Zheng Qizheng

Xiamen University | XMU · Department of Chemistry

More and more basic practical application scenarios have been gradually ignored/disregarded, in fundamental research on rechargeable batteries, e.g. assessing cycle life under various depths‐of‐discharge (DODs). Herein, although benefit from the additional energy density introduced by anionic redox, we critically revealed that lithium‐rich layered...

More and more basic practical application scenarios have been gradually ignored/disregarded, in fundamental research on rechargeable batteries, e.g. assessing cycle life under various depths‐of‐discharge (DODs). Herein, although benefit from the additional energy density introduced by anionic redox, we critically revealed that lithium‐rich layered...

In addressing the global climate crisis, the energy storage performance of Li‐ion batteries (LIBs) under extreme conditions, particularly for high‐energy‐density Li‐rich layered oxide (LRLO) cathode, is of the essence. Despite numerous researches into the mechanisms and optimization of LRLO cathodes under ideal moderate environment, there is a dear...

Anode‐free sodium metal batteries (AFSMBs) are regarded as the “ceiling” for current sodium‐based batteries. However, their practical application is hindered by the unstable electrolyte and interfacial chemistry at the high‐voltage cathode and anode‐free side, especially under extreme temperature conditions. Here, an advanced electrolyte design str...

Layered oxide cathodes encounter structural challenges during cycling, prompting the exploration of an ingenious heterostructure strategy, which incorporates stable components into the layered structure as strain regulators to enhance materials cycle stability. Despite considerable research efforts, identifying suitable, convenient, and cost-effect...

As the preferred anode material for sodium‐ion batteries, hard carbon (HC) confronts significant obstacles in providing a long and dominant low‐voltage plateau to boost the output energy density of full batteries. The critical challenge lies in precisely enhancing the local graphitization degree to minimize Na⁺ ad‐/chemisorption, while effectively...

High‐nickel layered cathodes exhibit great promise in advancing high‐energy‐density batteries owing to their significant advantages in high energy capacity and low cost, but they suffer severe structural and interfacial deterioration during cycling, resulting in safety risk and reduced cycle life. Herein, drawing inspiration from the low melting po...

Nanoconfined catalysts enhance stabilization of reaction intermediates, facilitate electron transfer, and safeguard active centers, leading to superior electrocatalytic activity, particularly in CO 2 reduction reactions (CO 2 RR). Despite their effectiveness, crafting nanoconfined catalysts is challenging due to unclear formation mechanisms. In thi...

Raising the charging cut‐off voltage of layered oxide cathodes can improve their energy density. However, it inevitably introduces instabilities regarding both bulk structure and surface/interface. Herein, exploiting the unique characteristics of high‐valance Nb ⁵⁺ element, we achieved a synchronous surface‐to‐bulk modified LiCoO 2 featuring Li 3 N...

The high‐voltage induced undesirable surface passivation bilayer (cathode/electrolyte interface and cation‐densified surface phase) of LiCoO2 inevitably leads to battery degradation. Herein, a continual/uniform enamel‐like olivine layer on LiCoO2 surface is fabricated by employing a high‐speed mechanical fusion method . The enamel‐like layer suppre...

Push-pull π-conjugated molecules are one of the paradigms of second order nonlinear optical (NLO) materials and have been extensively explored. However, high-performance second order NLO materials with optimum electron donor...

Benefiting from high energy density (2,600 Wh kg⁻¹) and low cost, lithium–sulfur (Li–S) batteries are considered promising candidates for advanced energy-storage systems1–4. Despite tremendous efforts in suppressing the long-standing shuttle effect of lithium polysulfides5–7, understanding of the interfacial reactions of lithium polysulfides at the...

Abstract Silicon (Si)‐based solid‐state batteries (Si‐SSBs) are attracting tremendous attention because of their high energy density and unprecedented safety, making them become promising candidates for next‐generation energy storage systems. Nevertheless, the commercialization of Si‐SSBs is significantly impeded by enormous challenges including la...

In sodium‐ion batteries (SIBs), the low initial coulombic efficiency (ICE) is commonly induced by irreversible phase conversion and difficult desodiation, especially on transition metal compounds (TMCs). Yet the underlying physicochemical mechanism of poor reaction reversibility is still a controversial issue. Herein, by using in situ transmission...

Cathode electrolyte interphase (CEI) layers derived from electrolyte oxidative decomposition can passivate the cathode surface and prevent its direct contact with electrolyte. The inorganics-dominated inner solid electrolyte layer (SEL) and organics-rich outer quasi-solid-electrolyte layer (qSEL) constitute the CEI layer, and both merge at the junc...

The development of electrocatalysts capable of efficient reduction of nitrate (NO3−) to ammonia (NH3) is drawing increasing interest for the sake of low carbon emission and environmental protection. Herein, we present a CuCo bimetallic catalyst able to imitate the bifunctional nature of copper-type nitrite reductase, which could easily remove NO2−...

Li metal batteries (LMBs) reveal great application prospect in next-generation energy storage because of their high energy density and low electrochemical potential, especially when paired with elemental sulfur and oxygen cathodes. Complex interfacial reactions have long been a big concern because of the elusive formation/dissolution of Li metal an...

The role of step sites on nanocatalysts in the electrocatalytic dechlorination reaction (ECDR) was studied using 3 Pd nanocatalysts with different densities of step sites, which decreased in the order of: tetrahexahedral Pd{310} nanocrystals (THH Pd{310} NCs) > commercial Pd nanoparticles (Pd black) > cubic Pd{100} NCs. The two well-defined Pd NCs...

The role of step sites on nanocatalysts in electrocatalytic dechlorination reaction (ECDR) is studied by using 3 Pd nanocatalysts with different density of step sites, which is decreasing on tetrahexahedral Pd{310} nanocrystals (THH Pd{310} NCs) > commercial Pd nanoparticles (Pd black) > cubic Pd{100} NCs. The two well-defined Pd NCs are served as...

Considerable theoretical and experimental efforts have been made on the nonclassical crystallization theory for a better understanding of the crystallization process to improve nanomaterial design and preparation. It is commonly suggested that nucleation often occurs through a multiple-step mechanism with an amorphous dense liquid phase (DLP) inter...

A “superaerophobic” NiCo bimetallic phosphides electrocatalyst has been fabricated by employing bimetal-organic frameworks as self-sacrificing templates. Only an overpotential of 205 mV can drive the HER current density to 800...