Surface Phosphorus-Induced CoO Coupling to Monolithic Carbon for Efficient Air Electrode of Quasi-Solid-State Zn-Air Batteries.
Surface Phosphorus-Induced CoO Coupling to Monolithic Carbon for Efficient Air Electrode of Quasi-Solid-State Zn-Air Batteries.
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表面磷诱导 CoO 与单片碳耦合，用于准固态锌空气电池的高效空气电极
DOI：
10.1002/advs.202101314
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发表时间：
2021-10
期刊：
影响因子：
--
通讯作者：
Li B
中科院分区：
文献类型：
--
作者：
Liu H;Liu Y;Mehdi S;Wu X;Liu T;Zhou B;Zhang P;Jiang J;Li B
锌-空气电池（ZAB）空气电极开发面临的一个挑战是活性位点嵌入碳中，这需要粉末和膜之间的裂缝和混合，并导致制造和使用过程中的低能量效率。本文提出了一种表面磷化-单片化的策略，将CoO纳米颗粒嵌入到桐木碳板（P-CoO@PWC）中作为单片电极。P-CoO@PWC-2由于保留了天然传输通道，有利于构建三相界面结构，实现高效传质和高电导率。该电极对氧还原反应（ORR）和析氧反应（OER）均表现出显著的催化活性，具有较小的过电位间隙（EOER-EORR = 0.68 V）。密度泛函理论计算表明，P在P-CoO@PWC-2表面的引入调整了电子结构，促进了水的解离和氧的活化，从而诱导了催化活性。用于准固态或含水ZAB的单片P-CoO@PWC-2电极具有优异的比功率、低充放电电压间隙（0.83 V）和长期循环稳定性（超过700次循环）。这项工作是将丰富的生物质转化为高价值能源相关工程产品的新途径。通过表面磷化-单片策略由木材制成的碳电极在锌空气电池中表现出出色的双功能活性。表面P原子促进水的解离和氧的活化，从而诱导有效的催化活性。
One challenge facing the development of air electrodes for Zn–air batteries (ZABs) is the embedment of active sites into carbon, which requires cracks and blends between powder and membrane and results in low energy efficiency during manufacturing and utilization. Herein, a surface phosphorization‐monolithic strategy is proposed to embed CoO nanoparticles into paulownia carbon plate (P–CoO@PWC) as monolithic electrodes. Benefiting from the retention of natural transport channels, P–CoO@PWC‐2 is conducive to the construction of three‐phase interface structure for efficient mass transfer and high electrical conductivity. The electrode exhibits remarkable catalytic activities for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) with a small overpotential gap (E OER − E ORR = 0.68 V). Density functional theory calculations reveal that the incorporation of P on P–CoO@PWC‐2 surface adjusts the electronic structure to promote the dissociation of water and the activation of oxygen, thus inducing catalytic activity. The monolithic P–CoO@PWC‐2 electrode for quasi‐solid‐state or aqueous ZABs has excellent specific power, low charge–discharge voltage gap (0.83 V), and long‐term cycling stability (over 700 cycles). This work serves as a new avenue for transforming abundant biomass into high‐value energy‐related engineering products. Carbon electrodes manufactured from wood by a surface phosphorization‐monolithic strategy exhibit outstanding bifunctional activities in Zn–air battery. The surface P atoms promote the dissociation of water and the activation of oxygen, thus inducing efficient catalytic activity.
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影响因子：
41.2
作者：
Chattot R;Le Bacq O;Beermann V;Kühl S;Herranz J;Henning S;Kühn L;Asset T;Guétaz L;Renou G;Drnec J;Bordet P;Pasturel A;Eychmüller A;Schmidt TJ;Strasser P;Dubau L;Maillard F
通讯作者：
Maillard F
细菌纤维素衍生的氮掺杂碳纳米纤维气凝胶：一种用于锌空气电池的高效无金属氧还原电催化剂
影响因子：
17.6
作者：
Liang, Hai-Wei;Wu, Zhen-Yu;Yu, Shu-Hong
通讯作者：
Yu, Shu-Hong
影响因子：
13.3
作者：
Ahn, Sung Hoon;Manthiram, Arumugam
通讯作者：
Manthiram, Arumugam
金属间 PtBi 纳米板可增强氧还原催化作用，且比化学燃料具有更高的耐受性
影响因子：
15.1
作者：
Feng, Yonggang;Shao, Qi;Huang, Xiaoqing
通讯作者：
Huang, Xiaoqing
影响因子：
8.4
作者：
Liu, Yanyan;Sun, Kang;Jiang, Jianchun
通讯作者：
Jiang, Jianchun