Preface to Special Issue on Novel Semiconductor-biochemical Sensors

Insights into the cycling stability of manganese-based zinc-ion batteries: from energy storage mechanisms to capacity fluctuation and optimization strategies

“…The search for new stable manganese-based cathodes, such as manganese-based layered double hydroxide (LDH) and high entropy oxides (HEOs), presents a promising avenue. 201 For example, HEOs (Co 0.6 -Ni 0.6 Fe 0.6 Mn 0.6 Cu 0.6 O 4 ) with long-range disorders and a xed lattice structure can effectively alleviate the structural collapse induced by the strong electrostatic force between Zn 2+ , thereby achieving remarkable long-term stability. 202 Additionally, a trinary LDH with hydrogen vacancies (Ni 3 Mn 0.7 Fe 0.3 -LDH) has been reported as a novel cathode material for ZIBs, exhibiting a reversible high capacity of up to 328 mA h g −1 and demonstrating excellent cycling stability over 500 cycles with a capacity retention of 85%.…”

MXene‐Induced Flexible, Water‐Retention, Semi‐Interpenetrating Network Hydrogel for Ultra‐Stable Strain Sensors with Real‐Time Gesture Recognition

“…As emerging two‐dimensional transition metal carbons and/or nitrides, [ 9 , 10 ] MXenes have been widely used to improve hydrogel performance. [ 7 , 11 ] However, most existing studies have solely used MXenes as conductive fillers without fully exploiting their hydrophilicity, high specific surface area, multiple active sites, and abundant surface functional groups. [ 11 , 12 ] Few studies have been published using MXenes as cross‐linking agents, [ 13 ] however, only single network hydrogels were constructed, resulting in a relatively single performance and low tunability compared with semi‐IPN (semi‐interpenetrating network) or IPN hydrogel.…”

“…[ 7 , 11 ] However, most existing studies have solely used MXenes as conductive fillers without fully exploiting their hydrophilicity, high specific surface area, multiple active sites, and abundant surface functional groups. [ 11 , 12 ] Few studies have been published using MXenes as cross‐linking agents, [ 13 ] however, only single network hydrogels were constructed, resulting in a relatively single performance and low tunability compared with semi‐IPN (semi‐interpenetrating network) or IPN hydrogel. [ 14 ] Therefore, constructing a semi‐IPN or IPN hydrogel that fully utilizes the characteristics of MXenes is a feasible solution for preparing C‐hydrogels with excellent performance.…”

A Non‐Flammable and Flexible Aluminum Derived Lithium‐Ion Storage Device with a Wide Temperature Range of Operation

“…As an alternative, aluminum‐ion batteries (AIB) are gaining attention as the most promising energy‐storage system owing to their low cost, high safety, and high theoretical energy density. [ 1 ] Aluminum ions have higher electronegativity and lower reactivity than other metals such as lithium, sodium, magnesium, potassium, or zinc. [ 2 ] Further, aluminum produces a dense film of aluminum oxide on its surface when exposed to air, thus preventing further reactions.…”