28 Notably, the over-lithiated cathode strategy does not introduce inactive ingredients, making it more convenient for practical applications than additives.…”

Injecting Excess Na into a P2-Type Layered Oxide Cathode to Achieve Presodiation in a Na-Ion Full Cell

“…Contrary to that, the edge position reverted to its original value while NLFMO recharged to 3.45 V. In addition, the extended X-ray absorption fine structure (EXAFS) derived from the hard XAS results offers more comprehensive insights into the local covalent environment of Fe−O and Fe−TM bonds and the variations in the electronic structure of TM at the corresponding states (Figure S3). 29 By fitting the Fe−O and Fe−TM paths, we acquired a measurable factor known as the Debye−Waller factor (σ 2 ) that was utilized to evaluate the level of structural disorder in the vicinity of the target atom in relation to its neighboring atoms (Figure 2f). Compared with that of the pristine state, the σ 2 values (both Fe−O and Fe−TM) presented a certain increase during charging from the OCV to 1.5 V, indicating that the additional insertion of sodium deepened the degree of structural disorder to some extent.…”

Recognition and Application of Catalysis in Secondary Rechargeable Batteries

“…The increasing demand for sustainable energy storage has triggered the interest of researchers around the world. − Nowadays, merging the concept of catalysis into battery studies has become more and more important, whether in scientific investigations or industrial technologies. − Catalysis, an old term, was first proposed by Jöns Jakob Berzelius from Sweden . In 1836, he accidentally discovered that platinum powder can accelerate the oxidation of alcohol with air.…”